Energy saving rate calculation method of heating and ventilation system and related device

Abstract

The invention discloses an energy-saving rate determination method of a heating and ventilation system and a related device, and relates to the technical field of data analysis, and the method comprises the steps: firstly determining the energy-saving rate of an energy consumption side of the heating and ventilation system through the actual temperature of an indoor space where the heating and ventilation system is located; then determining the working condition corresponding to the maximum temperature of each day and the number of days corresponding to each working condition, and calculating the energy-saving rate of each host, the energy-saving rate of each freezing pump and the energy-saving rate of each cooling pump according to the information of each host, the information of each freezing pump and the information of each cooling pump under each working condition and the number of days corresponding to each working condition; determining the energy-saving rate of the energy supply side of the heating and ventilation system; and finally, the energy consumption side energy-saving rate of the heating and ventilation system and the energy supply side energy-saving rate of the heating and ventilation system are integrated. According to the scheme, multiple factors of the energy consumption side and the function side of the heating and ventilation system are comprehensively considered, so that the calculation result is more accurate, and the energy-saving effect of the heating and ventilation system can be reflected more truly.

Description

Technical Field

[0001] The present application relates to the technical field of data analysis, and in particular to a method for calculating the energy saving rate of a heating and ventilation system and a related device. Background Art

[0002] Energy shortage and environmental pollution have become severe challenges facing the world, prompting all walks of life to constantly seek new methods and technologies for energy conservation and emission reduction. In this context, HVAC systems are an indispensable key equipment for indoor environmental regulation, and their energy saving rate is of great significance for reducing the overall energy consumption of buildings and alleviating environmental pressure.

[0003] At present, the energy saving rate of the HVAC system is generally calculated directly based on the overall energy consumption data of the HVAC system during a period of operation and the standard energy consumption data.

[0004] However, the HVAC system is a complex whole, including multiple components. It is less accurate to determine the energy saving rate of the HVAC system only through the overall energy consumption data of the HVAC system. Summary of the invention

[0005] In view of the above problems, this application provides a method and related device for calculating the energy saving rate of a HVAC system in order to improve the accuracy of calculating the energy saving rate of the HVAC system. The specific scheme is as follows:

[0006] In a first aspect, the present application provides a method for calculating energy saving rate of a heating and ventilation system, wherein the energy supply side equipment of the heating and ventilation system includes at least one host, at least one refrigeration pump and at least one cooling pump, and the method includes:

[0007] Obtaining the actual temperature of the indoor space where the HVAC system is located and multiple daily maximum temperatures of the outdoor space corresponding to the HVAC system;

[0008] Based on the actual temperature, the preset temperature and the preset energy saving rate, the energy consumption side energy saving rate of the HVAC system is calculated;

[0009] Determine the working conditions corresponding to the daily maximum temperatures and the number of days corresponding to the working conditions, the number of days corresponding to the working conditions being the number of the daily maximum temperatures corresponding to the working conditions;

[0010] Based on the obtained rated cooling capacity of each host under each of the operating conditions, the functional relationship between the load rate and the energy efficiency ratio of each host, the rated energy efficiency ratio of each host, the total number of hosts, the actual total cooling capacity of the hosts, and the number of days corresponding to each of the operating conditions, the host energy saving rate is calculated;

[0011] The energy saving rate of the freezing pump is calculated based on the actual frequency of each of the freezing pumps, the functional relationship between the frequency and power of each of the freezing pumps, the functional relationship between the frequency and flow rate of each of the freezing pumps, the functional relationship between the flow rate and frequency of each of the freezing pumps, the main pipe return water temperature of the freezing pump, the main pipe supply water temperature of the freezing pump and the total number of the freezing pumps;

[0012] The energy saving rate of the cooling pump is calculated based on the actual frequency of each cooling pump, the functional relationship between the frequency and power of each cooling pump, the functional relationship between the frequency and flow rate of each cooling pump, the functional relationship between the flow rate and frequency of each cooling pump, the main pipe return water temperature of the cooling pump, the main pipe supply water temperature of the cooling pump and the total number of the cooling pumps;

[0013] The energy saving rate of the HVAC system is calculated based on the energy saving rate of the main engine, the energy saving rate of the refrigeration pump, the energy saving rate of the cooling pump and the energy saving rate of the energy consumption side of the HVAC system.

[0014] In a possible implementation, the operating conditions include a first operating condition, a second operating condition, and a third operating condition, and determining the operating conditions corresponding to the maximum temperatures of each day includes:

[0015] For each of the daily maximum temperatures, determining whether the daily maximum temperature is greater than a first preset temperature value;

[0016] If the daily maximum temperature is not greater than the first preset temperature value, determining that the operating condition corresponding to the daily maximum temperature is the first operating condition;

[0017] If the daily maximum temperature is greater than the first preset temperature value, determining whether the daily maximum temperature is greater than a second preset temperature value, the second preset temperature value being greater than the first preset temperature value;

[0018] If the daily maximum temperature is not greater than the second preset temperature value, determining that the operating condition corresponding to the daily maximum temperature is the second operating condition;

[0019] If the daily maximum temperature is greater than the second preset temperature value, it is determined that the operating condition corresponding to the daily maximum temperature is the third operating condition.

[0020] In a possible implementation, the energy saving rate of the host is calculated based on the obtained rated cooling capacity of each host under each of the operating conditions, the functional relationship between the load rate and the energy efficiency ratio of each host, the rated energy efficiency ratio of each host, the total number of the hosts, the actual total cooling capacity of the hosts, and the number of days corresponding to each of the operating conditions, including:

[0021] Based on the obtained rated cooling capacity of each of the hosts under each of the working conditions, the functional relationship between the load rate and the energy efficiency ratio of each of the hosts, the rated energy efficiency ratio of each of the hosts, the total number of the hosts and the actual total cooling capacity of the hosts, the total power of the hosts before energy saving under each of the working conditions is calculated;

[0022] Using a device combination optimization algorithm to select at least one target host under each of the working conditions from the hosts under each of the working conditions;

[0023] Based on the obtained rated cooling capacity of each of the target hosts under each of the working conditions, the functional relationship between the load rate and the energy efficiency ratio of each of the target hosts, the rated energy efficiency ratio of each of the target hosts, the total number of the target hosts and the actual total cooling capacity of the target hosts, the total power of the target hosts after energy saving under each of the working conditions is calculated;

[0024] The energy saving rate of the host is calculated based on the total power of the host before energy saving under each of the working conditions, the total power of the target host after energy saving under each of the working conditions, and the number of days corresponding to each of the working conditions.

[0025] In a possible implementation, the calculating of the total power before energy saving of the host under each of the working conditions based on the obtained rated cooling capacity of each of the hosts under each of the working conditions, the functional relationship between the load rate and the energy efficiency ratio of each of the hosts, the rated energy efficiency ratio of each of the hosts, the total number of the hosts and the actual total cooling capacity of the hosts includes:

[0026] Based on the obtained rated cooling capacity of each of the main machines under each of the working conditions, the total number of the main machines and the actual total cooling capacity of the main machines, the actual cooling capacity of each of the main machines under each of the working conditions is calculated;

[0027] Based on the obtained rated cooling capacity of each of the main machines under each of the working conditions, the functional relationship between the load rate and the energy efficiency ratio of each of the main machines, the rated energy efficiency ratio of each of the main machines, the total number of the main machines, and the actual cooling capacity of each of the main machines under each of the working conditions, the total power of the main machines before energy saving under each of the working conditions is calculated.

[0028] In a possible implementation, the energy saving rate of the freezing pump is calculated based on the acquired actual frequency of each freezing pump, the functional relationship between the frequency and power of each freezing pump, the functional relationship between the frequency and flow of each freezing pump, the functional relationship between the flow and frequency of each freezing pump, the main pipe return water temperature of the freezing pump, the main pipe supply water temperature of the freezing pump and the total number of the freezing pumps, including:

[0029] Based on the acquired actual frequency of each of the refrigeration pumps, the functional relationship between the frequency and power of each of the refrigeration pumps, and the total number of the refrigeration pumps, the total power of the refrigeration pumps before energy saving is calculated;

[0030] Based on the actual frequency of each of the refrigeration pumps, the functional relationship between the frequency and power of each of the refrigeration pumps, the functional relationship between the frequency and flow rate of each of the refrigeration pumps, the functional relationship between the flow rate and frequency of each of the refrigeration pumps, the main pipe return water temperature of the refrigeration pumps, the main pipe supply water temperature of the refrigeration pumps and the total number of the refrigeration pumps, the total power of the refrigeration pump after energy saving is calculated;

[0031] The energy saving rate of the refrigeration pump is calculated based on the total power of the refrigeration pump before energy saving and the total power of the refrigeration pump after energy saving.

[0032] In a possible implementation, the energy saving rate of the HVAC system is calculated based on the energy saving rate of the host, the energy saving rate of the refrigeration pump, the energy saving rate of the cooling pump, and the energy saving rate of the energy consumption side of the HVAC system, including:

[0033] Obtain the energy consumption ratio of the host, the energy consumption ratio of the refrigeration pump and the energy consumption ratio of the cooling pump;

[0034] The energy-supply-side energy-saving rate of the HVAC system is calculated based on the main engine energy consumption proportion, the main engine energy-saving rate, the refrigeration pump energy consumption proportion, the refrigeration pump energy-saving rate, the cooling pump energy consumption proportion and the cooling pump energy-saving rate;

[0035] The energy saving rate of the HVAC system is calculated based on the energy saving rate on the energy consumption side of the HVAC system and the energy saving rate on the energy supply side of the HVAC system.

[0036] A second aspect of the present application provides an energy saving rate calculation device for a HVAC system, comprising:

[0037] An acquisition unit, used to acquire the actual temperature of the indoor space where the HVAC system is located and multiple daily maximum temperatures of the outdoor space corresponding to the HVAC system;

[0038] A first calculation unit, configured to calculate an energy-consuming side energy-saving rate of the HVAC system based on the actual temperature, the preset temperature and the preset energy-saving rate;

[0039] A determination unit, used to determine the working conditions corresponding to the daily maximum temperatures and the number of days corresponding to the working conditions, wherein the number of days corresponding to the working conditions is the number of the daily maximum temperatures corresponding to the working conditions;

[0040] A second calculation unit is used to calculate the host energy saving rate based on the rated cooling capacity of each host under each of the operating conditions, the functional relationship between the load rate and the energy efficiency ratio of each host, the rated energy efficiency ratio of each host, the total number of the hosts, the actual total cooling capacity of the hosts, and the number of days corresponding to each of the operating conditions;

[0041] A third calculation unit is used to calculate the energy saving rate of the freezing pump based on the acquired actual frequency of each of the freezing pumps, the functional relationship between the frequency and power of each of the freezing pumps, the functional relationship between the frequency and flow rate of each of the freezing pumps, the functional relationship between the flow rate and frequency of each of the freezing pumps, the main pipe return water temperature of the freezing pump, the main pipe supply water temperature of the freezing pump and the total number of the freezing pumps;

[0042] a fourth calculation unit, for calculating the energy saving rate of the cooling pump based on the acquired actual frequency of each cooling pump, the functional relationship between the frequency and the power of each cooling pump, the functional relationship between the frequency and the flow rate of each cooling pump, the functional relationship between the flow rate and the frequency of each cooling pump, the main pipe return water temperature of the cooling pump, the main pipe supply water temperature of the cooling pump and the total number of the cooling pumps;

[0043] The fifth calculation unit is used to calculate the energy saving rate of the HVAC system based on the energy saving rate of the main engine, the energy saving rate of the refrigeration pump, the energy saving rate of the cooling pump and the energy saving rate of the energy consumption side of the HVAC system.

[0044] The third aspect of the present application provides a computer program product, including computer-readable instructions. When the computer-readable instructions are executed on an electronic device, the electronic device implements the energy-saving rate calculation method of the HVAC system according to the first aspect or any implementation method of the first aspect.

[0045] A fourth aspect of the present application provides an electronic device, comprising at least one processor and a memory connected to the processor, wherein:

[0046] The memory is used to store computer programs;

[0047] The processor is used to execute the computer program so that the electronic device can implement the energy saving rate calculation method of the HVAC system according to the first aspect or any implementation method of the first aspect.

[0048] A fifth aspect of the present application provides a computer storage medium, which carries one or more computer programs. When the one or more computer programs are executed by an electronic device, the electronic device can implement the method for calculating the energy saving rate of a HVAC system according to the first aspect or any implementation of the first aspect.

[0049] By means of the above technical scheme, the present application provides a method for calculating the energy saving rate of a HVAC system and a related device. The present application first determines the energy saving rate of the HVAC system on the energy consumption side by the actual temperature of the indoor space where the HVAC system is located; then determines the working conditions corresponding to the highest temperature of each day and the number of days corresponding to each working condition, and then calculates the energy saving rate of the host, the energy saving rate of the refrigeration pump and the energy saving rate of the cooling pump by obtaining the information of each host under each working condition, the information of each refrigeration pump, the information of each cooling pump, and the number of days corresponding to each working condition, and then determines the energy saving rate of the HVAC system on the energy supply side; finally, the energy saving rate of the HVAC system on the energy consumption side and the energy saving rate of the HVAC system on the energy supply side are integrated to obtain the overall energy saving rate of the HVAC system. This scheme comprehensively considers multiple factors on the energy consumption side and the functional side of the HVAC system, and especially performs detailed energy saving rate calculations for the host, refrigeration pump and cooling pump, so that the calculation results are more accurate and can more truly reflect the energy saving effect of the HVAC system. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] The above and other features, advantages and aspects of the embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. Throughout the accompanying drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and the originals and elements are not necessarily drawn to scale.

[0051] Figure 1 A flow chart of a method for calculating energy saving rate of a HVAC system provided in an embodiment of the present application;

[0052] Figure 2 A process diagram of a method for determining the working conditions corresponding to the maximum temperature of each day provided in an embodiment of the present application;

[0053] Figure 3 A schematic diagram of the structure of a device for calculating energy saving rate of a HVAC system provided in an embodiment of the present application;

[0054] Figure 4 A schematic diagram of the hardware structure of an energy-saving rate calculation device for a HVAC system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0055] The following describes the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. The terms used in the implementation method section of the present application are only used to explain the specific embodiments of the present application, and are not intended to limit the present application.

[0056] The embodiments of the present application are described below in conjunction with the accompanying drawings. Those skilled in the art will appreciate that, with the development of technology and the emergence of new scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0057] The terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and need not be used to describe a specific order or sequential order. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances, which is only to describe the distinction mode adopted by the objects of the same attributes when describing in the embodiments of the present application. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, so that the process, method, system, product or equipment comprising a series of units need not be limited to those units, but may include other units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0058] In order to improve the accuracy of calculating the energy saving rate of a HVAC system, the present application provides a method for calculating the energy saving rate of a HVAC system. The following is a further detailed description of the method for calculating the energy saving rate of a HVAC system provided in the present application in conjunction with the accompanying drawings and specific implementation methods.

[0059] Please see attached Figure 1 , Figure 1 A flow chart of a method for calculating the energy saving rate of a heating and ventilation system provided in an embodiment of the present application. The energy supply side equipment of the heating and ventilation system includes at least one host, at least one refrigeration pump and at least one cooling pump. The method may include the following steps:

[0060] This solution not only considers the energy consumption of the equipment on the energy supply side, but also evaluates the energy consumption on the energy consumption side through parameters such as indoor temperature. Specifically, seasonal differences can be considered, and evaluations can be conducted based on the operating characteristics of different seasons, such as summer, winter, and transition season. The equipment operated in different seasons is different. For example, in summer, the host, refrigeration pump, cooling pump and other equipment need to be operated to meet the cooling demand; in winter, only the host and refrigeration pump need to be operated to meet the heating demand; the temperature changes greatly in the transition season, and the host, refrigeration pump, and cooling pump need to be operated in some time periods, and only the host and refrigeration pump need to be operated in some time periods.

[0061] Taking summer as an example, the main unit is the core equipment of the HVAC system, and its energy consumption accounts for a large proportion of the total energy consumption, which is the focus of energy-saving assessment; the refrigeration pump is used to circulate chilled water, and its energy consumption is also relatively high, so energy-saving assessment is required. The cooling pump is used to circulate cooling water in the summer and other seasons that require cooling, and it also needs energy-saving assessment.

[0062] Step S101: obtaining the actual temperature of the indoor space where the HVAC system is located and multiple daily maximum temperatures of the outdoor space corresponding to the HVAC system.

[0063] It should be noted that the actual temperature refers to the actual temperature of the indoor space where the HVAC system is located, which is usually obtained through temperature sensors and other equipment. Multiple daily maximum temperatures refer to the maximum daily temperature of the outdoor space corresponding to the HVAC system over a period of time (such as a week, a month, etc.), which helps to understand the impact of the outdoor environment on the indoor temperature and the energy consumption of the HVAC system.

[0064] Step S102: Based on the actual temperature, the preset temperature and the preset energy saving rate, the energy saving rate of the HVAC system is calculated.

[0065] It should be noted that the preset temperature refers to the ideal indoor temperature set after comprehensive consideration of factors such as comfort, energy consumption, etc. The preset energy saving rate is the energy saving rate corresponding to each degree increase in temperature estimated by experts based on project experience. It reflects the experts' preliminary judgment on the energy saving potential of the project, but it needs to be verified and evaluated through actual operation data.

[0066] In this application, the energy saving rate of the HVAC system mainly considers the supply and demand matching at the end, that is, the difference between the actual indoor temperature and the set temperature. For details, please refer to the following formula:

[0067]

[0068] Among them, T 预设 is the preset temperature; T 实际 is the actual temperature; η is the preset energy saving rate; energy saving rate 用能侧 It is the energy saving rate of the HVAC system on the energy consumption side.

[0069] Step S103: Determine the working conditions corresponding to the maximum temperature of each day and the number of days corresponding to each working condition, where the number of days corresponding to the working condition is the number of daily maximum temperatures corresponding to the working condition.

[0070] It should be noted that the operating conditions include the first operating condition, the second operating condition and the third operating condition. The first operating condition (low operating condition) is when the outdoor temperature is low, resulting in a low load on the HVAC system; the second operating condition (general operating condition) is when the outdoor temperature is moderate and the HVAC system load is at a medium level; the third operating condition (high operating condition) is when the outdoor temperature is high and the HVAC system needs to run at full capacity to meet the indoor comfort requirements.

[0071] In this application, the working condition corresponding to each day's maximum temperature can be determined by counting the working condition interval in which each day's maximum temperature falls, and then the number of daily maximum temperatures corresponding to the working condition is used as the number of days corresponding to each working condition. Using the above statistical results, the proportion of days the system is running under different working conditions can be estimated, which is helpful for subsequent energy consumption analysis and energy saving rate calculation.

[0072] Step S104: Calculate the host energy saving rate based on the rated cooling capacity of each host under each operating condition, the functional relationship between the load rate and the energy efficiency ratio of each host, the rated energy efficiency ratio of each host, the total number of hosts, the actual total cooling capacity of the hosts, and the number of days corresponding to each operating condition.

[0073] In the present application, the total power before energy saving of the host under each operating condition is first calculated based on the rated cooling capacity of each host under each operating condition, the functional relationship between the load rate and the energy efficiency ratio of each host, the rated energy efficiency ratio of each host, the total number of hosts and the actual total cooling capacity of the hosts.

[0074] It should be noted that the total number of hosts refers to the number of cooling (or heating) hosts running in the heating system. The actual total cooling capacity of the hosts refers to the common cooling capacity of all hosts running in the heating system. The rated cooling capacity of each host refers to the maximum cooling capacity that the host can provide under standard conditions. The rated energy efficiency ratio refers to the energy efficiency ratio of the host under standard conditions, usually expressed as COP, that is, the ratio of cooling capacity to power consumption. The load rate refers to the ratio of the actual cooling capacity of the host to the rated cooling capacity; the energy efficiency ratio refers to the ratio of the actual energy efficiency ratio of the host to the rated energy efficiency ratio under different load rates; through experimental data or information provided by the manufacturer, a functional relationship between the load rate and the energy efficiency ratio can be established, which is usually a curve or table. The energy saving rate can intuitively reflect the energy saving effect of the host after adopting energy-saving technologies or measures.

[0075] The actual cooling capacity of each host under each working condition is calculated based on the rated cooling capacity of each host under each working condition, the total number of hosts and the actual total cooling capacity of the hosts. The total power before energy saving of the host under each working condition is calculated based on the rated cooling capacity of each host under each working condition, the functional relationship between the load rate and the energy efficiency ratio of each host, the rated energy efficiency ratio of each host, the total number of hosts and the actual cooling capacity of each host under each working condition.

[0076] Taking low working condition as an example, based on the rated cooling capacity of each host under low working condition, the total number of hosts and the actual total cooling capacity of the hosts, the actual cooling capacity of each host under low working condition is calculated. For details, please refer to the following formula:

[0077]

[0078] Where A is the total number of hosts under low operating conditions; RP a Indicates the rated cooling capacity of each host under low working conditions; L all is the actual total cooling capacity of the host under low working conditions; L a It is the actual cooling capacity of each host under low working conditions.

[0079] Based on the rated cooling capacity of each host under low working conditions, the functional relationship between the load rate and energy efficiency ratio of each host, the rated energy efficiency ratio of each host, the total number of hosts, and the actual cooling capacity of each host under low working conditions, the total power of the host before energy saving under low working conditions is calculated. For details, refer to the following formula:

[0080]

[0081] Where A is the total number of hosts under low operating conditions; RP a is the rated cooling capacity of each host under low working conditions; L a is the actual cooling capacity of each host under low working conditions; COP a is the rated energy efficiency ratio of each host under low working conditions; f COP-负荷率 is the functional relationship between the load rate and energy efficiency ratio of each host under low working conditions; power 节能前1 It is the total power of the host before energy saving under low working conditions.

[0082] Then, a device combination optimization algorithm is used to select at least one target host under each working condition from the hosts under each working condition.

[0083] In this application, in order to optimize energy usage and improve system efficiency in the HVAC system, an equipment combination optimization algorithm is usually used to determine which hosts should be running under different working conditions and how their operating status should be adjusted, aiming to minimize energy consumption through reasonable equipment combination and operating status adjustment.

[0084] The equipment combination optimization algorithm can evaluate all available hosts under low operating conditions and determine which hosts (possibly one or more) can meet the current load requirements with the lowest energy consumption based on the actual total cooling capacity of all hosts in the HVAC system, the operating status of all hosts (such as on / off, power output, etc.), and the rated cooling capacity (or other performance indicators) of all hosts. For example, if the algorithm finds that by shutting down one host and adjusting the load distribution of the remaining hosts to a more optimal state, energy consumption can be significantly reduced without sacrificing system performance, then it will recommend this optimization solution.

[0085] Then, based on the obtained rated cooling capacity of each target host under each operating condition, the functional relationship between the load rate and energy efficiency ratio of each target host, the rated energy efficiency ratio of each target host, the total number of target hosts and the actual total cooling capacity of the target hosts, the total power of the target hosts after energy saving under each operating condition is calculated.

[0086] Specifically, based on the obtained rated cooling capacity of each target host under each working condition, the total number of target hosts and the actual total cooling capacity of the target hosts, the actual cooling capacity of each target host under each working condition is calculated. Based on the obtained rated cooling capacity of each target host under each working condition, the functional relationship between the load rate and the energy efficiency ratio of each target host, the rated energy efficiency ratio of each target host, the total number of target hosts, and the actual cooling capacity of each target host under each working condition, the total power after energy saving of the target host under each working condition is calculated.

[0087] Taking low working condition as an example, based on the rated cooling capacity of each target host under low working condition, the total number of target hosts and the actual total cooling capacity of the target hosts, the actual cooling capacity of each target host under low working condition is calculated. For details, refer to the following formula:

[0088]

[0089] Where B is the total number of target hosts under low working conditions; RP b Indicates the rated cooling capacity of each target host under low operating conditions; is the actual total cooling capacity of the target host under low working conditions; L b is the actual cooling capacity of each target host under low working conditions.

[0090] Based on the obtained rated cooling capacity of each target host under low working conditions, the functional relationship between the load rate and the energy efficiency ratio of each target host, the rated energy efficiency ratio of each target host, the total number of target hosts, and the actual cooling capacity of each target host under low working conditions, the total power of the target host after energy saving under low working conditions is calculated. For details, refer to the following formula:

[0091]

[0092] Where B is the total number of target hosts under low working conditions; RP b is the rated cooling capacity of each target host under low working conditions; L b is the actual cooling capacity of each target host under low working conditions; COP b is the rated energy efficiency ratio of each target host under low working conditions; is the functional relationship between the load rate and energy efficiency ratio of each target host under low working conditions; power 节能后1 It is the total power of the target host after energy saving under low working conditions.

[0093] Similarly, the total power of the host before energy saving under normal working conditions can be calculated in this way: 节能前2 , Total power of the host before energy saving under normal working conditions 节能后2 , Total power of the host before energy saving under high working conditions节能前3 And the total power of the host after energy saving under high working conditions 节能后3 .

[0094] Finally, based on the total power of the host before energy saving under each working condition, the total power of the target host after energy saving under each working condition, and the number of days corresponding to each working condition, the host energy saving rate is calculated.

[0095] First, the total power of the host before energy saving under low working conditions can be calculated. 节能前1 Total power of the host before energy saving under low working conditions 节能后1 Calculate the energy saving rate of the host under low working conditions. For details, please refer to the following formula:

[0096]

[0097] Among them, power 节能前1 The total power of the host before energy saving under low working conditions; power 节能后1 is the total power of the target host after energy saving under low working conditions; energy saving rate 主机1 It is the energy saving rate of the host under low working conditions.

[0098] Similarly, by calculating in this way, the energy saving rate of the host under normal working conditions and the energy saving rate of the host under high working conditions can be obtained.

[0099] Then, the host energy saving rate can be calculated based on the energy saving rate of the host under low working conditions, the energy saving rate of the host under normal working conditions, the energy saving rate of the host under high working conditions and the number of days corresponding to each working condition. For details, please refer to the following formula:

[0100]

[0101] Among them, the energy saving rate 主机1 Energy saving rate of the main engine under low working conditions; Energy saving rate 主机2 Energy saving rate of the main engine under normal working conditions; Energy saving rate 主机3 is the energy saving rate of the main engine under high working conditions; n1 is the number of days corresponding to low working conditions; n2 is the number of days corresponding to general working conditions; n3 is the number of days corresponding to high working conditions; energy saving rate 主机 It is the energy saving rate of the host.

[0102] Step S105: Calculate the energy saving rate of the freezing pump based on the actual frequency of each freezing pump, the functional relationship between the frequency and power of each freezing pump, the functional relationship between the frequency and flow of each freezing pump, the functional relationship between the flow and frequency of each freezing pump, the main return water temperature of the freezing pump, the main supply water temperature of the freezing pump and the total number of freezing pumps.

[0103] It should be noted that the actual frequency determines the speed of the chiller pump, thereby affecting its flow rate and power consumption, usually in Hertz. The functional relationship between frequency and power is a mathematical function used to describe the relationship between the operating frequency of the chiller pump and its power consumption. Usually, as the frequency increases, the power consumption will also increase, but it is not a linear relationship. The functional relationship between frequency and flow is a mathematical function used to describe the relationship between the operating frequency of the chiller pump and its delivery flow. Usually, as the frequency increases, the flow will also increase, but it is also not a linear relationship. The functional relationship between flow and frequency is a mathematical function used to describe the relationship between the delivery flow of the chiller pump and the operating frequency. The main pipe return water temperature indicates the temperature of the chilled water in the main pipe returning from each chiller pump. The main pipe supply water temperature indicates the temperature of the chilled water in the main pipe supplying water to each chiller pump. The chiller pump energy saving rate reflects the degree of influence of energy-saving measures on the power consumption of the chiller pump. The total number of chiller pumps refers to the number of chiller pumps installed in the heating system.

[0104] In the present application, firstly, based on the actual frequency of each refrigeration pump, the functional relationship between the frequency and power of each refrigeration pump, and the total number of refrigeration pumps, the total power of the refrigeration pump before energy saving is calculated. For details, the following formula can be referred to:

[0105]

[0106] Where C is the total number of refrigeration pumps; F c is the actual frequency of each refrigeration pump; f c（功率-频率） is the functional relationship between the frequency and power of each refrigeration pump; power 冷冻泵节能前 It is the total power of the refrigeration pump before energy saving.

[0107] Then, based on the actual frequency of each refrigeration pump, the functional relationship between the frequency and power of each refrigeration pump, the functional relationship between the frequency and flow of each refrigeration pump, the functional relationship between the flow and frequency of each refrigeration pump, the main pipe return water temperature of the refrigeration pump, the main pipe supply water temperature of the refrigeration pump and the total number of refrigeration pumps, the total power of the refrigeration pump after energy saving is calculated. For details, please refer to the following formula:

[0108]

[0109] Where C is the total number of refrigeration pumps; F c is the actual frequency of each refrigeration pump; f c（功率-频率） is the functional relationship between the frequency and power of each refrigeration pump; f c（流量-频率） is the functional relationship between the frequency and flow rate of each refrigeration pump, f c（频率-流量） is the functional relationship between the flow rate and frequency of each refrigeration pump; T 冷冻泵节能前 T is the temperature difference between the return water temperature of the main pipe of the refrigeration pump and the supply water temperature of the main pipe of the refrigeration pump; 冷冻泵节能后is the preset freezing pump temperature; power 冷冻泵节能后 It is the total power of the refrigeration pump after energy saving.

[0110] Finally, based on the total power of the refrigeration pump before energy saving and the total power of the refrigeration pump after energy saving, the energy saving rate of the refrigeration pump is calculated. For details, please refer to the following formula:

[0111]

[0112] Among them, power 冷冻泵节能前 is the total power of the refrigeration pump before energy saving; power 冷冻泵节能后 is the total power of the refrigeration pump after energy saving; energy saving rate 冷冻泵 It is the energy saving rate of the refrigeration pump.

[0113] Step S106: Based on the actual frequency of each cooling pump, the functional relationship between the frequency and power of each cooling pump, the functional relationship between the frequency and flow of each cooling pump, the functional relationship between the flow and frequency of each cooling pump, the main return water temperature of the cooling pump, the main supply water temperature of the cooling pump and the total number of cooling pumps, the cooling pump energy saving rate is calculated.

[0114] It should be noted that the actual frequency refers to the actual operating frequency of the motor during the operation of the cooling pump. The functional relationship between frequency and power is a mathematical function used to describe the relationship between the operating frequency of the cooling pump and its power consumption. Generally, as the frequency increases, the power consumption will also increase, but it is not a linear relationship. The functional relationship between frequency and flow is a mathematical function used to describe the relationship between the operating frequency of the cooling pump and its delivery flow. Generally, as the frequency increases, the flow will also increase, but it is also not a linear relationship. The functional relationship between flow and frequency is a mathematical function used to describe the relationship between the delivery flow of the cooling pump and the operating frequency. The main pipe return water temperature indicates the temperature of the cooling water in the main pipe returning from each cooling pump. The main pipe supply water temperature indicates the temperature of the cooling water in the main pipe supplying water to each cooling pump. The cooling pump energy saving rate reflects the degree of influence of energy saving measures on the power consumption of the cooling pump. The total number of cooling pumps refers to the number of cooling pumps installed in the heating system.

[0115] In this application, firstly, based on the actual frequency of each cooling pump, the functional relationship between the frequency and power of each cooling pump, and the total number of cooling pumps, the total power of the cooling pump before energy saving is calculated. For details, the following formula can be referred to:

[0116]

[0117] Where D is the total number of cooling pumps; F d is the actual frequency of each cooling pump; f d（功率-频率） is the functional relationship between the frequency and power of each cooling pump; power 冷却泵节能前It is the total power of cooling pump before energy saving.

[0118] Then, based on the actual frequency of each cooling pump, the functional relationship between the frequency and power of each cooling pump, the functional relationship between the frequency and flow of each cooling pump, the functional relationship between the flow and frequency of each cooling pump, the main pipe return water temperature of the cooling pump, the main pipe supply water temperature of the cooling pump and the total number of freezing pumps, the total power of the cooling pump after energy saving is calculated. For details, please refer to the following formula:

[0119]

[0120] Where D is the total number of cooling pumps; F d is the actual frequency of each cooling pump; f d（功率-频率） is the functional relationship between the frequency and power of each cooling pump; f d（流量-频率） is the functional relationship between the frequency and flow rate of each cooling pump, f d（频率-流量） is the functional relationship between the flow rate and frequency of each cooling pump; T 冷却泵节能前 T is the temperature difference between the return water temperature of the cooling pump and the supply water temperature of the cooling pump; 冷却泵节能后 is the preset cooling pump temperature; power 冷却泵节能后 It is the total power of cooling pump after energy saving.

[0121] Finally, based on the total power of the cooling pump before energy saving and the total power of the cooling pump after energy saving, the energy saving rate of the cooling pump is calculated. For details, please refer to the following formula:

[0122]

[0123] Among them, power 冷却泵节能前 is the total power of the cooling pump before energy saving; power 冷却泵节能后 is the total power of the cooling pump after energy saving; energy saving rate 冷却泵 Energy saving rate for cooling pump.

[0124] Step S107: Calculate the energy saving rate of the HVAC system based on the energy saving rate of the host, the energy saving rate of the refrigeration pump, the energy saving rate of the cooling pump and the energy saving rate of the energy consumption side of the HVAC system.

[0125] In this application, the main engine energy consumption ratio, the freezing pump energy consumption ratio and the cooling pump energy consumption ratio are first obtained.

[0126] It should be noted that the host energy consumption ratio refers to the ratio of the energy consumed by the host in the entire HVAC system to the total energy consumption of the HVAC system. The refrigeration pump energy consumption ratio refers to the ratio of the energy consumed by the refrigeration pump in the entire HVAC system to the total energy consumption of the HVAC system. The cooling pump energy consumption ratio refers to the ratio of the energy consumed by the cooling pump in the entire HVAC system to the total energy consumption of the HVAC system.

[0127] Then, based on the main engine energy consumption ratio, main engine energy saving rate, refrigeration pump energy consumption ratio, refrigeration pump energy saving rate, cooling pump energy consumption ratio and cooling pump energy saving rate, the energy saving rate of the HVAC system on the energy supply side is calculated. For details, please refer to the following formula:

[0128]

[0129] Among them, r 主机 =Ratio of host energy consumption; Energy saving rate 主机 is the host energy saving rate; r 冷冻泵 is the proportion of energy consumption of refrigeration pump; energy saving rate 冷冻泵 is the energy saving rate of the refrigeration pump; r 冷却泵 is the energy consumption ratio of cooling pump; energy saving rate 冷却泵 Energy saving rate of cooling pump; Energy saving rate 供能侧 It is the energy saving rate of the HVAC system on the energy supply side.

[0130] Finally, based on the energy-saving rate of the HVAC system's energy consumption side and the energy-saving rate of the HVAC system's energy supply side, the energy-saving rate of the HVAC system is calculated. For details, please refer to the following formula:

[0131]

[0132] Among them, the energy saving rate 用能侧 Energy saving rate for the energy-consuming side of the HVAC system; Energy saving rate 供能侧 It is the energy saving rate of the HVAC system on the energy supply side; The energy saving rate is the energy saving rate of the HVAC system.

[0133] In summary, the present application provides a method for calculating the energy saving rate of a HVAC system. The present application first determines the energy saving rate of the HVAC system on the energy consumption side through the actual temperature of the indoor space where the HVAC system is located; then determines the working conditions corresponding to the highest temperature of each day and the number of days corresponding to each working condition, and then calculates the energy saving rate of the host, the energy saving rate of the refrigeration pump and the energy saving rate of the cooling pump by obtaining the information of each host under each working condition, the information of each refrigeration pump, the information of each cooling pump, and the number of days corresponding to each working condition, and then determines the energy saving rate of the HVAC system on the energy supply side; finally, the energy saving rate of the HVAC system on the energy consumption side and the energy saving rate of the HVAC system on the energy supply side are integrated to obtain the overall energy saving rate of the HVAC system. This scheme comprehensively considers multiple factors on the energy consumption side and the functional side of the HVAC system, and especially performs detailed energy saving rate calculations for the host, refrigeration pump and cooling pump, so that the calculation results are more accurate and can more truly reflect the energy saving effect of the HVAC system.

[0134] In order to solve the above problems, the embodiment of the present application provides a method for determining the working conditions corresponding to the maximum temperature of each day. The method for determining the working conditions corresponding to the maximum temperature of each day in the embodiment of the present application is described in detail below in conjunction with the accompanying drawings.

[0135] Reference Figure 2 , Figure 2 A process diagram of a method for determining the operating conditions corresponding to the maximum temperature of each day provided in an embodiment of the present application. A method for determining the operating conditions corresponding to the maximum temperature of each day provided in an embodiment of the present application includes steps 201 to 205, and these steps are described in detail below.

[0136] Step S201: for each daily maximum temperature, determine whether the daily maximum temperature is greater than a first preset temperature value.

[0137] It should be noted that the first preset temperature value is a division value of different working conditions determined based on historical data or expert experience, and is usually set based on the maximum daily temperature. The first preset temperature value is used to indicate the temperature value corresponding to the general working condition.

[0138] In the present application, the operating condition corresponding to the daily maximum temperature is determined by comparing the daily maximum temperature with the first preset temperature value.

[0139] When the daily maximum temperature is not greater than the first preset temperature value, step S202 is executed.

[0140] Step S202: Determine that the operating condition corresponding to the daily maximum temperature is the first operating condition.

[0141] In the present application, if the daily maximum temperature is not greater than the first preset temperature value, the daily maximum temperature is not greater than the temperature value corresponding to the general operating condition. Therefore, the operating condition corresponding to the daily maximum temperature is determined to be a low operating condition, that is, the first operating condition.

[0142] When the daily maximum temperature is greater than the first preset temperature value, step S203 is executed.

[0143] Step S203: Determine whether the daily maximum temperature is greater than a second preset temperature value, and whether the second preset temperature value is greater than the first preset temperature value.

[0144] It should be noted that the second preset temperature value page is a division value of different working conditions determined based on historical data or expert experience, usually set based on the maximum daily temperature, and the second preset temperature value is used to indicate the temperature value corresponding to the high working condition. The temperature value corresponding to the high working condition is greater than the temperature value corresponding to the general working condition.

[0145] In the present application, the operating condition corresponding to the daily maximum temperature is further determined by comparing the daily maximum temperature with the second preset temperature value.

[0146] When the daily maximum temperature is not greater than the second preset temperature value, step S204 is executed.

[0147] Step S204: Determine that the operating condition corresponding to the daily maximum temperature is the second operating condition.

[0148] In the present application, if the daily maximum temperature is not greater than the second preset temperature value, the daily maximum temperature is not greater than the temperature value corresponding to the high operating condition. Therefore, the operating condition corresponding to the daily maximum temperature is determined to be the general operating condition, that is, the second operating condition.

[0149] When the daily maximum temperature is greater than the second preset temperature value, step S205 is executed.

[0150] Step S204: Determine that the operating condition corresponding to the daily maximum temperature is the third operating condition.

[0151] In the present application, if the daily maximum temperature is greater than the second preset temperature value, the daily maximum temperature is greater than the temperature value corresponding to the high operating condition, and therefore the operating condition corresponding to the daily maximum temperature is determined to be the high operating condition, that is, the third operating condition.

[0152] In summary, the present application provides a method for determining the working condition corresponding to the maximum temperature of each day. By comparing the maximum temperature of the day with a plurality of preset temperature values, the working conditions can be accurately divided into different levels, namely the first working condition, the second working condition and the third working condition, taking into account the influence of the current weather conditions on the heating system, which helps to more accurately determine the current working condition.

[0153] A method for calculating the energy saving rate of a HVAC system provided in an embodiment of the present application is introduced above. A device for executing the above method for calculating the energy saving rate of a HVAC system will be introduced below.

[0154] See also Figure 3 , Figure 3 This is a schematic diagram of a device for calculating the energy saving rate of a heating and ventilation system provided in an embodiment of the present application. Figure 3 As shown, the energy saving rate calculation device of the HVAC system includes:

[0155] The acquisition unit 11 is used to acquire the actual temperature of the indoor space where the HVAC system is located and multiple daily maximum temperatures of the outdoor space corresponding to the HVAC system.

[0156] The first calculation unit 12 is used to calculate the energy-consuming side energy-saving rate of the HVAC system based on the actual temperature, the preset temperature and the preset energy-saving rate.

[0157] The determination unit 13 is used to determine the working conditions corresponding to the daily maximum temperatures and the number of days corresponding to the working conditions, wherein the number of days corresponding to the working conditions is the number of the daily maximum temperatures corresponding to the working conditions.

[0158] The second calculation unit 14 is used to calculate the host energy saving rate based on the rated cooling capacity of each of the hosts under each of the operating conditions, the functional relationship between the load rate and the energy efficiency ratio of each of the hosts, the rated energy efficiency ratio of each of the hosts, the total number of the hosts, the actual total cooling capacity of the hosts, and the number of days corresponding to each of the operating conditions.

[0159] The third calculation unit 15 is used to calculate the energy saving rate of the freezing pump based on the actual frequency of each of the freezing pumps, the functional relationship between the frequency and power of each of the freezing pumps, the functional relationship between the frequency and flow of each of the freezing pumps, the functional relationship between the flow and frequency of each of the freezing pumps, the main pipe return water temperature of the freezing pump, the main pipe supply water temperature of the freezing pump and the total number of the freezing pumps.

[0160] The fourth calculation unit 16 is used to calculate the energy saving rate of the cooling pump based on the actual frequency of each cooling pump, the functional relationship between the frequency and power of each cooling pump, the functional relationship between the frequency and flow of each cooling pump, the functional relationship between the flow and frequency of each cooling pump, the main return water temperature of the cooling pump, the main supply water temperature of the cooling pump and the total number of the cooling pumps.

[0161] The fifth calculation unit 17 is used to calculate the energy saving rate of the HVAC system based on the energy saving rate of the host, the energy saving rate of the refrigeration pump, the energy saving rate of the cooling pump and the energy saving rate of the energy consumption side of the HVAC system.

[0162] In a possible implementation, the operating condition includes a first operating condition, a second operating condition and a third operating condition, and the determining unit 13 includes:

[0163] The first judgment subunit is used to judge, for each of the daily maximum temperatures, whether the daily maximum temperature is greater than a first preset temperature value.

[0164] The first determining subunit is used to determine that the operating condition corresponding to the daily maximum temperature is the first operating condition if the daily maximum temperature is not greater than the first preset temperature value.

[0165] The second judgment subunit is used to judge whether the daily maximum temperature is greater than a second preset temperature value if the daily maximum temperature is greater than the first preset temperature value, and the second preset temperature value is greater than the first preset temperature value.

[0166] The second determining subunit is used to determine that the operating condition corresponding to the daily maximum temperature is the second operating condition if the daily maximum temperature is not greater than the second preset temperature value.

[0167] The third determining subunit is used to determine that the operating condition corresponding to the daily maximum temperature is the third operating condition if the daily maximum temperature is greater than the second preset temperature value.

[0168] In a possible implementation, the second computing unit 14 includes:

[0169] The first calculation subunit is used to calculate the total power of the main machine before energy saving under each of the working conditions based on the acquired rated cooling capacity of each of the main machines under each of the working conditions, the functional relationship between the load rate and the energy efficiency ratio of each of the main machines, the rated energy efficiency ratio of each of the main machines, the total number of the main machines and the actual total cooling capacity of the main machines.

[0170] The screening subunit is used to screen out at least one target host under each of the working conditions from the hosts under each of the working conditions by using a device combination optimization algorithm.

[0171] The second calculation subunit is used to calculate the total power of the target host after energy saving under each of the operating conditions based on the acquired rated cooling capacity of each of the target hosts under each of the operating conditions, the functional relationship between the load rate and the energy efficiency ratio of each of the target hosts, the rated energy efficiency ratio of each of the target hosts, the total number of the target hosts and the actual total cooling capacity of the target hosts.

[0172] The third calculation subunit is used to calculate the host energy saving rate based on the total power of the host before energy saving under each of the working conditions, the total power of the target host after energy saving under each of the working conditions, and the number of days corresponding to each of the working conditions.

[0173] In a possible implementation, the first computing subunit includes:

[0174] The fourth calculation subunit is used to calculate the actual cooling capacity of each of the main machines under each of the working conditions based on the acquired rated cooling capacity of each of the main machines under each of the working conditions, the total number of the main machines and the actual total cooling capacity of the main machines.

[0175] The fifth calculation subunit is used to calculate the total power of the host before energy saving under each of the working conditions based on the acquired rated cooling capacity of each of the host under each of the working conditions, the functional relationship between the load rate and the energy efficiency ratio of each of the host, the rated energy efficiency ratio of each of the host, the total number of the host, and the actual cooling capacity of each of the host under each of the working conditions.

[0176] In a possible implementation, the third computing unit 15 includes:

[0177] The sixth calculation subunit is used to calculate the total power of the refrigeration pump before energy saving based on the acquired actual frequency of each of the refrigeration pumps, the functional relationship between the frequency and power of each of the refrigeration pumps, and the total number of the refrigeration pumps.

[0178] The seventh calculation subunit is used to calculate the total power of the freezing pump after energy saving based on the actual frequency of each of the freezing pumps, the functional relationship between the frequency and power of each of the freezing pumps, the functional relationship between the frequency and flow of each of the freezing pumps, the functional relationship between the flow and frequency of each of the freezing pumps, the main pipe return water temperature of the freezing pump, the main pipe supply water temperature of the freezing pump and the total number of the freezing pumps.

[0179] The eighth calculation subunit is used to calculate the energy saving rate of the refrigeration pump based on the total power of the refrigeration pump before energy saving and the total power of the refrigeration pump after energy saving.

[0180] In a possible implementation, the fifth calculating unit 17 includes:

[0181] The acquisition subunit is used to obtain the energy consumption proportion of the host, the energy consumption proportion of the freezing pump and the energy consumption proportion of the cooling pump.

[0182] The ninth calculation subunit is used to calculate the energy saving rate of the HVAC system on the energy supply side based on the host energy consumption proportion, the host energy saving rate, the refrigeration pump energy consumption proportion, the refrigeration pump energy saving rate, the cooling pump energy consumption proportion and the cooling pump energy saving rate.

[0183] The tenth calculation subunit is used to calculate the energy saving rate of the HVAC system based on the energy saving rate of the energy consumption side of the HVAC system and the energy saving rate of the energy supply side of the HVAC system.

[0184] The present application also provides an electronic device in an embodiment. Figure 4 As shown, it shows a schematic diagram of the structure of an electronic device suitable for implementing the embodiment of the present application. The electronic device in the embodiment of the present application may include but is not limited to fixed terminals such as mobile phones, laptops, PDAs (personal digital assistants), PADs (tablet computers), desktop computers, etc. Figure 4 The electronic device shown is merely an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0185] like Figure 4 As shown, the electronic device may include a processing device (e.g., a central processing unit, a graphics processing unit, etc.) 401, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 402 or a program loaded from a storage device 408 to a random access memory (RAM) 403. When the electronic device is powered on, various programs and data required for the operation of the electronic device are also stored in the RAM 403. The processing device 401, the ROM 402, and the RAM 403 are connected to each other via a bus 404. An input / output (I / O) interface 405 is also connected to the bus 404.

[0186] Typically, the following devices may be connected to the I / O interface 405: an input device 406 including, for example, a touch screen, a touch pad, a keyboard, a mouse, a camera, a microphone, an accelerometer, a gyroscope, etc.; an output device 407 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; a storage device 408 including, for example, a memory card, a hard disk, etc.; and a communication device 409. The communication device 409 may allow the electronic device to communicate with other devices wirelessly or by wire to exchange data. Although Figure 4 An electronic device having various devices is shown, but it should be understood that it is not required to implement or possess all the devices shown. More or fewer devices may be implemented or possessed instead.

[0187] An embodiment of the present application also provides a computer program product including computer-readable instructions. When the computer-readable instructions are executed on an electronic device, the electronic device implements any method for calculating the energy saving rate of a HVAC system provided in the embodiment of the present application.

[0188] A computer-readable storage medium is also provided in an embodiment of the present application. The storage medium carries one or more computer programs. When one or more computer programs are executed by an electronic device, the electronic device can implement any of the energy-saving rate calculation methods for HVAC systems provided in the embodiments of the present application.

[0189] It should also be noted that the device embodiments described above are merely schematic, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed over multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. In addition, in the drawings of the device embodiments provided by the present application, the connection relationship between the modules indicates that there is a communication connection between them, which may be specifically implemented as one or more communication buses or signal lines.

[0190] Through the description of the above implementation mode, the technicians in the field can clearly understand that the present application can be implemented by means of software plus necessary general hardware, and of course, it can also be implemented by special hardware including special integrated circuits, special CPUs, special memories, special components, etc. In general, all functions completed by computer programs can be easily implemented by corresponding hardware, and the specific hardware structure used to implement the same function can also be various, such as analog circuits, digital circuits or special circuits. However, for the present application, software program implementation is a better implementation mode in more cases. Based on such an understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a readable storage medium, such as a computer floppy disk, a U disk, a mobile hard disk, a ROM, a RAM, a disk or an optical disk, etc., including a number of instructions to enable a computer device (which can be a personal computer, a training device, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0191] In the above embodiments, all or part of the embodiments may be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part of the embodiments may be implemented in the form of a computer program product.

[0192] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website site, a computer, a training device, or a data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, training device, or data center. The computer-readable storage medium may be any available medium that a computer can store or a data storage device such as a training device, a data center, etc. that includes one or more available media integrations. The available medium may be a magnetic medium, (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state drive (SSD)), etc.

Claims

1. A method for calculating the energy saving rate of a HVAC system, characterized in that: The energy supply side equipment of the heating system includes at least one host, at least one refrigeration pump and at least one cooling pump, and the method includes: Obtaining the actual temperature of the indoor space where the HVAC system is located and multiple daily maximum temperatures of the outdoor space corresponding to the HVAC system; Based on the actual temperature, the preset temperature and the preset energy saving rate, the energy consumption side energy saving rate of the HVAC system is calculated; Determine the working conditions corresponding to the daily maximum temperatures and the number of days corresponding to the working conditions, the number of days corresponding to the working conditions being the number of the daily maximum temperatures corresponding to the working conditions; Based on the obtained rated cooling capacity of each host under each of the operating conditions, the functional relationship between the load rate and the energy efficiency ratio of each host, the rated energy efficiency ratio of each host, the total number of hosts, the actual total cooling capacity of the hosts, and the number of days corresponding to each of the operating conditions, the host energy saving rate is calculated; The energy saving rate of the freezing pump is calculated based on the actual frequency of each of the freezing pumps, the functional relationship between the frequency and power of each of the freezing pumps, the functional relationship between the frequency and flow rate of each of the freezing pumps, the functional relationship between the flow rate and frequency of each of the freezing pumps, the main pipe return water temperature of the freezing pump, the main pipe supply water temperature of the freezing pump and the total number of the freezing pumps; The energy saving rate of the cooling pump is calculated based on the actual frequency of each cooling pump, the functional relationship between the frequency and the power of each cooling pump, the functional relationship between the frequency and the flow rate of each cooling pump, the functional relationship between the flow rate and the frequency of each cooling pump, the main pipe return water temperature of the cooling pump, the main pipe supply water temperature of the cooling pump and the total number of the cooling pumps; The energy saving rate of the HVAC system is calculated based on the energy saving rate of the main engine, the energy saving rate of the refrigeration pump, the energy saving rate of the cooling pump and the energy saving rate of the energy consumption side of the HVAC system.

2. The method for calculating the energy saving rate of a HVAC system according to claim 1, characterized in that: The operating conditions include a first operating condition, a second operating condition and a third operating condition, and the determining of the operating conditions corresponding to the maximum temperature of each day includes: For each of the daily maximum temperatures, determining whether the daily maximum temperature is greater than a first preset temperature value; If the daily maximum temperature is not greater than the first preset temperature value, determining that the operating condition corresponding to the daily maximum temperature is the first operating condition; If the daily maximum temperature is greater than the first preset temperature value, determining whether the daily maximum temperature is greater than a second preset temperature value, the second preset temperature value being greater than the first preset temperature value; If the daily maximum temperature is not greater than the second preset temperature value, determining that the operating condition corresponding to the daily maximum temperature is the second operating condition; If the daily maximum temperature is greater than the second preset temperature value, it is determined that the operating condition corresponding to the daily maximum temperature is the third operating condition.

3. The method for calculating the energy saving rate of a HVAC system according to claim 1, characterized in that: The energy saving rate of the host is calculated based on the rated cooling capacity of each host under each of the working conditions, the functional relationship between the load rate and the energy efficiency ratio of each host, the rated energy efficiency ratio of each host, the total number of the hosts, the actual total cooling capacity of the hosts, and the number of days corresponding to each of the working conditions, including: Based on the obtained rated cooling capacity of each of the hosts under each of the working conditions, the functional relationship between the load rate and the energy efficiency ratio of each of the hosts, the rated energy efficiency ratio of each of the hosts, the total number of the hosts and the actual total cooling capacity of the hosts, the total power of the hosts before energy saving under each of the working conditions is calculated; Using a device combination optimization algorithm to select at least one target host under each of the working conditions from the hosts under each of the working conditions; Based on the obtained rated cooling capacity of each of the target hosts under each of the working conditions, the functional relationship between the load rate and the energy efficiency ratio of each of the target hosts, the rated energy efficiency ratio of each of the target hosts, the total number of the target hosts and the actual total cooling capacity of the target hosts, the total power of the target hosts after energy saving under each of the working conditions is calculated; The energy saving rate of the host is calculated based on the total power of the host before energy saving under each of the working conditions, the total power of the target host after energy saving under each of the working conditions, and the number of days corresponding to each of the working conditions.

4. The method for calculating the energy saving rate of a HVAC system according to claim 3, characterized in that: The total power before energy saving of the host under each of the working conditions is calculated based on the obtained rated cooling capacity of each of the hosts under each of the working conditions, the functional relationship between the load rate and the energy efficiency ratio of each of the hosts, the rated energy efficiency ratio of each of the hosts, the total number of the hosts and the actual total cooling capacity of the hosts, including: Based on the obtained rated cooling capacity of each of the main machines under each of the working conditions, the total number of the main machines and the actual total cooling capacity of the main machines, the actual cooling capacity of each of the main machines under each of the working conditions is calculated; Based on the obtained rated cooling capacity of each of the main machines under each of the working conditions, the functional relationship between the load rate and the energy efficiency ratio of each of the main machines, the rated energy efficiency ratio of each of the main machines, the total number of the main machines, and the actual cooling capacity of each of the main machines under each of the working conditions, the total power of the main machines before energy saving under each of the working conditions is calculated.

5. The method for calculating the energy saving rate of a HVAC system according to claim 1, characterized in that: The energy saving rate of the freezing pump is calculated based on the actual frequency of each of the freezing pumps, the functional relationship between the frequency and power of each of the freezing pumps, the functional relationship between the frequency and flow of each of the freezing pumps, the functional relationship between the flow and frequency of each of the freezing pumps, the main pipe return water temperature of the freezing pump, the main pipe supply water temperature of the freezing pump and the total number of the freezing pumps, including: Based on the acquired actual frequency of each of the refrigeration pumps, the functional relationship between the frequency and power of each of the refrigeration pumps, and the total number of the refrigeration pumps, the total power of the refrigeration pumps before energy saving is calculated; Based on the actual frequency of each of the refrigeration pumps, the functional relationship between the frequency and power of each of the refrigeration pumps, the functional relationship between the frequency and flow rate of each of the refrigeration pumps, the functional relationship between the flow rate and frequency of each of the refrigeration pumps, the main pipe return water temperature of the refrigeration pumps, the main pipe supply water temperature of the refrigeration pumps and the total number of the refrigeration pumps, the total power of the refrigeration pump after energy saving is calculated; The energy saving rate of the refrigeration pump is calculated based on the total power of the refrigeration pump before energy saving and the total power of the refrigeration pump after energy saving.

6. The method for calculating the energy saving rate of a HVAC system according to claim 1, characterized in that: The energy saving rate of the HVAC system is calculated based on the energy saving rate of the host, the energy saving rate of the refrigeration pump, the energy saving rate of the cooling pump and the energy consumption side energy saving rate of the HVAC system, including: Obtain the energy consumption ratio of the host, the energy consumption ratio of the refrigeration pump and the energy consumption ratio of the cooling pump; The energy-supply-side energy-saving rate of the HVAC system is calculated based on the main engine energy consumption proportion, the main engine energy-saving rate, the refrigeration pump energy consumption proportion, the refrigeration pump energy-saving rate, the cooling pump energy consumption proportion and the cooling pump energy-saving rate; The energy saving rate of the HVAC system is calculated based on the energy saving rate on the energy consumption side of the HVAC system and the energy saving rate on the energy supply side of the HVAC system.

7. A device for calculating energy saving rate of a heating and ventilation system, characterized in that: include: An acquisition unit, used to acquire the actual temperature of the indoor space where the HVAC system is located and multiple daily maximum temperatures of the outdoor space corresponding to the HVAC system; A first calculation unit, configured to calculate an energy-consuming side energy-saving rate of the HVAC system based on the actual temperature, the preset temperature and the preset energy-saving rate; A determination unit, used to determine the working conditions corresponding to the daily maximum temperatures and the number of days corresponding to the working conditions, wherein the number of days corresponding to the working conditions is the number of the daily maximum temperatures corresponding to the working conditions; A second calculation unit is used to calculate the host energy saving rate based on the rated cooling capacity of each host under each of the operating conditions, the functional relationship between the load rate and the energy efficiency ratio of each host, the rated energy efficiency ratio of each host, the total number of the hosts, the actual total cooling capacity of the hosts, and the number of days corresponding to each of the operating conditions; A third calculation unit is used to calculate the energy saving rate of the freezing pump based on the acquired actual frequency of each of the freezing pumps, the functional relationship between the frequency and power of each of the freezing pumps, the functional relationship between the frequency and flow rate of each of the freezing pumps, the functional relationship between the flow rate and frequency of each of the freezing pumps, the main pipe return water temperature of the freezing pump, the main pipe supply water temperature of the freezing pump and the total number of the freezing pumps; a fourth calculation unit, for calculating the energy saving rate of the cooling pump based on the acquired actual frequency of each cooling pump, the functional relationship between the frequency and the power of each cooling pump, the functional relationship between the frequency and the flow rate of each cooling pump, the functional relationship between the flow rate and the frequency of each cooling pump, the main pipe return water temperature of the cooling pump, the main pipe supply water temperature of the cooling pump and the total number of the cooling pumps; The fifth calculation unit is used to calculate the energy saving rate of the HVAC system based on the energy saving rate of the main engine, the energy saving rate of the refrigeration pump, the energy saving rate of the cooling pump and the energy saving rate of the energy consumption side of the HVAC system.

8. A computer program product, characterized in that It comprises computer-readable instructions, and when the computer-readable instructions are executed on an electronic device, the electronic device implements the energy-saving rate calculation method for a HVAC system as claimed in any one of claims 1 to 6.

9. An electronic device, characterized in that: The method comprises at least one processor and a memory connected to the processor, wherein: The memory is used to store computer programs; The processor is used to execute the computer program so that the electronic device can implement the energy saving rate calculation method of the HVAC system as described in any one of claims 1 to 6.

10. A computer storage medium, characterized in that: The storage medium carries one or more computer programs, and when the one or more computer programs are executed by an electronic device, the electronic device can implement the energy saving rate calculation method for a HVAC system as described in any one of claims 1 to 6.

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