Method for calculating energy saving rate of heating system and related device

Abstract

The application discloses a kind of energy-saving rate determination method of heating ventilation system and related device, it is related to data analysis technical field, comprising: first, the actual temperature of the indoor space where heating ventilation system is located determines the energy-saving rate of heating ventilation system use side;Then determine the working condition corresponding to each day maximum temperature and the number of days corresponding to each working condition, then 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 are obtained, the energy-saving rate of host, the energy-saving rate of refrigeration pump and the energy-saving rate of cooling pump are calculated, and then the energy-saving rate of energy supply side of heating ventilation system is determined;Finally, the energy-saving rate of energy use side of heating ventilation system and the energy-saving rate of energy supply side of heating ventilation system are integrated to obtain.The scheme comprehensively considers multiple factors of energy use side and function side of heating ventilation system, so that the calculation result is more accurate, and the energy-saving effect of heating ventilation system can be more truly reflected.

Description

Technical Field

[0001] The present application relates to the field of data analysis technology, 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 shortages and environmental pollution have become serious challenges facing the world, prompting all industries to continuously seek new methods and technologies for energy conservation and emission reduction. In this context, HVAC systems, as essential components for indoor environmental regulation, are crucial for reducing overall building energy consumption and alleviating environmental pressures.

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

[0004] However, the HVAC system is a complex whole consisting of multiple components. Determining the energy saving rate of the HVAC system based solely on the overall energy consumption data of the HVAC system is less accurate. 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 solution 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. The method comprises:

[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] Calculating 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;

[0009] Determine the operating conditions corresponding to the maximum daily temperatures and the number of days corresponding to the operating conditions, where the number of days corresponding to the operating conditions is the number of the maximum daily temperatures corresponding to the operating conditions;

[0010] Calculate the host energy saving rate based on the obtained rated cooling capacity of each host under each operating condition, 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, the actual total cooling capacity of the hosts, and the number of days corresponding to each operating condition;

[0011] Calculate the energy saving rate of the freezing pump 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 rate of each freezing pump, the functional relationship between the flow rate 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;

[0012] Calculate the cooling pump energy saving rate based on the acquired 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 cooling pumps;

[0013] 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.

[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 condition corresponding to each of the daily maximum temperatures 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 calculating of the host energy saving rate based on the obtained 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 includes:

[0021] Calculate the total power of the hosts before energy saving under each of the operating conditions based on the obtained 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, and the actual total cooling capacity of the hosts;

[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 target host under each of the operating 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 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 operating conditions is calculated;

[0024] The host energy saving rate 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 one possible implementation, the calculating of the total power before energy saving of the host under each of the operating conditions based on the obtained 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, and the actual total cooling capacity of the hosts includes:

[0026] Calculate the actual cooling capacity of each host under each operating condition based on the obtained rated cooling capacity of each host under each operating condition, the total number of the hosts, and the actual total cooling capacity of the hosts;

[0027] Based on the obtained 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, and the actual cooling capacity of each of the hosts under each of the operating conditions, the total power of the hosts before energy saving under each of the operating conditions is calculated.

[0028] In one possible implementation, calculating the energy saving rate of the freezing pump 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 rate of each freezing pump, the functional relationship between the flow rate 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 includes:

[0029] Calculating the total power of the refrigeration pumps before energy saving based on the obtained actual frequency of each refrigeration pump, the functional relationship between the frequency and power of each refrigeration pump, and the total number of the refrigeration pumps;

[0030] Calculate the total power of the freezing pump after energy saving 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 rate of each freezing pump, the functional relationship between the flow rate 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;

[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, calculating the energy saving rate of the HVAC system based on the host energy saving rate, the refrigeration pump energy saving rate, the cooling pump energy saving rate, and the energy consumption side energy saving rate of the HVAC system includes:

[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 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;

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

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

[0037] an acquisition unit, configured 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 determining unit, configured to determine the operating conditions corresponding to the daily maximum temperatures and the number of days corresponding to the operating conditions, wherein the number of days corresponding to the operating conditions is the number of the daily maximum temperatures corresponding to the operating conditions;

[0040] a second calculation unit, configured to calculate a host energy saving rate based on the obtained rated cooling capacity of each host under each of the operating conditions, a 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, configured to calculate a refrigeration pump energy saving rate based on the acquired 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 rate of each refrigeration pump, the functional relationship between the flow rate 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 the refrigeration pumps;

[0042] a fourth calculation unit, configured to calculate a cooling pump energy saving rate based on the acquired 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;

[0043] The fifth calculation unit is used to calculate the energy saving rate of the HVAC system based on the main engine energy saving rate, the refrigeration pump energy saving rate, the cooling pump energy saving rate and the energy consumption side energy saving rate 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 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] In a fifth aspect, 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 solution, 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 maximum 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 energy supply side of the HVAC system; finally, 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 are integrated to obtain the overall energy saving rate of the HVAC system. This solution 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 various embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. Throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that 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 schematic diagram of a process for determining the operating 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 accompanying drawings. The terms used in the implementation methods 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 are not necessarily 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, and this is merely a way of distinguishing the objects of the same attributes when describing them 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 the HVAC system, the present application provides a method for calculating the energy saving rate of the HVAC system. The following is a further detailed description of the energy saving rate calculation method of the HVAC system provided in the present application in combination with the drawings and specific implementation methods.

[0059] Please see the attached Figure 1 , Figure 1 This is 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 equipment on the energy supply side but also assesses energy consumption on the energy consumption side through parameters such as indoor temperature. Specifically, seasonal differences can be considered, with separate assessments based on the operating characteristics of different seasons, such as summer, winter, and transitional seasons. Equipment operating in different seasons varies. For example, in summer, the main unit, chiller pump, and cooling pump must operate to meet cooling needs; in winter, only the main unit and chiller pump must operate to meet heating needs. During the transitional season, temperatures fluctuate significantly, requiring the main unit, chiller pump, and cooling pump to operate during certain periods, while only the main unit and chiller pump must operate during other periods.

[0061] Taking summer as an example, the main unit, as the core equipment of the HVAC system, accounts for a significant portion of total energy consumption and is therefore the focus of energy conservation assessments. Chiller pumps, used to circulate chilled water, also consume relatively high amounts of energy and require energy conservation assessments. Cooling pumps, which operate in cooling seasons like summer and circulate cooling water, also require energy conservation assessments.

[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 current actual temperature of the indoor space where the heating and ventilation system is located, which is usually obtained by temperature sensors and other devices. The plurality of daily maximum temperatures refer to the maximum temperature of the outdoor space corresponding to the heating and ventilation system every day within a period of time (such as a week, a month, etc.), which helps to understand the influence of the outdoor environment on the indoor temperature and the energy consumption of the heating and ventilation system.

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

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

[0066] In this application, the energy saving rate of the energy consumption side of the heating and ventilation system mainly considers the supply-demand matching of the terminal, i.e. the difference between the actual indoor temperature and the set temperature, which can be specifically referred to the following formula:

[0067]

[0068] Wherein, T 预设 is the preset temperature; T 实际 is the actual temperature; η is the preset energy saving rate; the energy saving rate 用能侧 is the energy saving rate of the energy consumption side of the heating and ventilation system.

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

[0070] It should be noted that the working condition includes the first working condition, the second working condition and the third working condition. The first working condition (low working condition) is the working condition when the outdoor temperature is low, resulting in low heating and ventilation system load; the second working condition (general working condition) is the working condition when the outdoor temperature is moderate, and the heating and ventilation system load is at a moderate level; the third working condition (high working condition) is the working condition when the outdoor temperature is high, and the heating and ventilation system needs to run at full capacity to meet the indoor comfort requirement.

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

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

[0073] In this application, the total power of the host before energy saving 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 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 operating in the heating system. The actual total cooling capacity of the hosts refers to the cooling capacity of all hosts operating 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, which 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 operating condition is calculated based on the obtained rated cooling capacity of each host under each operating condition, the total number of hosts, and the actual total cooling capacity of the hosts. The total power of the hosts before energy saving under each operating condition is calculated based on the obtained rated cooling capacity of each host under each operating condition, the functional relationship between the load factor 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 operating condition.

[0076] Taking low operating conditions as an example, based on the rated cooling capacity of each host under low operating conditions, the total number of hosts, and the actual total cooling capacity of the hosts, the actual cooling capacity of each host under low operating conditions 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 obtained rated refrigerating capacity of each host under the low 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 refrigerating capacity of each host under the low working condition, the total power of the host before energy saving under the low working condition is calculated, which can be specifically referred to the following formula:

[0080]

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

[0082] Then, at least one target host under each working condition is selected from the hosts under each working condition by using the equipment combination optimization algorithm.

[0083] In the present application, in order to optimize energy use and improve system efficiency in a heating and ventilation system, an equipment combination optimization algorithm is usually used to determine which hosts should be running under different working conditions and how their running states should be adjusted, aiming to minimize energy consumption through reasonable equipment combination and running state adjustment.

[0084] The equipment combination optimization algorithm can evaluate all available hosts under the low working condition according to the actual total refrigerating capacity of all hosts, the running state of all hosts (such as on / off, power output, etc.), and the rated refrigerating capacity (or other performance indicators) of all hosts, and determine which combination of hosts (may be one or more) can meet the current load demand with the lowest energy consumption. 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, the energy consumption can be significantly reduced without sacrificing system performance, then it will recommend this optimization scheme.

[0085] Based on the obtained rated refrigerating 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 total refrigerating capacity of the target host, the total power of the target host after energy saving under each working condition is calculated.

[0086] Specifically, based on the obtained rated cooling capacity of each target host under each operating 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 operating condition is calculated. Based on the obtained rated cooling capacity of each target host under each operating 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 operating condition, the total power after energy saving of the target host under each operating condition is calculated.

[0087] Taking low operating conditions as an example, based on the rated cooling capacity of each target host under low operating conditions, 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 operating conditions is calculated. For details, please 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 operating conditions, 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 cooling capacity of each target host under low operating conditions, the total power of the target host after energy saving under low operating 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 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, the host energy saving rate is calculated 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.

[0095] First, the total power before energy saving of the host under low working conditions can be calculated. 节能前1 And the 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. Please refer to the following formula for details:

[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 The total power of the target host after energy saving under low working conditions; the 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 host energy saving rate under low working conditions, the host energy saving rate under normal working conditions, the host energy saving rate 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 host under low working conditions; Energy saving rate 主机2 Energy saving rate of the host under normal working conditions; Energy saving rate 主机3 is the energy saving rate of the host under high working conditions; n1 is the number of days corresponding to low working conditions; n2 is the number of days corresponding to normal working conditions; n3 is the number of days corresponding to high working conditions; energy saving rate 主机 The energy saving rate of the host.

[0102] Step S105: 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 energy saving rate of the refrigeration pump is calculated.

[0103] It should be noted that the actual frequency determines the speed of the chiller pump, which in turn affects its flow rate and power consumption. It is typically measured in Hertz. The frequency-power relationship describes the mathematical relationship between the chiller pump's operating frequency and its power consumption. Generally, as frequency increases, power consumption also increases, but the relationship is not linear. The frequency-flow relationship describes the mathematical relationship between the chiller pump's operating frequency and its delivery flow rate. Generally, as frequency increases, flow also increases, but the relationship is also not linear. The flow-frequency relationship describes the mathematical relationship between the chiller pump's delivery flow rate and its operating frequency. The mains return water temperature indicates the temperature of the chilled water returning from each chiller pump. The mains supply water temperature indicates the temperature of the chilled water in the mains supplying each chiller pump. The chiller pump energy saving rate reflects the impact of energy-saving measures on chiller pump power consumption. The total number of chiller pumps refers to the number of chiller pumps installed in the heating system.

[0104] In this application, the total power of the refrigeration pumps before energy saving is calculated 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. For details, please refer to the following formula:

[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 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 refrigeration pump temperature; power 冷冻泵节能后 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, which can be specifically referred to the following formula:

[0111]

[0112] wherein, 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 is the energy saving rate of the refrigeration pump.

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

[0114] It should be noted that the actual frequency refers to the actual working frequency of the motor of the cooling pump in the running process. The functional relationship between the frequency and the power is used to describe the mathematical function of the relationship between the running frequency of the cooling pump and its power consumption. Generally, with the increase of the frequency, the power consumption will also increase, but it is not a linear relationship. The functional relationship between the frequency and the flow is used to describe the mathematical function of the relationship between the running frequency of the cooling pump and its delivery flow. Generally, with the increase of the frequency, the flow will also increase, but it is also not a linear relationship. The functional relationship between the flow and the frequency is used to describe the mathematical function of the relationship between the delivery flow of the cooling pump and the running frequency. The total pipe return water temperature represents the temperature of the cooling water in the total pipe returned from each cooling pump. The total pipe supply water temperature represents the temperature of the cooling water in the total pipe supplied to each cooling pump. The energy saving rate of the cooling pump reflects the influence degree of the 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 the present application, first, based on the obtained actual frequency of each cooling pump, the functional relationship between the frequency and the power of each cooling pump and the total number of cooling pumps, the total power of the cooling pump before energy saving is calculated, which can be specifically referred to the following formula:

[0116]

[0117] wherein, 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 the power of each cooling pump; power 冷却泵节能前Total power of the cooling pumps before energy saving.

[0118] Then, based on the actual frequency of each cooling pump, the function relationship between the frequency and the power of each cooling pump, the function relationship between the frequency and the flow of each cooling pump, the function relationship between the flow and the frequency of each cooling pump, the total pipe return water temperature of the cooling pump, the total pipe supply water temperature of the cooling pump and the total number of the refrigeration pumps, the total power of the cooling pumps after energy saving is calculated, which can be specifically referred to the following formula:

[0119]

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

[0121] Finally, based on the total power of the cooling pumps before energy saving and the total power of the cooling pumps after energy saving, the energy saving rate of the cooling pumps is calculated, which can be specifically referred to the following formula:

[0122]

[0123] Wherein, power 冷却泵节能前 is the total power of the cooling pumps before energy saving; power 冷却泵节能后 is the total power of the cooling pumps after energy saving; energy saving rate 冷却泵 is the energy saving rate of the cooling pumps.

[0124] Step S107: 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 heating and ventilation system, the energy saving rate of the heating and ventilation system is calculated.

[0125] In the present application, the host energy consumption proportion, the refrigeration pump energy consumption proportion and the cooling pump energy consumption proportion are first acquired.

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

[0127] Then, based on the main unit energy consumption ratio, main unit energy saving rate, chiller pump energy consumption ratio, chiller pump energy saving rate, cooling pump energy consumption ratio and cooling pump energy saving rate, the energy saving rate of the HVAC system's 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 proportion of cooling pump energy consumption; 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 consumption 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 by the actual temperature of the indoor space where the HVAC system is located; then determines the working conditions corresponding to the maximum 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 energy supply side of the HVAC system; finally, 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 are integrated to obtain the overall energy saving rate of the HVAC system. This solution 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] To solve the above problem, the present invention 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 according to the present invention is described in detail below with reference to the accompanying drawings.

[0135] Reference Figure 2 , Figure 2 This is 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. The 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 for 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 this 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, so the operating condition corresponding to the daily maximum temperature is determined to be the 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: determining 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 for different operating conditions determined based on historical data or expert experience. It is usually set based on the maximum daily temperature. The second preset temperature value is used to indicate the temperature value corresponding to high operating conditions. The temperature value corresponding to high operating conditions is higher than the temperature value corresponding to normal operating conditions.

[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] If 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 this 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, so 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 this 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, so 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, this application provides a method for determining the operating condition corresponding to each daily maximum temperature. By comparing the daily maximum temperature with multiple preset temperature values, the operating conditions can be accurately classified into different levels, namely, the first operating condition, the second operating condition, and the third operating condition. This method takes into account the impact of current weather conditions on the heating system and helps to more accurately determine the current operating condition.

[0153] The above describes a method for calculating the energy saving rate of a HVAC system provided by an embodiment of the present application. The following describes a device for executing the above method for calculating the energy saving rate of a HVAC system.

[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 configured 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 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.

[0157] The determination unit 13 is configured to determine the operating conditions corresponding to the daily maximum temperatures and the number of days corresponding to the operating conditions, where the number of days corresponding to the operating conditions is the number of daily maximum temperatures corresponding to the operating 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 cooling pump energy saving rate 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 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 conditions include 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 configured 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 configured 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 configured 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 host before energy saving under each of the operating conditions based on the obtained rated cooling capacity of each of the host under each of the operating 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 total cooling capacity of the host.

[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 obtained 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 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.

[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 hosts under each of the working conditions based on the acquired rated cooling capacity of each of the hosts under each of the working conditions, the total number of the hosts and the actual total cooling capacity of the hosts.

[0175] The fifth calculation subunit is used to calculate the total power of the host before energy saving under each of the operating conditions based on the rated cooling capacity of each of the host under each of the operating 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 operating conditions.

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

[0177] The sixth calculation subunit is configured to calculate the total power of the refrigeration pumps before energy saving based on the acquired actual frequency of each refrigeration pump, the functional relationship between the frequency and power of each refrigeration pump, 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 configured to calculate an 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 computing unit 17 includes:

[0181] The acquisition subunit is used to obtain the energy consumption ratio of the host, the energy consumption ratio of the freezing pump, and the energy consumption ratio 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] An electronic device is also provided in an embodiment of the present application. Figure 4 , which shows a schematic diagram of the structure of an electronic device suitable for implementing the embodiments of the present application. The electronic device in the embodiments 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 limit 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 based on programs stored in a read-only memory (ROM) 402 or programs loaded from a storage device 408 into a random access memory (RAM) 403. When the electronic device is powered on, the RAM 403 also stores various programs and data required for the operation of the electronic device. The processing device 401, ROM 402, and RAM 403 are interconnected 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 touchpad, 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. Figure 4 The electronic device is shown with various devices, but it should be understood that it is not required to implement or possess all of 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 of the HVAC system energy saving rate calculation methods provided in the embodiments 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 the 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 illustrative, wherein the units described as separate components may or may not be physically separate, 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 across multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the present embodiment. In addition, in the drawings of the device embodiments provided in this application, the connection relationship between the modules indicates that there is a communication connection between them, which can be specifically implemented as one or more communication buses or signal lines.

[0190] Through the description of the above embodiments, those skilled in the art can clearly understand that the present application can be implemented by means of software plus necessary general hardware, and of course can also be implemented by special hardware including application-specific integrated circuits, special CPUs, special memories, special components, etc. In general, all functions performed by computer programs can be easily implemented with corresponding hardware, and the specific hardware structures used to implement the same function can also be diverse, such as analog circuits, digital circuits or special circuits, etc. However, for the present application, software program implementation is a better implementation method in most cases. Based on this 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's floppy disk, USB flash drive, mobile hard disk, ROM, RAM, magnetic disk or optical disk, etc., and includes a number of instructions to enable a computer device (which can be a personal computer, training equipment, or network equipment, 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 can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can 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 can be transmitted from a website, 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, a computer, a training device or a data center. The computer-readable storage medium can 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 can 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)).

Claims

1. A method for calculating the energy saving rate of a heating and ventilation system, characterized in that: The energy supply side equipment of the HVAC 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; Calculating 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; Determine the operating conditions corresponding to the maximum daily temperatures and the number of days corresponding to the operating conditions, where the number of days corresponding to the operating conditions is the number of the maximum daily temperatures corresponding to the operating conditions; Calculate the host energy saving rate based on the obtained rated cooling capacity of each host under each operating condition, 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, the actual total cooling capacity of the hosts, and the number of days corresponding to each operating condition; Calculate the energy saving rate of the freezing pump 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 rate of each freezing pump, the functional relationship between the flow rate 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; Calculate the cooling pump energy saving rate based on the obtained 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 cooling pumps; 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.

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 determining the operating condition corresponding to each of the daily maximum temperatures 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 host energy saving rate is calculated based on the obtained 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, including: Calculate the total power of the hosts before energy saving under each of the operating conditions based on the obtained 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, and the actual total cooling capacity of the hosts; 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 target host under each of the operating 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 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 operating conditions is calculated; The host energy saving rate 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 calculating of the total power before energy saving of the host under each of the operating conditions based on the obtained rated cooling capacity of each of the host under each of the operating 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 total cooling capacity of the host includes: Calculate the actual cooling capacity of each host under each operating condition based on the obtained rated cooling capacity of each host under each operating condition, the total number of the hosts, and the actual total cooling capacity of the hosts; Based on the obtained 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, and the actual cooling capacity of each of the hosts under each of the operating conditions, the total power of the hosts before energy saving under each of the operating 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 pumps is calculated based on the obtained 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: Calculating the total power of the refrigeration pumps before energy saving based on the obtained actual frequency of each refrigeration pump, the functional relationship between the frequency and power of each refrigeration pump, and the total number of the refrigeration pumps; Calculate the total power of the freezing pump after energy saving 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 rate of each freezing pump, the functional relationship between the flow rate 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; 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 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; The energy saving rate of the HVAC system is calculated based on the energy consumption side energy saving rate of the HVAC system and the energy supply side energy saving rate 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, configured 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 determining unit, configured to determine the operating conditions corresponding to the daily maximum temperatures and the number of days corresponding to the operating conditions, wherein the number of days corresponding to the operating conditions is the number of the daily maximum temperatures corresponding to the operating conditions; a second calculation unit, configured to calculate a host energy saving rate based on the obtained rated cooling capacity of each host under each of the operating conditions, a 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, configured to calculate a refrigeration pump energy saving rate based on the acquired actual frequency of each refrigeration pump, a functional relationship between the frequency and power of each refrigeration pump, a functional relationship between the frequency and flow rate of each refrigeration pump, a functional relationship between the flow rate and frequency of each refrigeration pump, a main pipe return water temperature of the refrigeration pump, a main pipe supply water temperature of the refrigeration pump, and a total number of the refrigeration pumps; a fourth calculation unit, configured to calculate a cooling pump energy saving rate based on the acquired actual frequency of each cooling pump, a functional relationship between the frequency and power of each cooling pump, a functional relationship between the frequency and flow rate of each cooling pump, a functional relationship between the flow rate and frequency of each cooling pump, a main pipe return water temperature of the cooling pump, a main pipe supply water temperature of the cooling pump, and a 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 main engine energy saving rate, the refrigeration pump energy saving rate, the cooling pump energy saving rate and the energy consumption side energy saving rate of the HVAC system.

8. A computer program product, characterized in that The method comprises computer-readable instructions, which, when executed on an electronic device, enable the electronic device to implement the method for calculating the energy saving rate of a HVAC system according to any one of claims 1 to 6.

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

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