Building cooling capacity regulation and control method, device and system and computer readable storage medium

Abstract

The invention relates to a building cooling capacity regulation and control method, device and system and a computer readable storage medium, and the building cooling capacity regulation and control method comprises the steps that the building cooling load variable quantity and the human body cooling load variable quantity in a room within a preset time period are obtained, and according to the sum of the building cooling load variable quantity and the human body cooling load variable quantity, the building cooling capacity is regulated and controlled; a room cold load variable quantity is obtained, and the human body cold load variable quantity represents a cold load change formed by human body heat dissipation; according to the room cold load variable quantity of each room, the floor cold load variable quantity is obtained, and according to the floor cold load variable quantity of each floor, the building cold load variable quantity is obtained; according to the room cold load variable quantity, first-level adjustment is conducted on the room, and according to the floor cold load variable quantity, second-level adjustment is conducted on the floor; the cold storage capacity of the cold storage device is adjusted according to the building cold load variable quantity, the refrigerating capacity of the refrigerating system is adjusted according to the cold storage variable quantity before and after adjustment, and therefore the problem that the refrigerating capacity adjusting precision of the refrigerating system is poor is solved.

Description

Technical Field

[0001] The present application relates to the field of cooling capacity control, and in particular to a building cooling capacity control method, device, system, computer equipment and computer-readable storage medium. Background Art

[0002] In summer, the temperature and humidity rise sharply, which can easily make people feel hot and uncomfortable. Air conditioning and other cooling equipment can reduce the indoor temperature in a short time, thereby improving people's comfort.

[0003] For large-scale cooling needs, such as office buildings, shopping malls and other public places, the cooling capacity regulation of the refrigeration system only relies on monitoring the changes in indoor air temperature. However, due to the flow of people indoors, the temperature changes, resulting in poor accuracy in the cooling capacity regulation of the refrigeration system. Summary of the invention

[0004] The embodiments of the present application provide a building cooling capacity control method, device, system and computer-readable storage medium to at least solve the problem of poor accuracy in regulating cooling capacity of a refrigeration system in the related art.

[0005] In a first aspect, an embodiment of the present application provides a building cooling capacity control method, characterized in that the method includes a cold storage device and a refrigeration system, including:

[0006] Obtaining a change in the building cooling load and a change in the human cooling load in the room within a preset time period, and obtaining a change in the room cooling load according to the sum of the change in the building cooling load and the change in the human cooling load, wherein the change in the human cooling load represents a change in the cooling load formed by human body heat dissipation;

[0007] According to the room cooling load change of each room, the floor cooling load change is obtained, and according to the floor cooling load change of each floor, the building cooling load change is obtained;

[0008] According to the change of room cooling load, the room is adjusted at the first level, and according to the change of floor cooling load, the floor is adjusted at the second level;

[0009] According to the change of the building's cooling load, the cooling capacity of the cooling storage device is adjusted, and the cooling capacity of the refrigeration system is adjusted according to the change of the cooling load before and after the adjustment.

[0010] In one embodiment, the room is regulated at the first level according to the change in the room cooling load, including:

[0011] Adjust the air volume in the room according to the change in the room's cooling load.

[0012] In one embodiment, according to the change in floor cooling load, two-level adjustment is performed on the floor, including:

[0013] Adjust the flow of chilled water on each floor according to the change in cooling load on that floor.

[0014] In one embodiment, the change in the building cooling load in the room within a preset time period satisfies the following formula:

[0015]

[0016] Among them, R a is the indoor air thermal resistance, C a is the indoor air heat capacity, R m is the indoor solid thermal resistance, C m is the indoor solid heat capacity, is the building cooling load, is the indoor air temperature at time t, is the indoor solid temperature at time t, is the outdoor air temperature at time t.

[0017] In one embodiment, the change in human body cooling load in the room within the preset time period is the difference between the human body cooling load obtained at the first moment and the human body cooling load obtained at the second moment.

[0018] The human cooling load in the room satisfies the following formula:

[0019]

[0020] in, The cooling load of the human body, is the clustering coefficient, n is the number of people at time t, p 1 is the sensible heat loss per hour for an adult, p 2 It is the latent heat dissipation per hour for an adult.

[0021] In one embodiment, it further includes:

[0022] Obtain the change in building cooling load and the current cooling capacity of the cooling device;

[0023] When the change in the building cooling load is greater than a preset threshold value, and the current cold storage capacity is less than or equal to the preset cold storage capacity, the refrigeration system is adjusted to the first operating condition, so that the cold storage device receives the cooling capacity of the refrigeration system until the cold storage capacity of the cold storage device reaches the target cold storage capacity, and based on the target required cooling capacity, the current operating condition is determined to be the second operating condition and the refrigeration system is maintained in the second operating condition; and / or

[0024] When the change in the building cooling load is greater than a preset threshold value and the current cooling capacity is greater than the preset cooling capacity, the operating condition of the refrigeration system is maintained at the second operating condition.

[0025] In one embodiment, after obtaining the change in the cooling load of the building and the current cooling capacity of the cooling storage device, the method further includes:

[0026] When the change in the building cooling load is less than or equal to a preset threshold, the refrigeration system is maintained in the second operating condition until the cold storage capacity of the cold storage device reaches the rated cold storage capacity, and the refrigeration system is adjusted to the third operating condition to reduce the cooling capacity of the refrigeration system.

[0027] In one embodiment, the method of determining the first operating condition and the third operating condition includes:

[0028] According to the historical operation data of the refrigeration system obtained in advance, a performance curve about the refrigeration capacity and the refrigeration efficiency is obtained, and the performance curve is a parabola, and the refrigeration capacity is used as the independent variable and the refrigeration efficiency is used as the dependent variable;

[0029] Based on the performance curve, determine the peak cooling efficiency and the target cooling efficiency lower than the peak cooling efficiency;

[0030] According to a first cooling capacity corresponding to the peak cooling efficiency, and a second cooling capacity and a third cooling capacity corresponding to the target cooling efficiency, the second cooling capacity is smaller than the third cooling capacity;

[0031] Determine that the operating condition in which the refrigeration capacity increases in the order of the second refrigeration capacity, the first refrigeration capacity, and the third refrigeration capacity is the first operating condition;

[0032] It is determined that the operating condition in which the refrigeration capacity decreases in the order of the third refrigeration capacity, the first refrigeration capacity, and the second refrigeration capacity is the third operating condition.

[0033] In one embodiment, the performance curves regarding cooling capacity and cooling efficiency satisfy the following formula:

[0034]

[0035] Where COP is the cooling efficiency, Q C is the cooling capacity, a 1 、b 1 , d are constants.

[0036] In a second aspect, an embodiment of the present application provides a building cooling capacity control device, comprising:

[0037] A first acquisition module is used to obtain a change in building cooling load and a change in human cooling load in a room within a preset time period, and obtain a change in room cooling load according to the sum of the change in building cooling load and the change in human cooling load, wherein the change in human cooling load represents a change in cooling load formed by human body heat dissipation;

[0038] The second acquisition module is used to obtain the floor cooling load change according to the room cooling load change of each room, and obtain the building cooling load change according to the floor cooling load change of each floor;

[0039] The first adjustment module is used to perform primary adjustment on the room according to the change in the room cooling load, and to perform secondary adjustment on the floor according to the change in the floor cooling load;

[0040] The second adjustment module is used to adjust the cold storage capacity of the cold storage device according to the change in the building's cold load, and to adjust the cooling capacity of the refrigeration system according to the change in the cold storage before and after the adjustment.

[0041] In a third aspect, an embodiment of the present application provides a computer device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the building cooling capacity control method as described in the first aspect above is implemented.

[0042] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the building cooling capacity control method as described in the first aspect above.

[0043] The building cooling capacity control method, device, system and computer-readable storage medium provided in the embodiments of the present application have at least the following technical effects.

[0044] By obtaining the change in the room building cooling load and the change in the human cooling load within a preset time period, and obtaining the room cooling load change based on the sum of the building cooling load change and the human cooling load change, and then obtaining the floor cooling load variable and the building cooling load change, the room is adjusted at the first level based on the room cooling load change, and the second level is adjusted based on the floor cooling load change. The cold storage capacity of the cold storage device is adjusted based on the building cooling load change, and then the cooling capacity of the refrigeration system is adjusted according to the front and rear cold storage changes, to achieve room-level, floor-level and building-level cooling capacity control, to achieve non-inductive and balanced room-level cooling capacity control, and precise and fast floor-level and building-level cooling capacity control, thereby achieving precise adjustment of the cooling capacity of the refrigeration system.

[0045] Details of one or more embodiments of the present application are set forth in the following drawings and description to make other features, objects, and advantages of the present application more readily apparent. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0047] Figure 1is a flow chart of a building cooling capacity control method according to an exemplary embodiment;

[0048] Figure 2 is a schematic diagram of a performance curve according to an exemplary embodiment;

[0049] Figure 3 is a schematic diagram of a process for controlling cooling capacity of a building according to an exemplary embodiment;

[0050] Figure 4 is a block diagram of a building cooling capacity control device according to an exemplary embodiment;

[0051] Figure 5 is a block diagram of an electronic device according to an exemplary embodiment. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. Based on the embodiments provided in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0053] Obviously, the drawings described below are only some examples or embodiments of the present application. For ordinary technicians in this field, the present application can also be applied to other similar scenarios based on these drawings without creative work. In addition, it can also be understood that although the efforts made in this development process may be complicated and lengthy, for ordinary technicians in this field related to the content disclosed in this application, some changes in design, manufacturing or production based on the technical content disclosed in this application are just conventional technical means, and should not be understood as insufficient content disclosed in this application.

[0054] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those of ordinary skill in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0055] Unless otherwise defined, the technical terms or scientific terms involved in this application should be understood by people with ordinary skills in the technical field to which this application belongs. The words "one", "a", "a", "the" and the like involved in this application do not indicate a quantitative limitation, and may represent the singular or plural. The terms "include", "comprise", "have" and any of their variations involved in this application are intended to cover non-exclusive inclusions; for example, a process, method, system, product or device that includes a series of steps or modules (units) is not limited to the listed steps or units, but may also include steps or units that are not listed, or may also include other steps or units inherent to these processes, methods, products or devices. The words "connect", "connected", "coupled" and the like involved in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The "multiple" involved in this application refers to two or more. "And / or" describes the association relationship of associated objects, indicating that there may be three relationships, for example, "A and / or B" can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects before and after are in an "or" relationship. The terms "first", "second", "third", etc. involved in this application are only used to distinguish similar objects and do not represent a specific ordering of the objects.

[0056] In a first aspect, an embodiment of the present application provides a method for controlling cooling capacity of a building. Figure 1 is a flow chart of a building cooling capacity control method according to an exemplary embodiment. Figure 1 As shown, the building cooling capacity control method includes:

[0057] Step S101, obtaining a change in the building cooling load and a change in the human cooling load in the room within a preset time period, and obtaining a change in the room cooling load according to the sum of the change in the building cooling load and the change in the human cooling load, wherein the change in the human cooling load represents a change in the cooling load caused by human body heat dissipation.

[0058] A human presence detection device and several temperature measuring devices are installed in the room. The temperature sensing measuring devices are dispersedly installed in the room and are used to detect the air temperature in the room and the solid temperature of the building. The human presence detection device is used to obtain the change of the number of people in the room. Optionally, the human presence detection device includes an infrared sensor and a radar sensor.

[0059] Based on the average value of the air temperature and solid temperature detected by the temperature measuring device in the room, the accuracy of the detected temperature is ensured. And the change in cooling capacity caused by building heat dissipation is obtained according to the formula of the equivalent thermal model of the space building, that is, the change in the building cooling load in the room within the preset time period satisfies the following formula:

[0060]

[0061] Among them, R a is the indoor air thermal resistance, C a is the indoor air heat capacity, R m is the indoor solid thermal resistance, C m is the indoor solid heat capacity, is the building cooling load, is the indoor air temperature at time t, is the indoor solid temperature at time t, is the outdoor air temperature at time t.

[0062] Since the change of people has a great impact on the size of the cooling load, and the flow of people is difficult to detect. Therefore, a human presence detection device is used to detect the change of the number of people in the room, and then the change of human cooling load is obtained. The change of human cooling load is the difference between the human cooling load in the room at the first moment and the human cooling load in the room at the second moment within the preset time, where the human cooling load in the room satisfies the following formula:

[0063]

[0064] in, The cooling load of the human body, is the clustering coefficient, n is the number of people at time t, p 1 is the sensible heat loss per hour for an adult, p 2 is the latent heat dissipation per hour of an adult. Optionally, the selection range of the clustering coefficient is greater than or greater than 0.95 and less than or equal to 1.

[0065] According to the above content, based on the data obtained by the temperature measurement device and the human presence detection device installed in the room, and the building cooling load change formula and the human cooling load formula, the room cooling load change of each room can be obtained, that is, the sum of the building cooling load change and the human cooling load change. Therefore, the room cooling load change satisfies:

[0066]

[0067] in, is the change in building cooling load within a certain period of time, is the change in cooling load of personnel within a certain period of time, It is the change of room cooling load of a room within a preset time. Optionally, the preset time includes 10 minutes, 15 minutes, and 20 minutes.

[0068] Based on the obtained changes in the building cooling load and the human cooling load in the room, the room cooling load change is further obtained, thereby fully considering the impact of the building thermal resistance and the changes in the internal heat source caused by the entry and exit of people, so that the cooling capacity of the refrigeration system can be accurately controlled according to the room cooling load change.

[0069] Step S102: Obtain a floor cooling load change according to the room cooling load change of each room, and obtain a building cooling load change according to the floor cooling load change of each floor.

[0070] Each room is provided with a room adjustment module, wherein the room adjustment module, the human presence detection device and the temperature measurement device are physically connected and can communicate with each other. The room adjustment module obtains the room cooling load change in the room according to the data of the temperature measurement device and the human presence detection device. Each floor is provided with a floor adjustment module, and the room adjustment module in the room on the same floor can transmit the room cooling load change of the room to the floor adjustment module. The floor adjustment module receives the room cooling load change of all rooms on the same floor, and takes the sum of the room cooling load change of all rooms as the floor cooling load change.

[0071] An equipment adjustment module is set in the refrigeration system of the building. The floor adjustment module of each floor in the building transmits the floor cooling load change of the corresponding floor to the equipment adjustment module, so that the equipment adjustment module receives the floor cooling load change of each floor in the building and uses the floor cooling load change of all floors as the building cooling load change.

[0072] The room adjustment module, floor adjustment module and equipment adjustment module obtain the room cooling load change, floor cooling load change and building cooling load change respectively, thus providing a basis for the three adjustment modules to control cooling capacity at room level, floor level and building level.

[0073] Step S103: Perform primary adjustment on the room according to the change in room cooling load, and perform secondary adjustment on the floor according to the change in floor cooling load.

[0074] The room adjustment module in the room adjusts the air volume in the room according to the obtained change in the room's cooling load to achieve primary control of the room. When the change in the room's cooling load is less than 0, the air volume in the room is reduced. When the change in the room's cooling load is greater than 0, the air volume in the room is increased. For example, the initial number of people in the room is 30, and then increases to 50 people. The cooling load of the room increases, and then the change in the room's cooling load is greater than 0, thereby increasing the air volume in the room to maintain the target temperature in the room. The room adjustment module adjusts the room's air volume based on the change in the room's cooling load, thereby controlling the room's temperature to maintain at the target temperature, achieving balanced control of the room's cooling capacity, and enhancing human comfort in the room.

[0075] The floor adjustment module of the floor adjusts the floor chilled water flow rate according to the obtained floor cooling load change to achieve secondary control of the floor. When the floor cooling load change is less than 0, the floor chilled water flow rate is reduced. When the floor cooling load change is greater than 0, the floor chilled water flow rate is increased. The floor adjustment module adjusts the floor chilled water flow rate based on the floor cooling load change, thereby adjusting the floor temperature to maintain at the target temperature, achieving accurate and rapid control of the floor cooling capacity.

[0076] Through the room adjustment module and the floor adjustment module, the first-level adjustment of the room cooling capacity and the second-level adjustment of the floor cooling capacity can be realized, thereby realizing precise adjustment of the room and floor cooling capacity.

[0077] Step S104: adjusting the cold storage capacity of the cold storage device according to the change in the building's cold load, and adjusting the cooling capacity of the refrigeration system according to the change in the cold storage capacity before and after the adjustment.

[0078] The equipment adjustment module determines the cooling capacity required by the building based on the obtained change in the cooling load of the building. If the change in the cooling load of the building is greater than 0, that is, the cooling load of the building increases within a preset period of time, indicating that the required cooling capacity is greater than the current cooling capacity, the first valve of the cold storage device is adjusted so that the cold storage device transmits the cold storage capacity to the floors in the building. When it is detected that the cold storage capacity in the cold storage device is less than the preset cold storage capacity, the second valve of the cold storage device is controlled to open so that the refrigeration system transmits the cooling capacity to the cold storage device until the cold storage capacity in the cold storage device reaches the target cold storage capacity. Among them, the first valve of the cold storage device is used to control the cold storage capacity of the cold storage device to flow to the building; the second valve of the cold storage device is used to control the cooling capacity of the refrigeration system to flow to the cold storage device. Optionally, the target cold storage capacity is 3 / 4 or 2 / 3 of the maximum cold storage capacity, so as to store the excess cooling capacity of the refrigeration system when the cold load of the building is reduced.

[0079] If the change in the building's cooling load is less than 0, that is, the building's cooling load decreases within a preset period of time, indicating that the current cooling capacity is greater than the required cooling capacity, the excess cooling capacity is stored in the cold storage device, and when the cold storage capacity of the cold storage device reaches the rated cold storage capacity, the second valve of the cold storage device is closed. The rated cold storage capacity is the maximum cold storage capacity that the cold storage device can accommodate.

[0080] By obtaining the change in the building's cooling load, the cooling capacity required by the building is determined, and based on the cooling capacity of the cooling device, if the cooling capacity is greater than or equal to the preset cooling capacity, the cooling capacity can be transmitted from the cooling device to the building to meet the cooling capacity required by the building. If the cooling capacity is less than the preset cooling capacity, the refrigeration device transmits cooling capacity to the cooling device, and then transmits the cooling capacity to the building through the cooling device to meet the cooling capacity required by the building, thereby achieving precise control of the cooling capacity of the building, reducing the extensive adjustment of the cooling capacity of the cooling system, avoiding the waste of cooling capacity and reducing the energy consumption of the cooling system.

[0081] In another embodiment, a performance curve regarding the cooling capacity and cooling efficiency is obtained based on pre-acquired historical operating data of the refrigeration system, wherein the historical operating data of the refrigeration system includes cooling capacity and power consumption. Figure 2 is a schematic diagram of a performance curve according to an exemplary embodiment. Figure 2 As shown, the performance curve is a parabola, with cooling capacity as the independent variable and cooling efficiency as the dependent variable. Among them, the performance curves of cooling capacity and cooling efficiency satisfy the following formula:

[0082]

[0083] Where COP is the cooling efficiency, Q C is the cooling capacity, a 1 、b 1 , d are constants.

[0084] Based on the performance curve, determine the peak cooling efficiency and the target cooling efficiency lower than the peak cooling efficiency. The target cooling efficiency lower than the peak cooling efficiency is selected according to the actual application requirements. Figure 2 As shown, the refrigeration efficiency of the refrigeration system is controlled between COP1 and COP2, where COP1 is the highest refrigeration efficiency and COP2 is the target refrigeration efficiency.

[0085] According to the first cooling capacity corresponding to the peak cooling efficiency, and the second cooling capacity and the third cooling capacity corresponding to the target cooling efficiency, and the second cooling capacity is less than the third cooling capacity. According to the performance curve, the operating condition in which the cooling capacity increases in the order of the second cooling capacity, the first cooling capacity and the third cooling capacity is determined as the first operating condition. According to the performance curve, the operating condition in which the cooling capacity decreases in the order of the third cooling capacity, the first cooling capacity and the second cooling capacity is determined as the third operating condition.

[0086] In one example, the operating condition of the command system is determined by the cold storage capacity of the cold storage device and the change in the building's cold load, so that the refrigeration system avoids frequent changes in the operating condition and maintains it in a better operating condition, which specifically includes the following steps:

[0087] Step S201, obtaining the change in building cooling load and the current cooling capacity of the cooling storage device.

[0088] The equipment adjustment module obtains the change in the building's cooling load and the current cooling capacity in the cooling storage device, and compares the change in the building's cooling load with the preset threshold, and the current cooling capacity with the preset cooling capacity, and adjusts the operating conditions of the refrigeration system according to the comparison results. It should be noted that the cooling storage device is used to store excess cooling capacity of the refrigeration system or to supplement the cooling capacity required by the building, and the maximum capacity of the cooling capacity of the cooling storage device can support the building to run for a preset operating time under the maximum cooling load, where the preset operating time includes 2 hours and 3 hours.

[0089] Step S202: When the change in the building cooling load is greater than a preset threshold value, and the current cold storage capacity is less than or equal to the preset cold storage capacity, the refrigeration system is adjusted to the first operating condition, so that the cold storage device receives the cooling capacity of the refrigeration system until the cold storage capacity of the cold storage device reaches the target cold storage capacity. Based on the target required cooling capacity, the current operating condition is determined to be the second operating condition and the refrigeration system is maintained in the second operating condition. And / or

[0090] The preset threshold is used to determine whether the building cooling load has changed. If the building cooling load change is greater than the preset threshold, it means that the building cooling load has increased and the cooling system needs to provide more cooling capacity.

[0091] The preset cold storage capacity is used to determine whether the cold storage capacity in the cold storage device can provide enough cold capacity for the building to meet the cold capacity required by the building. The equipment adjustment device obtains the current cold storage capacity of the cold storage device, and the current cold storage capacity is less than or equal to the preset cold storage capacity, which means that the current cold storage capacity of the cold storage device is insufficient to meet the cold capacity required by the building, so the refrigeration system needs to increase the cooling capacity, and thus the refrigeration system is adjusted to the first operating condition to increase the cooling capacity of the refrigeration system. And the increased cooling capacity of the refrigeration system is only used to supplement the cold storage capacity of the cold storage device. When the cold storage capacity in the cold storage device reaches the target cold storage capacity, the current operating condition is determined as the second operating condition, and the second operating condition is maintained for operation.

[0092] Step S203: When the change in the building cooling load is greater than a preset threshold value and the current cooling capacity is greater than a preset cooling capacity, the operating condition of the refrigeration system is maintained at the second operating condition.

[0093] When the change in the building's cooling load is greater than a preset threshold, it indicates that the building's cooling load has increased and the refrigeration system needs to provide more cooling capacity. The equipment adjustment module is used to obtain the current cooling capacity of the cold storage device. If the current cooling capacity is greater than the preset cooling capacity, it means that the cooling capacity of the cold storage device can meet the cooling capacity required by the building. The cold storage device then transfers the cooling capacity to the building to meet the cooling capacity required by the building. At this point, the operating condition of the refrigeration system is still maintained in the second operating condition, and the cooling capacity required by the building is only supplemented by the cold storage device through the cooling capacity.

[0094] In one example, when the change in the building cooling load is less than or equal to a preset threshold, the refrigeration system is maintained in the second operating condition until the cold storage capacity of the cold storage device reaches the rated cold storage capacity, and the refrigeration system is adjusted to the third operating condition to reduce the cooling capacity of the refrigeration system.

[0095] When the change in the building's cooling load is less than or equal to the preset threshold, it means that the building's cooling load has decreased, and the cooling capacity provided by the refrigeration system is greater than the cooling capacity required by the building. The refrigeration system is still in the second operating condition, and in the second operating condition, the excess cooling capacity is transferred to the cold storage device so that the cold storage capacity of the cold storage device reaches the rated cold storage capacity. When the equipment adjustment device obtains that the cold storage capacity of the cold storage device is the rated cold storage capacity, the refrigeration system is adjusted to the third operating condition to reduce the cooling capacity.

[0096] Figure 3 is a schematic diagram of a process flow of controlling building cooling capacity according to an exemplary embodiment, such as Figure 3 As shown, the direction of the data flow is the direction in which the equipment adjustment module, the floor adjustment module and the room adjustment module obtain the corresponding cold load change, and the regulating valves controlled by different adjustment modules. For example, the cold load change of room 1 to room N is transmitted by the respective room adjustment modules to the floor adjustment module of the corresponding floor, and the cold load change of floor 1 to floor N is transmitted by the floor adjustment module of each floor to the equipment adjustment module, so that the equipment adjustment module obtains the cold load change of the building. If the cold load change of the building obtained in the equipment adjustment module is greater than the preset threshold value, and the cold storage capacity in the cold storage device is greater than the preset cold storage capacity, the first valve is opened to allow the cold storage capacity of the cold storage device to flow to the floor of the building.

[0097] like Figure 3 As shown in the figure, the direction of energy flow is the cooling capacity of the refrigeration system and the cold storage capacity of the cold storage system. For example, the refrigeration system transmits 300W (watt, W) of cooling capacity to the building, and the change in the building's cooling load is greater than the preset threshold, the cooling capacity required by the building is 400W, and the cold storage capacity of the cold storage device is less than the preset cold storage capacity, then the refrigeration system increases the cooling capacity and transmits the increased cooling capacity of 100W to the cold storage device until the cold storage capacity in the cold storage device reaches the target cold storage capacity.

[0098] In summary, the building cooling capacity control method provided in the embodiment of the present application obtains the room cooling load change, the floor cooling load change and the floor cooling load change, and respectively adjusts the cooling capacity of the room, floor and building through the room adjustment module, the floor adjustment module and the equipment adjustment module, thereby realizing three-level control of the building cooling capacity and completing precise control of the building cooling capacity. In addition, the equipment adjustment module completes the replenishment of the building cooling capacity through the cooling capacity of the cooling storage device according to the building cooling load change and the cooling capacity of the cooling storage device, so that the refrigeration system is maintained in a stable working condition, changing the situation in which the refrigeration system frequently changes the working condition according to the cooling capacity change, thereby improving the operating efficiency and service life of the refrigeration system.

[0099] In a second aspect, an embodiment of the present application provides a building cooling capacity control device. Figure 4 FIG. 1 is a block diagram of a building cooling capacity control device according to an exemplary embodiment. Figure 4 As shown, the building cooling control device includes:

[0100] The first acquisition module acquires the change amount of the building cooling load and the change amount of the human cooling load in the room within a preset time period, and obtains the change amount of the room cooling load according to the sum of the change amount of the building cooling load and the change amount of the human cooling load, wherein the change amount of the human cooling load represents the change of the cooling load formed by the heat dissipation of the human body;

[0101] The second acquisition module is used to obtain the floor cooling load change according to the room cooling load change of each room, and obtain the building cooling load change according to the floor cooling load change of each floor;

[0102] A first regulating module is used to perform primary regulation on the room according to the variation of the room cooling load, and to perform secondary regulation on the floor according to the variation of the floor cooling load;

[0103] The second adjustment module is used to adjust the cold storage capacity of the cold storage device according to the change in the building's cold load, and to adjust the cooling capacity of the refrigeration system according to the change in the cold storage before and after the adjustment.

[0104] To summarize, the building cooling capacity control device provided by the present application, in the first acquisition module, obtains the room building cooling load change and the human cooling load change within a preset time period, and obtains the room cooling load change based on the sum of the building cooling load change and the human cooling load change. In the second acquisition module, the floor cooling load variable and the building cooling load change are further obtained. In the first adjustment module, the room is adjusted at the first level based on the room cooling load change, and the second level is adjusted based on the floor cooling load change; in the second adjustment module, the cold storage capacity of the cold storage device is adjusted based on the building cooling load change, and then the cooling capacity of the refrigeration system is adjusted according to the front and rear cold storage changes, to achieve room-level, floor-level and building-level cooling capacity control, so as to achieve non-inductive and balanced room-level cooling capacity control, and precise and rapid floor-level and building-level cooling capacity control, thereby achieving precise adjustment of the cooling capacity of the refrigeration system.

[0105] It should be noted that the building cooling capacity control device provided in this embodiment is used to implement the above-mentioned implementation mode, and the descriptions that have been made will not be repeated. As used above, the terms "module", "unit", "subunit" and the like can be a combination of software and / or hardware that implements a predetermined function. Although the device described in the above embodiment is preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceivable.

[0106] In a third aspect, an embodiment of the present application provides an electronic device, Figure 5 FIG. 1 is a block diagram of an electronic device according to an exemplary embodiment. Figure 5 As shown, the electronic device may include a processor 81 and a memory 82 storing computer program instructions.

[0107] Specifically, the processor 81 may include a central processing unit (CPU), or an application specific integrated circuit (ASIC), or may be configured to implement one or more integrated circuits of the embodiments of the present application.

[0108] Among them, the memory 82 may include a large-capacity memory for data or instructions. By way of example and not limitation, the memory 82 may include a hard disk drive (HDD), a floppy disk drive, a solid-state drive (SSD), a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a universal serial bus (USB) drive, or a combination of two or more of these. Where appropriate, the memory 82 may include a removable or non-removable (or fixed) medium. Where appropriate, the memory 82 may be inside or outside the data processing device. In a specific embodiment, the memory 82 is a non-volatile memory. In a specific embodiment, the memory 82 includes a read-only memory (ROM) and a random access memory (RAM). Where appropriate, the ROM may be a mask-programmed ROM, a programmable ROM (Programmable Read-Only Memory, PROM for short), an erasable PROM (ErasableProgrammable Read-Only Memory, EPROM for short), an electrically erasable PROM (Electrically ErasableProgrammable Read-Only Memory, EEPROM for short), an electrically alterable ROM (ElectricallyAlterableRead-Only Memory, EAROM for short) or a flash memory (FLASH) or a combination of two or more of these. Under appropriate circumstances, the RAM can be a static random access memory (SRAM) or a dynamic random access memory (DRAM), wherein the DRAM can be a fast page mode dynamic random access memory (FPMDRAM), an extended data output dynamic random access memory (EDODRAM), a synchronous dynamic random access memory (SDRAM), etc.

[0109] The memory 82 may be used to store or cache various data files required for processing and / or communication, as well as possible computer program instructions executed by the processor 81 .

[0110] The processor 81 reads and executes the computer program instructions stored in the memory 82 to implement any one of the building cooling capacity control methods in the above embodiments.

[0111] In one embodiment, the building cooling capacity control device may further include a communication interface 83 and a bus 80. Figure 5 As shown, the processor 81, the memory 82, and the communication interface 83 are connected via a bus 80 and communicate with each other.

[0112] The communication interface 83 is used to implement communication between the modules, devices, units and / or equipment in the embodiment of the present application. The communication port 83 can also implement data communication with other components such as: external devices, image / data acquisition equipment, databases, external storage, and image / data processing workstations.

[0113] The bus 80 includes hardware, software or both, and couples the components of the building cooling control equipment to each other. The bus 80 includes but is not limited to at least one of the following: data bus (DataBus), address bus (Address Bus), control bus (Control Bus), expansion bus (ExpansionBus), local bus (Local Bus). By way of example and not limitation, bus 80 may include an Accelerated Graphics Port (AGP) or other graphics bus, an Extended Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a HyperTransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an InfiniBand interconnect, a Low Pin Count (LPC) bus, a memory bus, a Micro Channel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a Video Electronics Standards Association Local Bus (VLB) bus, or other suitable buses, or a combination of two or more of the above. Bus 80 may include one or more buses, where appropriate. Although embodiments of the present application describe and illustrate a particular bus, the present application contemplates any suitable bus or interconnect.

[0114] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium having a program stored thereon, and when the program is executed by a processor, the building cooling capacity control method provided in the first aspect is implemented.

[0115] The readable storage medium may include but is not limited to: a portable disk, a hard disk, a random access memory, a read-only memory, an erasable programmable read-only memory, an optical storage device, a magnetic storage device or any suitable combination of the above.

[0116] In a possible implementation, the present invention can also be implemented in the form of a program product, which includes a program code. When the program product is run on a terminal device, the program code is used to enable the terminal device to execute the steps of the building cooling capacity control method provided in the first aspect.

[0117] The program code for executing the present invention may be written in any combination of one or more programming languages, and may be executed entirely on a user device, partially on a user device, as an independent software package, partially on a user device and partially on a remote device, or entirely on a remote device.

[0118] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0119] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A building cooling capacity control method, characterized in that: The method includes a cold storage device and a refrigeration system, including: Obtaining a change in the building cooling load and a change in the human cooling load in the room within a preset time period, and obtaining a change in the room cooling load according to the sum of the change in the building cooling load and the change in the human cooling load, wherein the change in the human cooling load represents a change in the cooling load formed by human body heat dissipation; According to the room cooling load change of each room, the floor cooling load change is obtained, and according to the floor cooling load change of each floor, the building cooling load change is obtained; According to the change in the room cooling load, the room is adjusted in the first level, and according to the change in the floor cooling load, the floor is adjusted in the second level; According to the change in the building's cooling load, the cooling capacity of the cooling storage device is adjusted, and according to the change in the cooling load before and after the adjustment, the cooling capacity of the refrigeration system is adjusted.

2. The building cooling capacity control method according to claim 1, characterized in that: The step of performing primary adjustment on the room according to the change in the room cooling load comprises: The air volume of the room is adjusted according to the change in the cooling load of the room.

3. The building cooling capacity control method according to claim 1, characterized in that: The step of performing secondary adjustment on the floor according to the change in the floor cooling load comprises: The flow rate of the floor chilled water is adjusted according to the change in the floor cooling load.

4. The building cooling capacity control method according to claim 1, characterized in that: The change in the building cooling load in the room within the preset time period satisfies the following formula: Among them, R a is the indoor air thermal resistance, C a is the indoor air heat capacity, R m is the indoor solid thermal resistance, C m is the indoor solid heat capacity, is the building cooling load, is the indoor air temperature at time t, is the indoor solid temperature at time t, is the outdoor air temperature at time t.

5. The building cooling capacity control method according to claim 1, characterized in that: The change in human body cooling load in the room within the preset time period is the difference between the human body cooling load obtained at the first moment and the human body cooling load obtained at the second moment. The human cooling load in the room satisfies the following formula: in, The cooling load of the human body, is the clustering coefficient, n is the number of people at time t, p1 is the sensible heat dissipation of an adult per hour, and p2 is the latent heat dissipation of an adult per hour.

6. The building cooling capacity control method according to claim 1, further comprising: Obtaining the change in the building's cooling load and the current cooling capacity of the cooling storage device; When the change in the building cooling load is greater than the preset threshold value, and the current cold storage capacity is less than or equal to the preset cold storage capacity, the refrigeration system is adjusted to the first operating condition so that the cold storage device receives the cooling capacity of the refrigeration system until the cold storage capacity of the cold storage device reaches the target cold storage capacity, and based on the target required cold capacity, the current operating condition is determined to be the second operating condition and the refrigeration system is maintained to operate in the second operating condition; and / or When the change in the building cooling load is greater than a preset threshold, and the current cold storage capacity is greater than a preset cold storage capacity, the operating condition of the refrigeration system is maintained at the second operating condition.

7. The building cooling capacity control method according to claim 6, characterized in that: After obtaining the change in the building cooling load and the current cooling capacity of the cooling storage device, the method further includes: When the change in the building cooling load is less than or equal to the preset threshold, the refrigeration system is maintained in the second operating condition until the cold storage capacity of the cold storage device reaches the rated cold storage capacity, and the refrigeration system is adjusted to the third operating condition to reduce the cooling capacity of the refrigeration system.

8. The building cooling capacity control method according to claim 7, characterized in that: The method of determining the first operating condition and the third operating condition includes: According to the historical operation data of the refrigeration system acquired in advance, a performance curve about the refrigeration capacity and the refrigeration efficiency is obtained, wherein the performance curve is a parabola, and the refrigeration capacity is used as an independent variable and the refrigeration efficiency is used as a dependent variable; Based on the performance curve, determining a refrigeration efficiency peak value and a target refrigeration efficiency lower than the refrigeration efficiency peak value; According to a first cooling capacity corresponding to the cooling efficiency peak value, and a second cooling capacity and a third cooling capacity corresponding to the target cooling efficiency, the second cooling capacity is smaller than the third cooling capacity; determining that an operating condition in which the refrigeration capacity increases in the order of the second refrigeration capacity, the first refrigeration capacity, and the third refrigeration capacity is the first operating condition; It is determined that the operating condition in which the refrigeration capacity decreases in the order of the third refrigeration capacity, the first refrigeration capacity, and the second refrigeration capacity is the third operating condition.

9. The building cooling capacity control method according to claim 8, characterized in that: The performance curves for cooling capacity and cooling efficiency satisfy the following formula: Where COP is the cooling efficiency, Q C is the cooling capacity, a1, b1, d are constants.

10. A building cooling capacity control device, characterized in that: include: The first acquisition module acquires the change amount of the building cooling load and the change amount of the human cooling load in the room within a preset time period, and obtains the change amount of the room cooling load according to the sum of the change amount of the building cooling load and the change amount of the human cooling load, wherein the change amount of the human cooling load represents the change of the cooling load formed by the heat dissipation of the human body; The second acquisition module is used to obtain the floor cooling load change according to the room cooling load change of each room, and obtain the building cooling load change according to the floor cooling load change of each floor; A first regulating module is used to perform primary regulation on the room according to the variation of the room cooling load, and to perform secondary regulation on the floor according to the variation of the floor cooling load; The second adjustment module is used to adjust the cold storage capacity of the cold storage device according to the change in the building's cold load, and to adjust the cooling capacity of the refrigeration system according to the change in the cold storage before and after the adjustment.

11. An electronic device, characterized in that: It comprises a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the building cooling capacity control method as described in any one of claims 1 to 9 is implemented.

12. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the building cooling capacity control method according to any one of claims 1 to 9 is implemented.

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