A laboratory heat and cold recovery system and method

Abstract

The application discloses a laboratory cold and heat recovery system and method, a cold and heat source generation side loop exchanges heat with an application side loop through a heat exchange module, a loop conversion module conducts a passage between the heat exchange module and the loop conversion module, and cold or heat is stored through a first water tank of the application side loop; in an application side self-circulation mode, the loop conversion module conducts a passage between a first output end and a first input end, a self-circulation passage is formed between the first water tank and the loop conversion module, and the application side can realize cold supply or heat supply by using the stored cold or heat of the first water tank. Thus, the cold or heat generated in an experiment process can be recovered, energy can be stored and utilized through the energy storage mode, energy waste is avoided, and the energy utilization efficiency is improved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of air-source heat pump cooling and heating technology, and in particular to a laboratory heat recovery system and method. Background Technology

[0002] During the research process in schools, enterprises and other research institutions, excess cold or heat is generated. This energy usually needs to be neutralized by equipment such as electric heating, chillers or cooling towers. This not only increases the maintenance costs of these devices, but also wastes cold or heat resources and reduces energy utilization efficiency. Summary of the Invention

[0003] This invention provides a laboratory cold and heat recovery system and method, which recovers the cold or heat generated during the experiment, stores and utilizes the energy through energy storage, avoids energy waste, and improves energy utilization efficiency.

[0004] In a first aspect, embodiments of the present invention provide a laboratory heat recovery system, comprising: a heat source generation side loop, an application side loop, and a heat exchange module; the heat source generation side loop and the application side loop exchange heat through the heat exchange module.

[0005] The laboratory's heat source and cold source are located in the circuit on the heat source and cold source generating side;

[0006] The application-side loop includes a first water tank and a loop conversion module; the heat exchange module is connected to the loop conversion module; the loop conversion module includes a first output terminal and a first input terminal; the first output terminal is connected to the first water tank, and the first water tank is connected to the first input terminal;

[0007] The loop conversion module is used to connect the heat exchange module and the loop conversion module in the cold or heat recovery mode. The coolant of the application side loop passes through the first input terminal, is heat exchanged and recovered by the heat exchange module, and is then output to the first water tank from the first output terminal. The first water tank stores the cold or heat.

[0008] The circuit conversion module is used to open the path between the first output terminal and the first input terminal in the application-side self-circulation mode. The coolant of the application-side circuit is directly output from the first output terminal through the first input terminal, and returns to the first input terminal after passing through the first water tank, forming a self-circulation path.

[0009] Optionally, the laboratory heat recovery system further includes a first sensing unit and a second sensing unit. The first sensing unit is disposed in the heat source generation side circuit and is used to detect a first temperature in the heat source generation side circuit. The second sensing unit is connected to the first water tank and is used to detect a second temperature of the coolant in the first water tank.

[0010] Optionally, the laboratory heat recovery system further includes a hot and cold water unit and a third sensing unit. The hot and cold water unit is located between the first output end and the first water tank, and the third sensing unit is located on the input side of the hot and cold water unit. The third sensing unit is used to detect the third temperature of the coolant on the input side of the hot and cold water unit, and the hot and cold water unit is used to control the output of the cold or heat in the application-side loop according to the third temperature.

[0011] Optionally, the loop switching module includes a first switching unit, a second switching unit, and a third switching unit;

[0012] The first end of the first switching unit is connected to the heat exchange module, and the second end of the first switching unit serves as the first input end; the first end of the second switching unit is connected to the heat exchange module, and the second end of the second switching unit serves as the first output end; the first end of the third switching unit is connected to the second end of the first switching unit, and the second end of the third switching unit is connected to the second end of the second switching unit.

[0013] In the cold or heat recovery mode, the first and second switching units are in the on state, and the third switching unit is in the off state; in the application-side self-circulation mode, the first and second switching units are in the off state, and the third switching unit is in the on state.

[0014] Optionally, the circuit switching module further includes a fourth switching unit; the first end of the fourth switching unit is connected to the second end of the first switching unit, and the second end of the fourth switching unit is connected to the first water tank.

[0015] Optionally, the cold and heat source generating side circuit includes a second water tank and a first driving unit. The heat exchange module is connected to the second water tank, the second water tank is connected to the first driving unit, the first driving unit is connected to the cold and heat source of the laboratory, and the cold and heat source of the laboratory is connected to the heat exchange module.

[0016] Optionally, the application-side circuit includes a second drive unit, which is disposed between the first water tank and the first input terminal.

[0017] Optionally, the heat exchange module adopts a plate heat exchanger.

[0018] Secondly, embodiments of the present invention provide a laboratory heat recovery method, executed by a laboratory heat recovery system, the laboratory heat recovery system comprising: a heat source generation side loop, an application side loop, and a heat exchange module; the heat source generation side loop and the application side loop exchange heat through the heat exchange module; the laboratory heat source is located in the heat source generation side loop; the application side loop includes a first water tank and a loop conversion module; the heat exchange module is connected to the loop conversion module; the loop conversion module includes a first output terminal and a first input terminal; the first output terminal is connected to the first water tank, and the first water tank is connected to the first input terminal;

[0019] The method includes:

[0020] In the cold or heat recovery mode, the circuit conversion module connects the heat exchange module and the circuit conversion module. The coolant of the application side circuit is input through the first input terminal, undergoes heat exchange through the heat exchange module, and is output through the first output terminal. The cold or heat is stored in the first water tank.

[0021] In the application-side self-circulation mode, the circuit conversion module only opens the path between the first output terminal and the first input terminal. The coolant in the application-side circuit is input through the first input terminal, output from the first output terminal, and returns to the first input terminal after passing through the first water tank, forming a self-circulation path.

[0022] Optionally, the laboratory heat recovery system further includes a first sensing unit and a second sensing unit. The first sensing unit is disposed in the heat source generation side circuit and is used to detect a first temperature in the heat source generation side circuit. The second sensing unit is disposed in the first water tank and is used to detect a second temperature of the coolant in the first water tank.

[0023] The method includes:

[0024] When the cold or heat source in the laboratory provides cold or heat, the system enters either the cold or heat recovery mode or the application-side self-circulation mode, depending on the relationship between the first temperature and the second temperature.

[0025] The laboratory heat recovery system provided in this invention involves heat exchange between the heat source generation loop and the application loop via a heat exchange module. A loop conversion module connects the heat exchange module and the loop conversion module. The first water tank in the application loop stores the cold or heat energy. In the application-side self-circulation mode, the loop conversion module connects the first output terminal and the first input terminal, forming a self-circulation path between the first water tank and the loop conversion module. The application side can then utilize the cold or heat energy stored in the first water tank for cooling or heating. This system recovers the cold or heat energy generated during experiments, storing and utilizing energy through energy storage, avoiding energy waste, and improving energy efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a laboratory heat recovery system provided in an embodiment of the present invention;

[0027] Figure 2 A schematic diagram of another laboratory heat recovery system provided in an embodiment of the present invention;

[0028] Figure 3 A schematic diagram of another laboratory heat recovery system provided in an embodiment of the present invention;

[0029] Figure 4 A schematic diagram of another laboratory heat recovery system provided in an embodiment of the present invention;

[0030] Figure 5 This is a schematic flowchart of a laboratory heat recovery method provided in an embodiment of the present invention. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Figure 1 This is a schematic diagram of a laboratory heat recovery system provided in an embodiment of the present invention. (See attached diagram.) Figure 1 It includes: a cold and heat source generating side loop 110, an application side loop 120, and a heat exchange module 130; the cold and heat source generating side loop 110 and the application side loop 120 exchange heat through the heat exchange module 130.

[0033] The laboratory's heat source 111 is located in the heat source generation side circuit 110;

[0034] The application-side loop 120 includes a first water tank 122 and a loop conversion module 121; the heat exchange module 130 is connected to the loop conversion module 121; the loop conversion module 121 includes a first output terminal and a first input terminal; the first output terminal is connected to the first water tank 122, and the first water tank 122 is connected to the first input terminal.

[0035] The loop conversion module 121 is used to open the passage between the heat exchange module 130 and the loop conversion module 121 in the cold or heat recovery mode. The coolant of the application side loop 120 passes through the first input terminal, is heat exchanged and recovered by the heat exchange module 130, and is then output to the first water tank 122 through the first output terminal. The cold or heat is stored in the first water tank 122.

[0036] The loop conversion module 121 is used to open the passage between the first output terminal and the first input terminal in the application-side self-circulation mode. The coolant of the application-side loop 120 is directly output from the first output terminal through the first input terminal, and returns to the first input terminal after passing through the first water tank 122, forming a self-circulation passage.

[0037] Specifically, the laboratory's heat source 111 refers to the energy source generated by the testing equipment itself during the experiment, or the energy source generated by other equipment to heat or cool the testing equipment during the experiment. In other words, the laboratory's heat source 111 can output surplus heat or cold. The heat source generation side loop 110 is the loop containing the laboratory's heat source 111, and it can transfer the heat or cold output from the laboratory's heat source 111 to the heat exchange module 130. Through the heat exchange module 130, heat is exchanged with the coolant in the application side loop 120, allowing the application side to utilize this energy and improve energy efficiency. The application side can include activity areas requiring heating or cooling, such as office areas, canteen areas, and leisure areas.

[0038] The application-side loop 120 serves as both a heat or cold energy recovery loop and an application-side heat or cold energy transfer loop. The application-side loop 120 includes a first water tank 122 and a loop conversion module 121. The first water tank 122 has a heat preservation function. The input end of the first water tank 122 is connected to the first output end of the loop conversion module 121, and the output end of the first water tank 122 is connected to the first input end of the loop conversion module 121. A circulation path is formed between the first water tank 122 and the loop conversion module 121. It should be noted that the connection relationship in the above embodiments can be a direct pipe connection or an indirect pipe connection. For example, in some embodiments, to improve the flow power of the coolant, a corresponding drive unit is provided between the output end of the first water tank 122 and the first input end of the loop conversion module 121. For example, the drive unit is a water pump, which increases the flow power of the coolant. In this case, the output end of the first water tank 122 and the first input end of the loop conversion module 121 are indirectly connected.

[0039] The cold or heat recovery mode is a working mode of the laboratory cold or heat recovery system, which stores the remaining cold or heat output from the laboratory's cold or heat source 111. In the cold or heat recovery mode, the cold or heat from the laboratory's cold or heat source 111 enters the heat exchange module 130 through the cold or heat source generating side loop 110. The coolant in the application side loop 120 recovers heat through the heat exchange module 130. The loop conversion module 121 connects the passage between the heat exchange module 130 and the loop conversion module 121. At this time, the coolant in the application side loop 120 can be output to the first water tank 122, where the cold or heat is stored.

[0040] The application-side self-circulation mode is a working mode of the laboratory heat recovery system. It utilizes the cooling or heating energy stored in the first water tank 122 to provide cooling or heating to the application side through self-circulation. In this mode, the loop conversion module 121 only connects the path between the first output terminal and the first input terminal. The coolant in the application-side loop 120 passes through the first input terminal, is directly output from the first output terminal, passes through the first water tank 122, and returns to the first input terminal, forming a self-circulation path. Therefore, the application side can utilize the cooling or heating energy stored in the first water tank 122 to achieve cooling or heating.

[0041] The laboratory heat recovery system provided in this embodiment of the invention involves a heat exchange module 130 on the heat source generation side (circuit 110) exchanging heat with an application side (circuit 120). A circuit conversion module 121 connects the heat exchange module 130 and the circuit conversion module 121. The system stores cold or heat energy through a first water tank 122 in the application side (circuit 120). In the application side self-circulation mode, the circuit conversion module 121 connects the first output terminal and the first input terminal, forming a self-circulation path between the first water tank 122 and the circuit conversion module 121. The application side can utilize the cold or heat energy stored in the first water tank 122 to provide cooling or heating. This system recovers the cold or heat energy generated during experiments, storing and utilizing energy through energy storage, avoiding energy waste, and improving energy utilization efficiency.

[0042] Based on the above embodiments, see below. Figure 1 The laboratory heat recovery system also includes a first sensing unit 140 and a second sensing unit 150. The first sensing unit 140 is located in the heat source generation side circuit 110 and is used to detect the first temperature of the heat source generation side circuit 110. The second sensing unit 150 is connected to the first water tank 122 and is used to detect the second temperature of the coolant in the first water tank 122.

[0043] Specifically, the first temperature can represent the temperature of the coolant in the heat source generating side loop 110. The first sensing unit 140 can be located on the output side of the heat source 111 in the laboratory, or on the input side of the heat exchange module 130. Therefore, the first sensing unit 140 can detect the temperature of the coolant entering the heat exchange module 130. The second temperature can represent the temperature inside the first water tank 122, that is, the energy storage temperature of the application side loop 120.

[0044] Therefore, based on the relationship between the first temperature and the second temperature, the laboratory heat recovery system can be controlled to enter either heat recovery mode or application-side self-circulation mode.

[0045] For example, in cooling mode, if the first temperature is lower than the second temperature, and the difference between the first and second temperatures also meets the requirements (e.g., the first temperature is lower than the second temperature, and the difference between the first and second temperatures is greater than 3°C), it indicates that the cold energy generated by the laboratory's heat source 111 is relatively large. The laboratory's heat recovery system then enters the cold energy recovery mode. The cold energy from the laboratory's heat source 111 enters the heat exchange module 130 through the heat source generation side loop 110. The coolant in the application side loop 120 exchanges heat through the heat exchange module 130, thus recovering the cold energy. The loop conversion module 121 connects the heat exchange module 130 and the loop conversion module 121. At this time, the coolant in the application side loop 120 can be output to the first water tank 122, where the cold energy is stored. When the first and second temperatures approach equality, or the difference between them is within a preset range, the loop conversion module 121 can disconnect the connection with the heat exchange module 130, thereby stopping heat exchange.

[0046] Similarly, in heating mode, if the first temperature is greater than the second temperature, and the difference between the first and second temperatures also meets the requirements (e.g., the first temperature is greater than the second temperature, and the difference between the first and second temperatures is greater than 3°C), it indicates that the heat generated by the laboratory's heat source 111 is relatively large, and the heat recovery mode can be entered. The heat from the laboratory's heat source 111 enters the heat exchange module 130 through the heat source generation side loop 110. The coolant in the application side loop 120 exchanges heat through the heat exchange module 130, achieving heat recovery. The loop conversion module 121 connects the heat exchange module 130 and the loop conversion module 121. At this time, the coolant in the application side loop 120 can be output to the first water tank 122, where the heat is stored. When the first and second temperatures approach equality, or the difference between them is within a preset range, the loop conversion module 121 can disconnect the connection with the heat exchange module 130, thereby stopping heat exchange.

[0047] In cooling mode, if the first temperature is greater than the second temperature, or if the first temperature is less than the second temperature but the difference between the two temperatures is less than 2°C, it indicates that the cooling capacity stored in the first water tank 122 is superior to the cooling capacity generated by the laboratory's heat source 111. In this case, the application-side self-circulation mode can be entered. The loop conversion module 121 only connects the path between the first output terminal and the first input terminal. The coolant in the application-side loop 120 passes through the first input terminal, is directly output from the first output terminal, passes through the first water tank 122, and returns to the first input terminal, forming a self-circulation path. Therefore, the application side can utilize the cooling capacity stored in the first water tank 122 to achieve cooling.

[0048] Similarly, in heating mode, if the first temperature is lower than the second temperature, or if the first temperature is higher than the second temperature but the difference between the two temperatures is less than 2°C, it indicates that the heat stored in the first water tank 122 is superior to the heat generated by the laboratory's heat source 111. In this case, the application-side self-circulation mode can be entered. The loop conversion module 121 only connects the path between the first output terminal and the first input terminal. The coolant in the application-side loop 120 passes through the first input terminal, is directly output from the first output terminal, passes through the first water tank 122, and returns to the first input terminal, forming a self-circulation path. Therefore, the application side can utilize the heat stored in the first water tank 122 to achieve heating.

[0049] Figure 2 A schematic diagram of another laboratory heat recovery system provided in this embodiment of the invention is shown below. Figure 2 The laboratory heat recovery system also includes a chiller unit 160 and a third sensing unit 170. The chiller unit 160 is located between the first output terminal and the first water tank 122, and the third sensing unit 170 is located on the input side of the chiller unit 160. The third sensing unit 170 is used to detect the third temperature of the coolant on the input side of the chiller unit 160, and the chiller unit 160 is used to control the output of cooling or heating in the application-side loop 120 according to the third temperature.

[0050] Specifically, the chiller unit 160 is a device capable of simultaneously generating chilled and hot water. It primarily utilizes heat pump technology to transfer and convert heat energy, thereby providing cooling and heating functions. The chiller unit 160 is positioned between the first output terminal and the first water tank 122. This means that the coolant passes through the chiller unit 160 before entering the first water tank 122. Based on the cooling or heating needs of the application side, the temperature of the coolant can be controlled by starting and stopping the chiller unit 160, thus adjusting the output of cooling or heating capacity in the application-side loop 120. The start-stop control of the chiller unit 160 can be adjusted based on the relationship between the third temperature and the preset temperature. For example, in cooling mode, it starts when the third temperature is ≥12℃ to provide auxiliary cooling and stops when the third temperature is <10℃, saving energy. In heating mode, it starts when the third temperature is ≤38℃ to provide auxiliary heating and stops when the third temperature is >40℃, saving energy.

[0051] Figure 3 A schematic diagram of another laboratory heat recovery system provided in this embodiment of the invention is shown below. Figure 3 The circuit switching module 121 includes a first switching unit K1, a second switching unit K2, and a third switching unit K3;

[0052] The first end of the first switching unit K1 is connected to the heat exchange module 130, and the second end of the first switching unit K1 serves as the first input end; the first end of the second switching unit K2 is connected to the heat exchange module 130, and the second end of the second switching unit K2 serves as the first output end; the first end of the third switching unit K3 is connected to the second end of the first switching unit K1, and the second end of the third switching unit K3 is connected to the second end of the second switching unit K2.

[0053] In the cold or heat recovery mode, the first switch unit K1 and the second switch unit K2 are in the on state, and the third switch unit K3 is in the off state; in the application-side self-circulation mode, the first switch unit K1 and the second switch unit K2 are in the off state, and the third switch unit K3 is in the on state.

[0054] Specifically, in cooling mode, if the first temperature is lower than the second temperature, and the difference between the first and second temperatures also meets the requirements (e.g., the first temperature is lower than the second temperature, and the difference between the first and second temperatures is greater than 3°C), it indicates that the cold energy generated by the laboratory's heat source 111 is relatively large, and the cold energy recovery mode is entered. The cold energy from the laboratory's heat source 111 enters the heat exchange module 130 through the heat source generation side loop 110. The coolant in the application side loop 120 exchanges heat through the heat exchange module 130, realizing the recovery of cold energy. The first switch unit K1 and the second switch unit K2 are in the on state, and the third switch unit K3 is in the off state. At this time, the coolant in the application side loop 120 can be output to the first water tank 122, where the cold energy is stored. When the first temperature and the second temperature approach equal, or the difference between them is within a preset range, the loop switching module 121 can cut off the passage between itself and the heat exchange module 130, thereby stopping heat exchange.

[0055] Similarly, in heating mode, if the first temperature is greater than the second temperature, and the difference between the first and second temperatures also meets the requirements (e.g., the first temperature is greater than the second temperature, and the difference between the first and second temperatures is greater than 3°C), it indicates that the heat generated by the laboratory's heat source 111 is relatively large, and the heat recovery mode can be entered. The heat from the laboratory's heat source 111 enters the heat exchange module 130 through the heat source generation side loop 110. The coolant in the application side loop 120 exchanges heat through the heat exchange module 130, achieving heat recovery. The first switch unit K1 and the second switch unit K2 are in the on state, and the third switch unit K3 is in the off state. At this time, the coolant in the application side loop 120 can be output to the first water tank 122, where the heat is stored. When the first temperature and the second temperature approach equality, or the difference between them is within a preset range, the loop switching module 121 can cut off the passage between itself and the heat exchange module 130, thereby stopping heat exchange.

[0056] In cooling mode, if the first temperature is greater than the second temperature, or if the first temperature is less than the second temperature but the difference between the two temperatures is less than 2°C, it indicates that the cooling capacity stored in the first water tank 122 is superior to the cooling capacity generated by the laboratory's heat source 111. In this case, the application-side self-circulation mode can be entered. The first switch unit K1 and the second switch unit K2 are in the off state, and the third switch unit K3 is in the on state. The coolant in the application-side circuit 120 is output directly from the first output terminal through the first input terminal, passes through the first water tank 122, and returns to the first input terminal, forming a self-circulation path. Therefore, the application side can utilize the cooling capacity stored in the first water tank 122 to achieve cooling.

[0057] Similarly, in heating mode, if the first temperature is lower than the second temperature, or if the first temperature is higher than the second temperature but the difference between the two temperatures is less than 2°C, it indicates that the heat stored in the first water tank 122 is superior to the heat generated by the laboratory's heat source 111. In this case, the application-side self-circulation mode can be entered. The first switch unit K1 and the second switch unit K2 are in the off state, and the third switch unit K3 is in the on state. The coolant in the application-side circuit 120 passes through the first input terminal, is directly output from the first output terminal, and returns to the first input terminal after passing through the first water tank 122, forming a self-circulation path. Therefore, the application side can utilize the heat stored in the first water tank 122 to achieve heating.

[0058] Figure 4 A schematic diagram of another laboratory heat recovery system provided in this embodiment of the invention is shown below. Figure 4 The circuit conversion module 121 also includes a fourth switch unit K4; the first end of the fourth switch unit K4 is connected to the second end of the first switch unit K1, and the second end of the fourth switch unit K4 is connected to the first water tank 122.

[0059] Specifically, when the fourth switch unit K4 is in the ON state, the chiller unit 160 is bypassed. Therefore, in the cooling or heat recovery mode, the chiller unit 160 can be in a shutdown state, thereby reducing power consumption. At this time, the coolant in the application side loop 120 can exchange heat through the heat exchange module 130, and then the coolant in the application side loop 120 can be directly output to the first water tank 122. The first water tank 122 stores all the cooling or heat, improving storage efficiency and avoiding the loss of cooling or heat.

[0060] When the fourth switch unit K4 is in the off state, the chiller unit 160 can be in the on state. In cooling or heat recovery mode, the chiller unit 160 can adjust the output of cooling or heat in the application-side circuit 120 through the third temperature to assist in providing cooling or heating to the application side. Similarly, in the application-side self-circulation mode, the chiller unit 160 can also adjust the output of cooling or heat in the application-side circuit 120 through the third temperature to assist in providing cooling or heating to the application side.

[0061] For example, by setting a specific time period through the control program, such as from 8:00 PM to 7:00 AM, since the demand for heating or cooling applications is low during such time periods, all cold or heat energy can be recovered.

[0062] For example, in cooling mode, if the first temperature is lower than the second temperature, and the difference between the first and second temperatures also meets the requirements (e.g., the first temperature is lower than the second temperature, and the difference between the first and second temperatures is greater than 3°C), it indicates that the cold energy generated by the laboratory's heat source 111 is relatively large, and the cold energy recovery mode is entered. The cold energy from the laboratory's heat source 111 enters the heat exchange module 130 through the heat source generation side loop 110. The coolant in the application side loop 120 exchanges heat through the heat exchange module 130, realizing the recovery of cold energy. The first switch unit K1, the second switch unit K2, and the fourth switch unit K4 are in the on state, and the third switch unit K3 is in the off state. At this time, the coolant in the application side loop 120 can be output to the first water tank 122, where all the cold energy is stored. When the first temperature and the second temperature approach equality, or the difference between them is within a preset range, the loop switching module 121 can cut off the passage between itself and the heat exchange module 130, thereby stopping heat exchange.

[0063] Similarly, in heating mode, if the first temperature is greater than the second temperature, and the difference between the first and second temperatures also meets the requirements (e.g., the first temperature is greater than the second temperature, and the difference between the first and second temperatures is greater than 3°C), it indicates that the heat generated by the laboratory's heat source 111 is relatively large, and the heat recovery mode can be entered. The heat from the laboratory's heat source 111 enters the heat exchange module 130 through the heat source generation side loop 110. The coolant in the application side loop 120 exchanges heat through the heat exchange module 130, achieving heat recovery. The first switch unit K1, the second switch unit K2, and the fourth switch unit K4 are in the on state, and the third switch unit K3 is in the off state. At this time, the coolant in the application side loop 120 can be output to the first water tank 122, where all the heat is stored. When the first temperature and the second temperature approach equality, or the difference between them is within a preset range, the loop switching module 121 can cut off the passage between itself and the heat exchange module 130, thereby stopping heat exchange.

[0064] During normal periods, such as from 7:00 AM to 8:00 PM, there is a demand for heating or cooling applications. Therefore, some of the cold or heat energy can be recovered and used directly for cooling or heating.

[0065] For example, in cooling mode, if the first temperature is lower than the second temperature, and the difference between the first and second temperatures also meets the requirements (e.g., the first temperature is lower than the second temperature, and the difference between the first and second temperatures is greater than 3°C), it indicates that the cold energy generated by the laboratory's heat source 111 is relatively large, and it enters a partial cold energy recovery mode. The cold energy from the laboratory's heat source 111 enters the heat exchange module 130 through the heat source generation side loop 110. The coolant in the application side loop 120 exchanges heat through the heat exchange module 130, realizing the recovery of cold energy. The first switch unit K1 and the second switch unit K2 are in the conducting state, and the third switch unit K3 and the fourth switch unit K4 are in the cut-off state. At this time, the coolant in the application side loop 120 passes through the chiller unit 160, and is dissipated to the application side for cooling by the terminal device (fan or air handling unit) through the regulation of the chiller unit 160. Part of the cold energy is output to the first water tank 122 for storage.

[0066] Similarly, in heating mode, if the first temperature is greater than the second temperature, and the difference between the first and second temperatures also meets the requirements (e.g., the first temperature is greater than the second temperature, and the difference between the first and second temperatures is greater than 3℃), it indicates that the heat generated by the laboratory's heat source 111 is relatively large, and the heat recovery mode can be entered. The heat from the laboratory's heat source 111 enters the heat exchange module 130 through the heat source generation side loop 110. The coolant in the application side loop 120 exchanges heat through the heat exchange module 130, achieving heat recovery. The first switch unit K1 and the second switch unit K2 are in the conducting state, while the third switch unit K3 and the fourth switch unit K4 are in the cut-off state. At this time, the coolant in the application side loop 120 passes through the chiller / hot water unit 160, and is dissipated to the application side for heating by the terminal device (fan or air handling unit) through the regulation of the chiller / hot water unit 160. Part of the heat is output to the first water tank 122 for storage. Based on the above, when the laboratory's cold and heat source 111 is in the on state of the first switch unit K1 and the second switch unit K2, and in the off state of the third switch unit K3 and the fourth switch unit K4, the cold or heat generated by it can directly participate in the cooling or heating on the application side, further improving the energy utilization rate.

[0067] If the laboratory's heat source 111 is not working, or in cooling mode, the first temperature is greater than the second temperature, or the first temperature is less than the second temperature, but the difference between the first and second temperatures is less than 2℃, it indicates that the cooling capacity stored in the first water tank 122 is greater than the cooling capacity generated by the laboratory's heat source 111. In this case, the application-side self-circulation mode can be entered. The first switch unit K1 and the second switch unit K2 are in the off state, while the third switch unit K3 and the fourth switch unit K4 are in the on state. The coolant in the application-side loop 120 is directly output from the first output terminal through the first input terminal. At this time, the coolant in the application-side loop 120 passes through the chiller unit 160 and, through the regulation of the chiller unit 160, is dissipated to the application side for cooling via the terminal device (fan or air handling unit). Part of the cooling capacity is output to the first water tank 122 for storage. After passing through the first water tank 122, the coolant returns to the first input terminal, forming a self-circulation path. Therefore, the application side can utilize the cooling capacity stored in the first water tank 122 and the chilled / hot water unit 160 to achieve cooling.

[0068] Similarly, in heating mode, if the first temperature is lower than the second temperature, or if the first temperature is higher than the second temperature but the difference between the two temperatures is less than 2°C, it indicates that the heat stored in the first water tank 122 is superior to the heat generated by the laboratory's heat source 111. In this case, the application-side self-circulation mode can be entered. The first switch unit K1 and the second switch unit K2 are in the off state, while the third switch unit K3 and the fourth switch unit K4 are in the on state. The coolant in the application-side circuit 120 is directly output from the first output terminal through the first input terminal. At this time, the coolant in the application-side circuit 120 passes through the chiller / hot water unit 160 and, through the regulation of the chiller / hot water unit 160, is dissipated to the application side for heating via the terminal device (fan or air handling unit). Part of the heat is output to the first water tank 122 for storage. The coolant returns to the first input terminal after passing through the first water tank 122, forming a self-circulation path. Therefore, the application side can utilize the heat stored in the first water tank 122 and the chiller / hot water unit 160 to achieve cooling.

[0069] Optionally, referring to section 4, the heat source generation side loop 110 includes a second water tank 410 and a first drive unit 420. A heat exchange module 130 is connected to the second water tank 410, which in turn is connected to the first drive unit 420. The first drive unit 420 is connected to the laboratory's heat source 111, which in turn is connected to the heat exchange module 130. Specifically, the second water tank 410 also has an insulation function, storing the cold or heat generated by the laboratory's heat source 111, as well as providing storage space for the coolant in the heat source generation side loop 110. The first drive unit 420 can be a water pump, located on the output side of the second water tank 410, and is used to increase the power of the coolant flow. Optionally, the application side loop 120 includes a second drive unit 430, which is located between the first water tank 122 and the first input terminal. Specifically, the second drive unit 430 can be a water pump, located on the output side of the first water tank 122. The second drive unit 430 is used to increase the power of coolant flow. Optionally, the heat exchange module 130 adopts a plate heat exchanger. A plate heat exchanger is a high-efficiency heat exchanger composed of a series of metal plates with a certain corrugated shape stacked together. Thin rectangular channels are formed between the various plates, and heat exchange occurs through the plates. It has the characteristics of high heat exchange efficiency, low heat loss, compact and lightweight structure, small footprint, and long service life.

[0070] Figure 5 This is a schematic flowchart illustrating a laboratory heat recovery method according to an embodiment of the present invention. The method is executed by the laboratory heat recovery system described in any of the above embodiments, and the device can be implemented using hardware and / or software. The method specifically includes the following steps:

[0071] S110, in the cold or heat recovery mode, the circuit conversion module 121 connects the heat exchange module 130 and the circuit conversion module 121. The coolant of the application side circuit 120 is input through the first input terminal, and after heat exchange and recovery by the heat exchange module 130, it is output through the first output terminal and stored in the first water tank 122.

[0072] Specifically, the cold or heat recovery mode is a working mode of the laboratory cold and heat recovery system, which stores the remaining cold or heat output from the laboratory's cold or heat source 111. In the cold or heat recovery mode, the cold or heat from the laboratory's cold or heat source 111 enters the heat exchange module 130 through the cold or heat source generating side loop 110. The coolant in the application side loop 120 recovers heat through the heat exchange module 130. The loop conversion module 121 connects the passage between the heat exchange module 130 and the loop conversion module 121. At this time, the coolant in the application side loop 120 can be output to the first water tank 122, where the cold or heat is stored.

[0073] In the application-side self-circulation mode, S120 and the loop conversion module 121 connect the path between the first output terminal and the first input terminal. The coolant in the application-side loop 120 is input through the first input terminal, output from the first output terminal, and returns to the first input terminal after passing through the first water tank 122, forming a self-circulation path.

[0074] Specifically, the application-side self-circulation mode is a working mode of the laboratory heat recovery system. It utilizes the cooling or heating energy stored in the first water tank 122 to provide cooling or heating to the application side through self-circulation. In application-side self-circulation mode, the loop conversion module 121 only connects the path between the first output terminal and the first input terminal. The coolant in the application-side loop 120 passes through the first input terminal, is directly output from the first output terminal, passes through the first water tank 122, and returns to the first input terminal, forming a self-circulation path. Therefore, the application side can utilize the cooling or heating energy stored in the first water tank 122 to achieve cooling or heating.

[0075] Optionally, the laboratory heat recovery system further includes a first sensing unit 140 and a second sensing unit 150. The first sensing unit 140 is disposed in the heat source generation side circuit 110 and is used to detect the first temperature of the heat source generation side circuit 110. The second sensing unit 150 is disposed in the first water tank 122 and is used to detect the second temperature of the coolant in the first water tank 122.

[0076] The methods include:

[0077] When the cold or heat source 111 in the laboratory provides cold or heat, it enters the cold or heat recovery mode or the application-side self-circulation mode according to the relationship between the first temperature and the second temperature.

[0078] Specifically, the first temperature can represent the temperature of the coolant in the heat source generating side loop 110. The first sensing unit 140 can be located on the output side of the heat source 111 in the laboratory, or on the input side of the heat exchange module 130. Therefore, the first sensing unit 140 can detect the temperature of the coolant entering the heat exchange module 130. The second temperature can represent the temperature inside the first water tank 122, that is, the energy storage temperature of the application side loop 120.

[0079] Therefore, based on the relationship between the first temperature and the second temperature, the laboratory heat recovery system can be controlled to enter either heat recovery mode or application-side self-circulation mode.

[0080] For example, in cooling mode, if the first temperature is lower than the second temperature, and the difference between the first and second temperatures also meets the requirements (e.g., the first temperature is lower than the second temperature, and the difference between the first and second temperatures is greater than 3°C), it indicates that the cold energy generated by the laboratory's heat source 111 is relatively large. The laboratory's heat recovery system then enters the cold energy recovery mode. The cold energy from the laboratory's heat source 111 enters the heat exchange module 130 through the heat source generation side loop 110. The coolant in the application side loop 120 exchanges heat through the heat exchange module 130, thus recovering the cold energy. The loop conversion module 121 connects the heat exchange module 130 and the loop conversion module 121. At this time, the coolant in the application side loop 120 can be output to the first water tank 122, where the cold energy is stored. When the first and second temperatures approach equality, or the difference between them is within a preset range, the loop conversion module 121 can disconnect the connection with the heat exchange module 130, thereby stopping heat exchange.

[0081] Similarly, in heating mode, if the first temperature is greater than the second temperature, and the difference between the first and second temperatures also meets the requirements (e.g., the first temperature is greater than the second temperature, and the difference between the first and second temperatures is greater than 3°C), it indicates that the heat generated by the laboratory's heat source 111 is relatively large, and the heat recovery mode can be entered. The heat from the laboratory's heat source 111 enters the heat exchange module 130 through the heat source generation side loop 110. The coolant in the application side loop 120 exchanges heat through the heat exchange module 130, achieving heat recovery. The loop conversion module 121 connects the heat exchange module 130 and the loop conversion module 121. At this time, the coolant in the application side loop 120 can be output to the first water tank 122, where the heat is stored. When the first and second temperatures approach equality, or the difference between them is within a preset range, the loop conversion module 121 can disconnect the connection with the heat exchange module 130, thereby stopping heat exchange.

[0082] In cooling mode, if the first temperature is greater than the second temperature, or if the first temperature is less than the second temperature but the difference between the two temperatures is less than 2°C, it indicates that the cooling capacity stored in the first water tank 122 is superior to the cooling capacity generated by the laboratory's heat source 111. In this case, the application-side self-circulation mode can be entered. The loop conversion module 121 only connects the path between the first output terminal and the first input terminal. The coolant in the application-side loop 120 passes through the first input terminal, is directly output from the first output terminal, passes through the first water tank 122, and returns to the first input terminal, forming a self-circulation path. Therefore, the application side can utilize the cooling capacity stored in the first water tank 122 to achieve cooling.

[0083] Similarly, in heating mode, if the first temperature is lower than the second temperature, or if the first temperature is lower than the second temperature but the difference between the two temperatures is less than 2°C, it indicates that the heat stored in the first water tank 122 is superior to the heat generated by the laboratory's heat source 111. In this case, the application-side self-circulation mode can be entered. The loop conversion module 121 only connects the path between the first output terminal and the first input terminal. The coolant in the application-side loop 120 passes through the first input terminal, is directly output from the first output terminal, passes through the first water tank 122, and returns to the first input terminal, forming a self-circulation path. Therefore, the application side can utilize the heat stored in the first water tank 122 to achieve heating.

[0084] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A laboratory cold heat recovery system characterized by, The application relates to a cold-heat source generating side circuit, an application side circuit and a heat exchange module; the cold-heat source generating side circuit and the application side circuit exchange heat through the heat exchange module; a cold-heat source of a laboratory is arranged in the cold-heat source generating side circuit; the application side circuit comprises a first water tank and a circuit conversion module; the heat exchange module is connected with the circuit conversion module; the circuit conversion module comprises a first output end and a first input end; the first output end is connected with the first water tank, and the first water tank is connected with the first input end; the circuit conversion module is used for conducting a passage between the heat exchange module and the circuit conversion module in a cold or heat recovery mode; cooling liquid of the application side circuit is output to the first water tank through the first input end, heat exchange and recovery through the heat exchange module, and then output to the first water tank through the first output end; the first water tank stores cold or heat; the circuit conversion module is used for conducting a passage between the first output end and the first input end in an application side self-circulation mode; cooling liquid of the application side circuit is directly output from the first output end through the first input end, and then returned to the first input end through the first water tank, so that a self-circulation passage is formed; a first sensing unit and a second sensing unit are further arranged; the first sensing unit is arranged in the cold-heat source generating side circuit and used for detecting a first temperature of the cold-heat source generating side circuit; the second sensing unit is connected with the first water tank and used for detecting a second temperature of cooling liquid in the first water tank; a cold-heat water unit and a third sensing unit are further arranged; the cold-heat water unit is arranged between the first output end and the first water tank; the third sensing unit is arranged at an input side of the cold-heat water unit; the third sensing unit is used for detecting a third temperature of cooling liquid at the input side of the cold-heat water unit; the cold-heat water unit is used for controlling an output amount of cold or heat of the application side circuit according to the third temperature; the circuit conversion module comprises a first switch unit, a second switch unit and a third switch unit; a first end of the first switch unit is connected with the heat exchange module; a second end of the first switch unit serves as the first input end; a first end of the second switch unit is connected with the heat exchange module; a second end of the second switch unit serves as the first output end; a first end of the third switch unit is connected with the second end of the first switch unit; and a second end of the third switch unit is connected with the second end of the second switch unit; in the cold or heat recovery mode, the first switch unit and the second switch unit are in a conducting state, and the third switch unit is in a cut-off state; in the application side self-circulation mode, the first switch unit and the second switch unit are in a cut-off state, and the third switch unit is in a conducting state; the cold or heat recovery mode and the application side self-circulation mode are automatically switched based on a difference between the first temperature and the second temperature. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2. The laboratory cold heat recovery system of claim 1, wherein, The circuit conversion module further comprises a fourth switch unit; a first end of the fourth switch unit is connected with a second end of the first switch unit, and a second end of the fourth switch unit is connected with the first water tank.

3. The laboratory heat and cold recovery system of claim 1, wherein, The cold-heat source generation side circuit comprises a second water tank and a first driving unit; the heat exchange module is connected with the second water tank; the second water tank is connected with the first driving unit; the first driving unit is connected with the cold-heat source of the laboratory; and the cold-heat source of the laboratory is connected with the heat exchange module.

4. The laboratory heat and cold recovery system of claim 3, wherein, The application side circuit comprises a second driving unit, which is arranged between the first water tank and the first input end.

5. The laboratory heat and power recovery system of claim 1, wherein, The heat exchange module adopts a plate heat exchanger.

6. A laboratory cold heat recovery method, characterized by, The laboratory cold-heat recovery system of any one of claims 1-5 is executed, and the laboratory cold-heat recovery system comprises a cold-heat source generation side circuit, an application side circuit and a heat exchange module; the cold-heat source generation side circuit and the application side circuit exchange heat through the heat exchange module; a cold-heat source of a laboratory is arranged in the cold-heat source generation side circuit; the application side circuit comprises a first water tank and a circuit conversion module; the heat exchange module is connected with the circuit conversion module; the circuit conversion module comprises a first output end and a first input end; the first output end is connected with the first water tank, and the first water tank is connected with the first input end; The method comprises: In the cold-heat recovery mode, the circuit conversion module turns on a passage between the heat exchange module and the circuit conversion module; the cooling liquid of the application side circuit is input through the first input end, exchanges heat through the heat exchange module, is output through the first output end, and stores cold-heat through the first water tank; In the application side self-circulation mode, the circuit conversion module only turns on a passage between the first output end and the first input end; the cooling liquid of the application side circuit is input through the first input end, is output through the first output end, returns to the first input end after passing through the first water tank, and forms a self-circulation passage.

7. The laboratory heat and cold recovery method according to claim 6, characterized in that, The laboratory cold-heat recovery system further comprises a first sensing unit and a second sensing unit; the first sensing unit is arranged in the cold-heat source generation side circuit and is used for detecting a first temperature of the cold-heat source generation side circuit; The second sensing unit is arranged in the first water tank and is used for detecting a second temperature of the cooling liquid in the first water tank; The method comprises: When the cold-heat source of the laboratory provides cold-heat, the cold-heat recovery mode or the application side self-circulation mode is entered according to a relationship between the first temperature and the second temperature.

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