Enthalpy difference laboratory with dual heat recovery function

Abstract

The utility model discloses an enthalpy difference laboratory with a dual heat recovery function. The enthalpy difference laboratory is used for an enthalpy difference experiment of a tested machine, the enthalpy difference laboratory comprises water circulation equipment, the water circulation equipment comprises a water tank, a water inlet channel is arranged between the water tank and a water inlet of the tested machine, and a water outlet channel is arranged between the water tank and a water outlet of the tested machine; the air processor comprises a refrigerating machine, the refrigerating machine is used for refrigerating the testing room when the room temperature of the testing room is higher than a preset refrigerating temperature, and a cooling water circulating pipeline of the refrigerating machine is used for discharging heat, replaced from the testing room, of the refrigerating machine; the first heat exchange equipment is arranged in the water outlet channel and is used for exchanging heat between the cooling capacity generated by the tested machine and the test room; and the second heat exchange equipment is arranged on a condensation side water outlet pipe of the cooling water circulation pipeline and is used for exchanging heat exchanged by the refrigerating machine from the test room with the water tank. The first heat exchange equipment and the second heat exchange equipment are combined with an original channel, and dual heat recovery of the laboratory is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of enthalpy difference test chambers, and in particular to an enthalpy difference laboratory with a dual heat recovery function. Background Art

[0002] With the development of technology, enthalpy difference laboratories have found good applications in the research and testing of refrigeration, air conditioning systems and other equipment related to thermodynamics.

[0003] In the existing enthalpy difference laboratory, the temperature balance on the water side is achieved by the refrigeration of the test machine and the electric heating of the water tank, and the temperature balance on the wind side is achieved by the electric heating of the air handling equipment and the refrigeration of the refrigerator. At the same time, during the refrigeration process of the test machine, heat will be dissipated into the indoor environment, and the air handling equipment will also transfer heat to the indoor environment through electric heating. After the ambient temperature reaches the target value, the excess heat will be consumed by the external refrigerator, and the heat generated by the refrigerator while working will be consumed by the cooling tower. The heat generated by the refrigerator is directly consumed without a recovery device, resulting in waste. At the same time, during the refrigeration process of the test machine, the cold energy returns to the water tank through the water circuit, and the water tank is heated by electric heating to achieve temperature balance, and the cold energy is wasted. That is, the existing enthalpy difference laboratory has insufficient energy utilization.

[0004] Therefore, in order to reduce the energy consumption of the enthalpy difference laboratory and solve the above-mentioned technical problems, an enthalpy difference laboratory with dual heat recovery function is urgently needed. Utility Model Content

[0005] The present application provides an enthalpy difference laboratory with dual heat recovery functions, which solves the problem of insufficient energy utilization of enthalpy difference laboratories in related technologies.

[0006] To achieve the above objectives, this application is implemented through the following technical solutions:

[0007] The present application provides an enthalpy difference laboratory with dual heat recovery function, the enthalpy difference laboratory is used for enthalpy difference experiment of a machine under test, and the enthalpy difference laboratory includes:

[0008] A water circulation device, the water circulation device comprising a water tank, a water inlet channel being provided between the water tank and the water inlet of the tested machine, and a water outlet channel being provided between the water tank and the water outlet of the tested machine;

[0009] An air handler, the air handler comprising a refrigerator, the refrigerator being used to cool the test room when the room temperature of the test room is higher than a preset cooling temperature, the cooling water circulation pipeline of the refrigerator being used to discharge the heat displaced from the test room by the refrigerator; the test room is used to place the test machine;

[0010] A first heat exchange device, arranged in the water outlet channel, for exchanging heat between the cold energy generated by the tested machine and the test room;

[0011] The second heat exchange device is arranged at the outlet pipe of the condensation side of the cooling water circulation pipeline, and is used for exchanging heat between the heat displaced from the test room by the refrigerator and the water tank.

[0012] A further technical solution is that the first heat exchange device includes a first plate heat exchanger and a first heat exchange water pump;

[0013] The first plate heat exchanger has a first channel and a second channel for mutual heat exchange, the first channel being a section of the water outlet channel; one end of the second channel is connected to one end of a heat recovery coil in the enthalpy difference laboratory, and the other end is connected to the other end of the heat recovery coil to form a loop; the first heat exchange water pump is arranged between the second channel and the heat recovery coil to exchange heat between the cold energy generated by the test machine and the test room.

[0014] A further technical solution is that the water tank comprises a heat exchange input port and a heat exchange output port for exchanging heat with the second heat exchange device;

[0015] The second heat exchange device includes a second plate heat exchanger and a second water exchange water pump. The second plate heat exchanger has a third channel and a fourth channel for mutual heat exchange. Both ends of the third channel are respectively connected to different nodes of the condensation side water outlet pipe. One end of the fourth channel is connected to the heat exchange input port of the water tank, and the other end is connected to the heat exchange output port of the water tank. The second water exchange water pump is arranged between the fourth channel and the water tank to exchange heat displaced by the refrigerator from the test room with the water tank.

[0016] A further technical solution is that the air handling unit further comprises a cooling tower and a cooling tower heat exchanger, the cooling tower heat exchanger has a fifth channel and a sixth channel for mutual heat exchange, and the two ends of the fifth channel are respectively connected to the condensation side water outlet pipe and the condensation side water inlet pipe;

[0017] A cooling water inlet pipe and a cooling water outlet pipe are provided between the cooling tower heat exchanger and the cooling tower, and both ends of the sixth channel are connected to the cooling tower through the cooling water inlet pipe and the cooling water outlet pipe respectively.

[0018] A further technical solution is that the water tank is also connected to an air cooling unit, and the air cooling unit is used to assist the water tank in heat exchange.

[0019] A further technical solution is that the air handling unit also includes an electric heater, and the electric heater is used to heat the test room when the room temperature is lower than a preset heating temperature.

[0020] A further technical solution is that a three-way valve is provided on the water inlet channel, and a node of the water outlet channel is connected to one end of the three-way valve through a pipeline.

[0021] Compared with the related art, the advantages of the utility model include:

[0022] The first heat exchange device is arranged on the water outlet channel of the test machine, and its function is to exchange heat between the cold energy generated by the test machine and the test room, that is, to use the cold energy generated by the test machine to reduce the temperature of the test room and realize heat recovery of the heat in the test room. The second heat exchange device is arranged on the outlet pipe on the condensation side of the cooling water circulation pipeline of the refrigerator, and its function is to exchange heat between the heat displaced from the test room by the refrigerator and the water tank, that is, to recover the heat discharged by the refrigerator into the water tank for heating the water in the water tank and realize heat recovery of the heat of the refrigerator. Thus, through the first heat exchange device, the cold energy generated by the test machine can be used for cooling the test room, reducing the energy consumption of the refrigerator and realizing the energy recovery of the test machine. Through the second heat exchange device, the heat discharged by the refrigerator is recovered into the water tank, reducing the energy consumption of the electric heating of the water tank and realizing energy saving of the electric heating of the water tank. Through the above heat recovery technology, the energy efficiency ratio is improved and the waste of energy is reduced. In the long run, the above energy saving and consumption reduction can significantly reduce the operating cost of the laboratory.

[0023] In summary, the technical solution provided in the present application can achieve a dual heat recovery function through structural improvement, and improve energy efficiency and reduce energy consumption through dual energy recovery and utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic structural diagram of an enthalpy difference laboratory provided in an embodiment of the present application is shown.

[0025] Illustration: 10. Air handling unit; 20. Water circulation equipment; 11. Refrigerator; 12. Cooling tower; 13. Cooling tower heat exchanger; 14. Electric heater; 21. Water tank; 22. Air cooling unit; 23. Three-way valve; 31. First plate heat exchanger; 32. First water exchange pump; 41. Second plate heat exchanger; 42. Second water exchange pump. DETAILED DESCRIPTION

[0026] In order to facilitate the understanding of the present application, the present application will be described more comprehensively with reference to the relevant drawings below. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many other different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0028] See also Figure 1 This embodiment provides an enthalpy difference laboratory, which is used for enthalpy difference experiments of a test machine, and the arrow direction is used to indicate the direction of water flow. The enthalpy difference laboratory includes:

[0029] A water circulation device 20, the water circulation device 20 comprising a water tank 21, a water inlet channel is provided between the water tank 21 and the water inlet of the tested machine, and a water outlet channel is provided between the water tank 21 and the water outlet of the tested machine;

[0030] An air handler 10, the air handler 10 comprising a refrigerator 11, the refrigerator 11 being used to cool the test room when the room temperature of the test room is higher than a preset cooling temperature, the cooling water circulation pipeline of the refrigerator 11 being used to discharge the heat displaced from the test room by the refrigerator 11; the test room being used to place the test machine;

[0031] A first heat exchange device, arranged in the water outlet channel, for exchanging heat between the cold energy generated by the tested machine and the test room;

[0032] The second heat exchange device is arranged at the outlet pipe of the condensation side of the cooling water circulation pipeline, and is used for exchanging heat between the heat displaced from the test room by the refrigerator 11 and the water tank 21 .

[0033] The water circulation device 20 includes a water tank 21, and a water inlet channel and a water outlet channel are respectively provided between the water tank 21 and the water inlet and the water outlet of the test machine. Water circulates in the water inlet channel and the water outlet channel to adjust the water temperature of the test machine. The air handling unit 10 includes a refrigerator 11. When the room temperature of the test room is higher than the preset cooling temperature, the refrigerator 11 will start to cool the test room. The heat generated by the refrigerator 11 during the cooling process is discharged through the cooling water circulation pipeline.

[0034] The first heat exchange device is arranged on the water outlet channel of the test machine, and its function is to exchange heat between the cold energy generated by the test machine and the test room, that is, to use the cold energy generated by the test machine to reduce the temperature of the test room, and realize heat recovery of the heat in the test room. The second heat exchange device is arranged on the condensation side water outlet pipe of the cooling water circulation pipeline of the refrigerator 11, and its function is to exchange heat between the heat displaced from the test room by the refrigerator 11 and the water tank 21, that is, to recover the heat discharged by the refrigerator 11 into the water tank 21, and to heat the water in the water tank 21, and realize heat recovery of the heat of the refrigerator.

[0035] Thus, through the first heat exchange device, the cold energy generated by the test machine can be used for cooling the test room, reducing the energy consumption of the refrigerator 11 and realizing the energy recovery of the test machine. Through the second heat exchange device, the heat discharged by the refrigerator 11 is recovered into the water tank 21, reducing the energy consumption of the electric heating of the water tank 21 and realizing energy saving of the electric heating of the water tank 21. Through the above heat recovery technology, the energy efficiency ratio is improved and the waste of energy is reduced. In the long run, the above energy saving and consumption reduction can significantly reduce the operating costs of the laboratory.

[0036] To sum up, the technical solution provided by the present application recovers the energy generated by the test machine and transfers it back to the indoor room, saving the electric heating output of the water tank 21 and cooling the indoor room at the same time; recovers the heat generated by the refrigerator 11 to the water tank 21, saving the electric heating output of the water tank 21; and can achieve dual heat recovery function through structural improvement, and through dual energy recovery and utilization, improves energy efficiency and reduces energy consumption.

[0037] In some embodiments, the first heat exchange device includes a first plate heat exchanger 31 and a first heat exchange water pump 32;

[0038] The first plate heat exchanger 31 has a first channel and a second channel for mutual heat exchange, the first channel being a section of the water outlet channel; one end of the second channel is connected to one end of a heat recovery coil in the enthalpy difference laboratory, and the other end is connected to the other end of the heat recovery coil to form a loop; the first heat exchange water pump 32 is arranged between the second channel and the heat recovery coil for exchanging heat between the cold energy generated by the test machine and the test room.

[0039] The first heat exchange device is composed of a first plate heat exchanger 31 and a first heat exchange water pump 32. The first plate heat exchanger 31 has two channels for heat exchange with each other. The first channel is a part of the water outlet channel, and the two ends of the second channel are respectively connected to the two ends of the heat recovery coil arranged in the enthalpy difference laboratory. The first heat exchange water pump 32 is arranged between the second channel and the heat recovery coil, and is used to circulate water to promote the heat exchange between the cold generated by the test machine and the test room. Specifically, the first heat exchange water pump 32 can be arranged on the pipeline between the second channel and the heat recovery coil.

[0040] The cold energy generated by the tested machine when working is transferred to the first channel through the water outlet channel, and the cold water in the first channel exchanges heat with the water in the second channel, transferring the cold energy to the second channel. The first heat exchange water pump 32 transports the water in the second channel to the heat recovery coil, and the water in the heat recovery coil exchanges heat with the air in the test room, transferring the cold energy to the test room to achieve cooling.

[0041] Thus, the compact structure and high heat exchange efficiency of the plate heat exchanger can more effectively exchange heat. By recycling the cold energy generated by the test machine, the dependence on the refrigerator 11 is reduced, the overall energy consumption is reduced, and an efficient, energy-saving and flexible heat exchange process is achieved.

[0042] In some embodiments, the water tank 21 includes a heat exchange input port and a heat exchange output port for exchanging heat with the second heat exchange device;

[0043] The second heat exchange device includes a second plate heat exchanger 41 and a second heat exchange water pump 42. The second plate heat exchanger 41 has a third channel and a fourth channel for mutual heat exchange. The two ends of the third channel are respectively connected to different nodes of the condensation side water outlet pipe. One end of the fourth channel is connected to the heat exchange input port of the water tank 21, and the other end is connected to the heat exchange output port of the water tank 21. The second heat exchange water pump 42 is arranged between the fourth channel and the water tank 21 to exchange heat between the heat displaced from the test room by the refrigerator 11 and the water tank 21.

[0044] The second heat exchange device is composed of a second plate heat exchanger 41, which is designed with a third channel and a fourth channel for mutual heat exchange. The two ends of the third channel are connected to different nodes of the condensing side outlet pipe of the cooling water circulation pipeline of the refrigerator 11, which is used to receive the heat discharged by the refrigerator 11. One end of the fourth channel is connected to the heat exchange input port of the water tank 21, and the other end is connected to the heat exchange output port of the water tank 21, forming a closed-loop heat exchange path. The second heat exchange water pump 42 is arranged between the fourth channel and the water tank 21, and is responsible for pumping water to circulate between the fourth channel and the water tank 21 to promote the heat exchange between the heat displaced from the test room by the refrigerator 11 and the water in the water tank 21. Specifically, the second heat exchange water pump 42 can be arranged on the pipeline between the fourth channel and the water tank 21.

[0045] When the refrigerator 11 cools the test room, the heat generated is discharged through the condensation side water outlet pipe. The heat is received by the third channel and transferred to the second plate heat exchanger 41. The second heat exchange water pump 42 transports the water in the water tank 21 to the fourth channel to exchange heat with the heat in the third channel. The hot water after heat exchange returns to the water tank 21, thereby increasing the water temperature in the water tank 21.

[0046] Thus, by recycling the heat discharged by the refrigerator 11, the dependence on the electric heating of the water tank 21 and the energy consumption of the electric heating of the water tank 21 are reduced. At the same time, by recycling the heat of the refrigerator 11, the heat directly discharged into the environment is reduced, which helps to reduce greenhouse gas emissions. In the long run, due to the reduction of power consumption, the operating cost of the laboratory can be significantly reduced.

[0047] In a specific application, it can be considered that the water tank 21 is also connected to an air cooling unit 22 to assist the water tank in heat exchange. There is a pipeline connection between the water tank and the air cooling unit. When the temperature of the water tank is too high, the air cooling unit passes cold water into the water tank through the pipeline, and the hot water in the water tank is cooled by air cooling to maintain the water temperature in the water tank within a predetermined range. At the same time, the electric heating device in the water tank 21 performs electric heating when the temperature of the water tank is too low. The cooperation of the electric heating device and the air cooling unit 22 enables the water tank to meet the laboratory needs.

[0048] In summary, by providing the second heat exchange device, effective recovery and utilization of heat from the refrigerator 11 is achieved, thereby reducing operating costs and environmental impact.

[0049] In some embodiments, the air handler 10 further includes a cooling tower 12 and a cooling tower heat exchanger 13, wherein the cooling tower heat exchanger 13 has a fifth channel and a sixth channel for mutual heat exchange, and both ends of the fifth channel are respectively connected to the condensation side water outlet pipe and the condensation side water inlet pipe;

[0050] A cooling water inlet pipe and a cooling water outlet pipe are provided between the cooling tower heat exchanger 13 and the cooling tower 12, and both ends of the sixth channel are connected to the cooling tower 12 through the cooling water inlet pipe and the cooling water outlet pipe respectively.

[0051] The cooling tower heat exchanger 13 is designed to include two channels for heat exchange with each other. The fifth channel connects the condensation side outlet pipe and the condensation side inlet pipe, and is used to transfer the heat generated by the refrigerator 11 during the condensation process to the heat exchanger. The sixth channel is connected to the cooling tower 12 through the cooling water inlet pipe and the cooling water outlet pipe, and is used to transfer the heat in the cooling tower heat exchanger 13 to the cooling tower 12. After cooling from the cooling tower 12, the cooling water enters the sixth channel of the cooling tower heat exchanger 13 through the cooling water inlet pipe, absorbs the heat in the fifth channel, and then returns to the cooling tower 12 through the cooling water outlet pipe for re-cooling. Specifically, the cooling tower 12 can use air flow and water evaporation to dissipate heat, reduce the temperature of the cooling water, and make it re-enter the heat exchanger cycle. Therefore, through the design of the fifth and sixth channels of the cooling tower heat exchanger 13, the heat generated by the refrigerator 11 is more effectively transferred to the cooling water.

[0052] In some embodiments, the air handler 10 further includes an electric heater 14, and the electric heater 14 is used to heat the test room when the room temperature is lower than a preset heating temperature.

[0053] The air handler 10 includes an electric heater 14, which is mainly used to provide additional heat to the test room when the room temperature of the test room is lower than the preset heating temperature. It can be considered that once the room temperature is lower than the preset heating temperature, the electric heater 14 will be activated. In a specific application, the heated air is sent into the test room through the air circulation device (such as a fan) in the air handler 10, thereby increasing the temperature of the test room.

[0054] In some embodiments, a three-way valve 23 is provided on the water inlet channel, and a node of the water outlet channel is connected to one end of the three-way valve 23 through a pipeline. It can be considered that the channel formed by the water inlet and the water outlet of the three-way valve 23 is provided in the water inlet channel, and the bypass of the three-way valve 23 is connected to the water outlet channel. In specific applications, changing the water flow path by the three-way valve 23 helps to control the water inlet temperature of the machine under test.

[0055] The terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are configured to distinguish similar objects, and are not necessarily configured to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0056] This application is explained from the perspectives of purpose of use, effectiveness, progress and novelty, and has met the functional enhancement and usage requirements emphasized by the Patent Law. The above description and drawings of this application are only the preferred embodiments of this application, and are not intended to limit this application. Therefore, all structures, devices, features, etc. that are similar or identical to this application, that is, all equivalent replacements or modifications made in accordance with the scope of the patent application of this application, should fall within the scope of protection of the patent application of this application.

Claims

1. An enthalpy difference laboratory with dual heat recovery function, characterized in that: The enthalpy difference laboratory is used for enthalpy difference experiments of the tested machine, and the enthalpy difference laboratory includes: A water circulation device, the water circulation device comprising a water tank, a water inlet channel being provided between the water tank and the water inlet of the tested machine, and a water outlet channel being provided between the water tank and the water outlet of the tested machine; An air handler, the air handler comprising a refrigerator, the refrigerator being used to cool the test room when the room temperature of the test room is higher than a preset cooling temperature, the cooling water circulation pipeline of the refrigerator being used to discharge the heat displaced from the test room by the refrigerator; the test room is used to place the test machine; A first heat exchange device, arranged in the water outlet channel, for exchanging heat between the cold energy generated by the tested machine and the test room; The second heat exchange device is arranged at the outlet pipe of the condensation side of the cooling water circulation pipeline, and is used for exchanging heat between the heat displaced from the test room by the refrigerator and the water tank.

2. The enthalpy difference laboratory with dual heat recovery function according to claim 1, characterized in that: The first heat exchange device includes a first plate heat exchanger and a first heat exchange water pump; The first plate heat exchanger has a first channel and a second channel for mutual heat exchange, the first channel being a section of the water outlet channel; one end of the second channel is connected to one end of a heat recovery coil in the enthalpy difference laboratory, and the other end is connected to the other end of the heat recovery coil to form a loop; the first heat exchange water pump is arranged between the second channel and the heat recovery coil to exchange heat between the cold energy generated by the test machine and the test room.

3. The enthalpy difference laboratory with dual heat recovery function according to claim 1, characterized in that: The water tank comprises a heat exchange input port and a heat exchange output port for exchanging heat with the second heat exchange device; The second heat exchange device includes a second plate heat exchanger and a second water exchange water pump. The second plate heat exchanger has a third channel and a fourth channel for mutual heat exchange. Both ends of the third channel are respectively connected to different nodes of the condensation side water outlet pipe. One end of the fourth channel is connected to the heat exchange input port of the water tank, and the other end is connected to the heat exchange output port of the water tank. The second water exchange water pump is arranged between the fourth channel and the water tank to exchange heat displaced by the refrigerator from the test room with the water tank.

4. The enthalpy difference laboratory with dual heat recovery function according to claim 3 is characterized in that: The air handling unit further includes a cooling tower and a cooling tower heat exchanger, wherein the cooling tower heat exchanger has a fifth channel and a sixth channel for mutual heat exchange, and both ends of the fifth channel are respectively connected to the condensation side water outlet pipe and the condensation side water inlet pipe; A cooling water inlet pipe and a cooling water outlet pipe are provided between the cooling tower heat exchanger and the cooling tower, and both ends of the sixth channel are connected to the cooling tower through the cooling water inlet pipe and the cooling water outlet pipe respectively.

5. The enthalpy difference laboratory with dual heat recovery function according to claim 3 is characterized in that: The water tank is also connected to an air cooling unit, and the air cooling unit is used to assist the water tank in heat exchange.

6. The enthalpy difference laboratory with dual heat recovery function according to claim 1, characterized in that: The air handling unit further includes an electric heater, which is used to heat the test room when the room temperature is lower than a preset heating temperature.

7. The enthalpy difference laboratory with dual heat recovery function according to claim 1, characterized in that: A three-way valve is provided on the water inlet channel, and a node of the water outlet channel is connected to one end of the three-way valve through a pipeline.

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