CN119268427B - Laboratory cold and heat recovery system and method - Google Patents
Laboratory cold and heat recovery system and methodInfo
- Publication number
- CN119268427B CN119268427B CN202411469645.XA CN202411469645A CN119268427B CN 119268427 B CN119268427 B CN 119268427B CN 202411469645 A CN202411469645 A CN 202411469645A CN 119268427 B CN119268427 B CN 119268427B
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- heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/0034—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
- F28F27/02—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus for controlling the distribution of heat-exchange media between different channels
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/56—Heat recovery units
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- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
本发明公开了一种实验室冷热量回收系统及方法，冷热源产生侧回路通过换热模块与应用侧回路进行热量交换，回路转换模块导通换热模块与回路转换模块之间的通路，通过应用侧回路的第一水箱对冷量或热量进行存储，在应用侧自循环模式下，回路转换模块导通第一输出端和第一输入端之间的通路，第一水箱与回路转换模块之间形成自循环通路，应用侧可以利用第一水箱存储的冷量或热量实现供冷或供热。从而实现把实验过程中产生的冷量或热量进行回收，通过蓄能的方式把能量储存以及利用，避免能源浪费，提升了能源的利用效率。
This invention discloses a laboratory heat recovery system and method. The heat source generation loop exchanges heat with the application-side 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-side loop stores the cold or heat. 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 utilize the cold or heat stored in the first water tank for cooling or heating. This system recovers the cold or heat generated during experiments, storing and utilizing energy through energy storage, avoiding energy waste, and improving energy efficiency.
Description
Technical Field
The embodiment of the invention relates to the technical field of air energy cooling and heating, in particular to a laboratory cold and heat recovery system and method.
Background
In the scientific research process of scientific research institutions such as schools and enterprises, residual cold or heat can be generated, and the part of energy is usually neutralized through equipment such as an electric heating unit, a water chilling unit or a cooling tower, so that the maintenance cost of the equipment is increased, the resource waste of the cold or heat is caused, and the utilization efficiency of energy is reduced.
Disclosure of Invention
The invention provides a laboratory cold and heat recovery system and a laboratory cold and heat recovery method, which are used for recovering cold or heat generated in the experimental process, storing and utilizing energy in an energy storage mode, avoiding energy waste and improving the energy utilization efficiency.
In a first aspect, the embodiment of the invention provides a laboratory cold and heat recovery system, which comprises a cold and heat source generation side loop, an application side loop and a heat exchange module, wherein the cold and heat source generation side loop and the application side loop exchange heat through the heat exchange module;
the cold and heat source of the laboratory is arranged in the cold and heat source generation side loop;
The application side loop comprises a first water tank and a loop conversion module, wherein the heat exchange module is connected with the loop conversion module, and the loop conversion module comprises a first output end and a first input end;
the loop conversion module is used for conducting a passage between the heat exchange module and the loop conversion module in a cold energy or heat recovery mode, the cooling liquid of the application side loop passes through the first input end, and after heat exchange recovery is carried out by the heat exchange module, the cooling liquid is output to the first water tank by the first output end, and the first water tank stores the cold energy or heat;
The loop 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, and the cooling liquid of the application side loop is directly output by the first output end through the first input end and returns to the first input end after passing through the first water tank to form a self-circulation passage.
Optionally, the laboratory cold and heat recovery system further comprises a first sensing unit and a second sensing unit, wherein the first sensing unit is arranged on the cold and heat source generation side loop and is used for detecting a first temperature of the cold and heat source generation side loop, and the second sensing unit is connected with the first water tank and is used for detecting a second temperature of the cooling liquid in the first water tank.
Optionally, the laboratory cold and hot energy recovery system further comprises a cold and hot water unit and a third sensing unit, wherein the cold and hot water unit is arranged between the first output end and the first water tank, the third sensing unit is arranged on the input side of the cold and hot water unit, the third sensing unit is used for detecting a third temperature of cooling liquid on the input side of the cold and hot water unit, and the cold and hot water unit is used for controlling the output quantity of cold energy or heat of the application side loop according to the third temperature.
Optionally, the loop conversion module includes a first switch unit, a second switch unit, and a third switch unit;
The first end of the first switch unit is connected with the heat exchange module, the second end of the first switch unit is used as the first input end, the first end of the second switch unit is connected with the heat exchange module, the second end of the second switch unit is used as the first output end, the first end of the third switch unit is connected with the second end of the first switch unit, and the 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 an on state, the third switch unit is in an off state, and in the application side self-circulation mode, the first switch unit and the second switch unit are in an off state, and the third switch unit is in an on state.
Optionally, the loop conversion module further comprises a fourth switch unit, wherein 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.
Optionally, the cold and heat source generating side loop includes 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 and heat source of the laboratory, and the cold and heat source of the laboratory is connected with the heat exchange module.
Optionally, the application side loop includes a second drive unit, the second drive unit being disposed between the first tank and the first input.
Optionally, the heat exchange module adopts a plate heat exchanger.
In a second aspect, the embodiment of the invention provides a laboratory cold and heat recovery method, which is implemented by a laboratory cold and heat recovery system, wherein the laboratory cold and heat recovery system comprises a cold and heat source generation side loop, an application side loop and a heat exchange module, the cold and heat source generation side loop and the application side loop exchange heat through the heat exchange module, a laboratory cold and heat source is arranged in the cold and heat source generation side loop, the application side loop comprises a first water tank and a loop conversion module, the heat exchange module is connected with the loop conversion module, the loop 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 the following steps:
The loop conversion module is used for conducting a passage between the heat exchange module and the loop conversion module in a cold energy or heat recovery mode, the cooling liquid of the application side loop is input through the first input end, exchanges heat through the heat exchange module, is output through the first output end, and stores cold energy or heat through the first water tank;
And the loop conversion module only conducts a passage between the first output end and the first input end in an application side self-circulation mode, and the cooling liquid of the application side loop is input through the first input end, is output by the first output end, passes through the first water tank and returns to the first input end to form a self-circulation passage.
Optionally, the laboratory cold and heat recovery system further comprises a first sensing unit and a second sensing unit, wherein the first sensing unit is arranged in the cold and heat source generation side loop and is used for detecting a first temperature of the cold and heat source generation side loop;
The method comprises the following steps:
and when the cold and heat source of the laboratory provides cold or heat, entering a cold or heat recovery mode or entering the application side self-circulation mode according to the relation between the first temperature and the second temperature.
According to the laboratory cold and heat recovery system provided by the embodiment of the invention, the cold source generation side loop exchanges heat with the application side loop through the heat exchange module, the loop conversion module conducts the passage between the heat exchange module and the loop conversion module, the first water tank of the application side loop stores cold or heat, the loop conversion module conducts the passage between the first output end and the first input end in the application side self-circulation mode, a self-circulation passage is formed between the first water tank and the loop conversion module, and the application side can utilize the cold or heat stored by the first water tank to realize cold or heat supply. Therefore, the cold energy or heat generated in the experimental process is recovered, the energy is stored and utilized in an energy storage mode, the energy waste is avoided, and the energy utilization efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of a laboratory cold and heat recovery system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a laboratory cold and heat recovery system according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a laboratory cold and heat recovery system according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a laboratory cold and heat recovery system according to an embodiment of the present invention;
Fig. 5 is a schematic flow chart of a method for recovering cold and heat in a laboratory according to an embodiment of the invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Fig. 1 is a schematic structural diagram of a laboratory cold and heat recovery system according to an embodiment of the present invention, referring to fig. 1, including a cold and heat source generating side loop 110, an application side loop 120 and a heat exchange module 130, where the cold and heat source generating side loop 110 and the application side loop 120 exchange heat through the heat exchange module 130;
The cold heat source 111 of the laboratory is provided in the cold heat source generation side circuit 110;
The application side loop 120 comprises a first water tank 122 and a loop conversion module 121, the heat exchange module 130 is connected with the loop conversion module 121, the loop conversion module 121 comprises a first output end and a first input end, the first output end is connected with the first water tank 122, and the first water tank 122 is connected with the first input end;
The loop conversion module 121 is configured to conduct a path between the heat exchange module 130 and the loop conversion module 121 in a cold or heat recovery mode, and the cooling liquid of the application side loop 120 passes through the first input end, exchanges heat and recovers through the heat exchange module 130, and then is output to the first water tank 122 through the first output end, and stores the cold or heat through the first water tank 122;
The loop conversion module 121 is configured to conduct a path between the first output end and the first input end in the application-side self-circulation mode, and the cooling liquid of the application-side loop 120 is directly output from the first output end through the first input end and returns to the first input end after passing through the first water tank 122, thereby forming a self-circulation path.
Specifically, the cold and heat source 111 in the laboratory refers to an energy source formed by heat or cold generated by the test equipment during the experiment process, or an energy source formed by other equipment during the experiment process in order to heat or cool the test equipment. That is, the cold heat source 111 of the laboratory may output the remaining heat or cold. The cold and heat source generation side circuit 110 is a circuit in which the laboratory cold and heat source 111 is located, and the cold and heat source generation side circuit 110 may transfer heat or cold output from the laboratory cold and heat source 111 to the heat exchange module 130. The heat exchange module 130 exchanges heat with the cooling liquid of the application side loop 120, so that the application side can utilize the part of energy, and the utilization efficiency of energy sources is improved. The application side may include an active area where heat or cold is required, such as an office area, a canteen area, a leisure area, etc.
The application side circuit 120 is a heat or cold recovery circuit and an application side heat or cold transport circuit. 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, an input end of the first water tank 122 is connected with a first output end of the loop conversion module 121, an output end of the first water tank 122 is connected with a first input end of the loop conversion module 121, and a circulation path is formed between the first water tank 122 and the loop conversion module 121. It should be noted that, in the above embodiment, the connection relationship may be a direct pipe connection relationship or an indirect pipe connection relationship, for example, in some embodiments, in order to improve the flow power of the cooling liquid on the output end side of the first water tank 122, a corresponding driving unit is disposed between the output end of the first water tank 122 and the first input end of the loop conversion module 121, for example, the driving unit is a water pump, and the power of the cooling liquid flowing is increased by the water pump, and 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.
The cold or heat recovery mode is an operation mode of the laboratory cold or heat recovery system, and the cold or heat source 111 of the laboratory outputs the remaining cold or heat to be stored. In the cold or heat recovery mode, the cold or heat of the cold or heat source 111 in the laboratory enters the heat exchange module 130 through the cold or heat source generating side loop 110, the cooling liquid of the application side loop 120 is recovered through the heat exchange module 130, the loop conversion module 121 conducts the passage between the heat exchange module 130 and the loop conversion module 121, and at this time, the cooling liquid of the application side loop 120 can be output to the first water tank 122, and the cold or heat is stored by the first water tank 122.
The application side self-circulation mode is an operation mode of the laboratory cold and heat recovery system, and provides cold or heat to the application side through self-circulation using the cold or heat stored in the first water tank 122. In the application-side self-circulation mode, the loop conversion module 121 only conducts the path between the first output end and the first input end, and the cooling liquid of the application-side loop 120 is directly output from the first output end through the first input end, returns to the first input end after passing through the first water tank 122, and forms a self-circulation path. Accordingly, the application side can realize cooling or heating by using the cooling or heating amount stored in the first water tank 122.
In the laboratory cold and heat recovery system provided by the embodiment of the invention, the cold and heat source generating side loop 110 exchanges heat with the application side loop 120 through the heat exchange module 130, the loop conversion module 121 conducts the passage between the heat exchange module 130 and the loop conversion module 121, the first water tank 122 of the application side loop 120 stores cold or heat, the loop conversion module 121 conducts the passage between the first output end and the first input end in the application side self-circulation mode, a self-circulation passage is formed between the first water tank 122 and the loop conversion module 121, and the application side can realize cooling or heating by using the cold or heat stored by the first water tank 122. Therefore, the cold energy or heat generated in the experimental process is recovered, the energy is stored and utilized in an energy storage mode, the energy waste is avoided, and the energy utilization efficiency is improved.
Based on the above embodiment, with continued reference to fig. 1, the laboratory cold and heat recovery system further includes a first sensing unit 140 and a second sensing unit 150, wherein the first sensing unit 140 is disposed in the cold and heat source generating side loop 110 and is used for detecting a first temperature of the cold and heat source generating side loop 110, and the second sensing unit 150 is connected to the first water tank 122 and is used for detecting a second temperature of the cooling liquid in the first water tank 122.
Specifically, the first temperature may represent the temperature of the cooling liquid in the cold-heat source generating side circuit 110, and the first sensing unit 140 may be disposed at the output side of the cold-heat source 111 of the laboratory or at the input side of the heat exchange module 130, and thus, the first sensing unit 140 may detect the temperature of the cooling liquid entering the heat exchange module 130. The second temperature may represent the temperature within the first tank 122, that is, the stored energy temperature of the application side loop 120.
Therefore, the laboratory cold-heat recovery system can be controlled to enter a cold-heat recovery mode or an application-side self-circulation mode according to the relation between the first temperature and the second temperature.
For example, in the cooling mode, if the first temperature is less than the second temperature, and the difference between the first temperature and the second temperature also meets the requirement, for example, the first temperature is less than the second temperature, and the difference between the first temperature and the second temperature is greater than 3 ℃, this indicates that the cold generated by the cold source 111 of the laboratory is large, the cold recovery system of the laboratory enters the cold recovery mode, the cold of the cold source 111 of the laboratory enters the heat exchange module 130 through the cold source generating side loop 110, and the cooling liquid of the application side loop 120 exchanges heat through the heat exchange module 130, so as to realize cold recovery. The loop conversion module 121 conducts the path between the heat exchange module 130 and the loop conversion module 121, and at this time, the cooling liquid of the application side loop 120 can be output to the first water tank 122, and the cooling capacity is stored by the first water tank 122. When the first temperature and the second temperature approach to be equal, or the difference value of the first temperature and the second temperature is within a preset range, the loop conversion module 121 may close the path with the heat exchange module 130, thereby stopping heat exchange.
Similarly, in the heating mode, if the first temperature is greater than the second temperature, and the difference between the first temperature and the second temperature also meets the requirement, for example, the first temperature is greater than the second temperature, and the difference between the first temperature and the second temperature is greater than 3 ℃, it is indicated that the heat generated by the cold heat source 111 of the laboratory is greater, and then the heat recovery mode may be entered, the heat of the cold heat source 111 of the laboratory enters the heat exchange module 130 through the cold heat source generating side loop 110, and the cooling liquid of the application side loop 120 exchanges heat through the heat exchange module 130, so as to realize heat recovery. The loop conversion module 121 conducts the path between the heat exchange module 130 and the loop conversion module 121, and at this time, the cooling liquid of the application side loop 120 can be output to the first water tank 122, and the heat is stored by the first water tank 122. When the first temperature and the second temperature approach to be equal, or the difference value of the first temperature and the second temperature is within a preset range, the loop conversion module 121 may close the path with the heat exchange module 130, thereby stopping heat exchange.
In the refrigeration mode, if 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 temperature and the second temperature is less than 2 ℃, which means that the cold energy stored in the first water tank 122 is better than the cold energy generated by the cold and heat source 111 in the laboratory, the application side self-circulation mode can be entered, the loop conversion module 121 only conducts the path between the first output end and the first input end, and the coolant of the application side loop 120 is directly output from the first output end through the first input end and returns to the first input end after passing through the first water tank 122, thereby forming a self-circulation path. Therefore, the application side can realize cooling by using the cooling capacity stored in the first water tank 122.
Similarly, in the heating mode, if the first temperature is less than the second temperature or the first temperature is greater than the second temperature, but the difference between the first temperature and the second temperature is less than 2 ℃, it means that the heat stored in the first water tank 122 is better than the heat generated by the cold and heat source 111 of the laboratory, and the self-circulation mode can be entered, the loop conversion module 121 only conducts the path between the first output end and the first input end, the coolant of the application side loop 120 is directly output from the first output end through the first input end, and returns to the first input end after passing through the first water tank 122, thereby forming a self-circulation path. Accordingly, the application side can realize heat supply using the heat stored in the first water tank 122.
Fig. 2 is a schematic structural diagram of a laboratory cold and heat recovery system according to an embodiment of the present invention, referring to fig. 2, the laboratory cold and heat recovery system further includes a cold and hot water unit 160 and a third sensing unit 170, the cold and hot water unit 160 is disposed between the first output end and the first water tank 122, the third sensing unit 170 is disposed at an input side of the cold and hot water unit 160, the third sensing unit 170 is configured to detect a third temperature of a cooling liquid at the input side of the cold and hot water unit 160, and the cold and hot water unit 160 is configured to control an output amount of cold or heat of the application side loop 120 according to the third temperature.
Specifically, the hot and cold water unit 160 is a device capable of generating cold water and hot water simultaneously, and mainly performs heat energy transfer and conversion by a heat pump technology, thereby providing cooling and heating functions. A cold and hot water unit 160 is disposed between the first output end and the first water tank 122, that is, the cooling liquid enters the first water tank 122 after passing through the cold and hot water unit 160, and according to the cooling or heating requirement of the application side, the temperature of the cooling liquid can be regulated and controlled by starting and stopping the cold and hot water unit 160, so as to realize the regulation of the cooling capacity or the heat output quantity of the application side loop 120. The start-stop control of the cold-hot water unit 160 can be adjusted according to the relation between the third temperature and the preset temperature, for example, in a refrigeration mode, if the third temperature is more than or equal to 12 ℃, auxiliary cooling capacity is provided, and the cold-hot water unit is stopped when the third temperature is less than 10 ℃, so that energy consumption is saved. In the heating mode, if the third temperature is less than or equal to 38 ℃, auxiliary heat is provided, and the heating is stopped when the third temperature is more than 40 ℃, so that energy consumption is saved.
Fig. 3 is a schematic structural diagram of still another laboratory cold and heat recovery system according to an embodiment of the present invention, referring to fig. 3, the loop conversion module 121 includes a first switch unit K1, a second switch unit K2, and a third switch unit K3;
The first end of the first switch unit K1 is connected with the heat exchange module 130, the second end of the first switch unit K1 is used as a first input end, the first end of the second switch unit K2 is connected with the heat exchange module 130, the second end of the second switch unit K2 is used as a first output end, the first end of the third switch unit K3 is connected with the second end of the first switch unit K1, and the second end of the third switch unit K3 is connected with the second end of the second switch unit K2;
In the cold or heat recovery mode, the first switch unit K1 and the second switch unit K2 are in an on state, the third switch unit K3 is in an off state, and in the application side self-circulation mode, the first switch unit K1 and the second switch unit K2 are in an off state, and the third switch unit K3 is in an on state.
Specifically, in the cooling mode, if the first temperature is less than the second temperature, and the difference between the first temperature and the second temperature also meets the requirement, for example, the first temperature is less than the second temperature, and the difference between the first temperature and the second temperature is greater than 3 ℃, this indicates that the cold energy generated by the cold energy source 111 in the laboratory is greater, and the cold energy source enters the cold energy recovery mode, the cold energy of the cold energy source 111 in the laboratory enters the heat exchange module 130 through the cold energy source generating side loop 110, and the cooling liquid of the application side loop 120 exchanges heat through the heat exchange module 130, so as to realize cold energy recovery. The first switch unit K1 and the second switch unit K2 are turned on, and the third switch unit K3 is turned off, so that the cooling liquid in the application side loop 120 can be output to the first water tank 122, and the cooling capacity is stored by the first water tank 122. When the first temperature and the second temperature approach to be equal, or the difference value of the first temperature and the second temperature is within a preset range, the loop conversion module 121 may close the path with the heat exchange module 130, thereby stopping heat exchange.
Similarly, in the heating mode, if the first temperature is greater than the second temperature, and the difference between the first temperature and the second temperature also meets the requirement, for example, the first temperature is greater than the second temperature, and the difference between the first temperature and the second temperature is greater than 3 ℃, it is indicated that the heat generated by the cold heat source 111 of the laboratory is greater, and then the heat recovery mode may be entered, the heat of the cold heat source 111 of the laboratory enters the heat exchange module 130 through the cold heat source generating side loop 110, and the cooling liquid of the application side loop 120 exchanges heat through the heat exchange module 130, so as to realize heat recovery. The first switch unit K1 and the second switch unit K2 are turned on, and the third switch unit K3 is turned off, so that the coolant in the application side loop 120 can be output to the first water tank 122, and the heat is stored in the first water tank 122. When the first temperature and the second temperature approach to be equal, or the difference value of the first temperature and the second temperature is within a preset range, the loop conversion module 121 may close the path with the heat exchange module 130, thereby stopping heat exchange.
In the refrigeration mode, if 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 temperature and the second temperature is less than 2 ℃, it means that the cold energy stored in the first water tank 122 is better than the cold energy generated by the cold and heat source 111 in the laboratory, and 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, the third switch unit K3 is in the on state, the cooling liquid of the application side loop 120 is directly output from the first output end through the first input end, and returns to the first input end after passing through the first water tank 122, so as to form a self-circulation path. Therefore, the application side can realize cooling by using the cooling capacity stored in the first water tank 122.
Similarly, in the heating mode, if the first temperature is less than the second temperature, or the first temperature is greater than the second temperature, but the difference between the first temperature and the second temperature is less than 2 ℃, it means that the heat stored in the first water tank 122 is better than the heat generated by the cold and heat source 111 in the laboratory, and 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, the third switch unit K3 is in the on state, the cooling liquid of the application side loop 120 is directly output from the first output end through the first input end, and returns to the first input end after passing through the first water tank 122, so as to form the self-circulation path. Accordingly, the application side can realize heat supply using the heat stored in the first water tank 122.
Fig. 4 is a schematic structural diagram of another laboratory cold and heat recovery system according to an embodiment of the present invention, referring to fig. 4, the loop conversion module 121 further includes a fourth switch unit K4, a first end of the fourth switch unit K4 is connected to a second end of the first switch unit K1, and a second end of the fourth switch unit K4 is connected to the first water tank 122.
Specifically, when the fourth switch unit K4 is in the on state, the hot and cold water unit 160 is bypassed, so that the hot and cold water unit 160 can be in the off state in the cold energy or heat recovery mode, thereby reducing the power consumption. At this time, after the cooling liquid in the application side loop 120 exchanges heat through the heat exchange module 130, the cooling liquid in the application side loop 120 can be directly output to the first water tank 122, and all the cooling capacity or heat is stored by the first water tank 122, so that the storage efficiency is improved, and the loss of the cooling capacity or heat is avoided.
When the fourth switch unit K4 is in the off state, the hot and cold water unit 160 may be in an on state, and in the cold energy or heat recovery mode, the hot and cold water unit 160 may assist in supplying cold or heat to the application side by adjusting the output of cold energy or heat of the application side loop 120 through the third temperature. Similarly, in the application-side self-circulation mode, the hot and cold water unit 160 may also assist in cooling or heating the application side by adjusting the output of the cooling or heating amount of the application-side circuit 120 by the third temperature.
By way of example, by the control program setting a specific time period, such as 20:00 pm to 07:00 am, the application demand for heat or cold on the application side is low during such a time period, and thus the total recovery of cold or heat is possible.
For example, in the cooling mode, if the first temperature is less than the second temperature, and the difference between the first temperature and the second temperature also meets the requirement, for example, the first temperature is less than the second temperature, and the difference between the first temperature and the second temperature is greater than 3 ℃, this indicates that the cold energy generated by the cold energy source 111 in the laboratory is greater, and the cold energy source enters the cold energy recovery mode, the cold energy of the cold energy source 111 in the laboratory enters the heat exchange module 130 through the cold energy source generating side loop 110, and the cooling liquid in the application side loop 120 exchanges heat through the heat exchange module 130, so as to realize cold energy recovery. The first switch unit K1, the second switch unit K2, and the fourth switch unit K4 are in an on state, the third switch unit K3 is in an off state, and at this time, the cooling liquid of the application side loop 120 may be output to the first water tank 122, and the cooling capacity is stored entirely by the first water tank 122. When the first temperature and the second temperature approach to be equal, or the difference value of the first temperature and the second temperature is within a preset range, the loop conversion module 121 may close the path with the heat exchange module 130, thereby stopping heat exchange.
Similarly, in the heating mode, if the first temperature is greater than the second temperature, and the difference between the first temperature and the second temperature also meets the requirement, for example, the first temperature is greater than the second temperature, and the difference between the first temperature and the second temperature is greater than 3 ℃, it is indicated that the heat generated by the cold heat source 111 of the laboratory is greater, and then the heat recovery mode may be entered, the heat of the cold heat source 111 of the laboratory enters the heat exchange module 130 through the cold heat source generating side loop 110, and the cooling liquid of the application side loop 120 exchanges heat through the heat exchange module 130, so as to realize heat recovery. The first switch unit K1, the second switch unit K2, and the fourth switch unit K4 are in an on state, the third switch unit K3 is in an off state, and at this time, the cooling liquid of the application side loop 120 may be output to the first water tank 122, and all heat is stored by the first water tank 122. When the first temperature and the second temperature approach to be equal, or the difference value of the first temperature and the second temperature is within a preset range, the loop conversion module 121 may close the path with the heat exchange module 130, thereby stopping heat exchange.
Whereas during normal periods, for example 07:00 in the morning to 20:00 in the evening, there is a need for heating or cooling applications on the application side during such periods, so that part of the heat or cooling can be recovered and part directly participates in cooling or heating.
For example, in the cooling mode, if the first temperature is less than the second temperature, and the difference between the first temperature and the second temperature also meets the requirement, for example, the first temperature is less than the second temperature, and the difference between the first temperature and the second temperature is greater than 3 ℃, this indicates that the cold energy generated by the cold energy source 111 of the laboratory is greater, and the cold energy source enters a partial cold energy recovery mode, the cold energy of the cold energy source 111 of the laboratory enters the heat exchange module 130 through the cold energy source generating side loop 110, and the cooling liquid of the application side loop 120 exchanges heat through the heat exchange module 130, so as to realize cold energy recovery. The first switch unit K1 and the second switch unit K2 are in an on state, the third switch unit K3 and the fourth switch unit K4 are in an off state, and at this time, the cooling liquid of the application side loop 120 passes through the cold and hot water unit 160, and is dispersed from the terminal device (fan or air cabinet) to the application side for cooling through the regulation of the cold and hot water unit 160. Part of the cold is output to the first water tank 122, and the cold is stored by the first water tank 122.
Similarly, in the heating mode, if the first temperature is greater than the second temperature, and the difference between the first temperature and the second temperature also meets the requirement, for example, the first temperature is greater than the second temperature, and the difference between the first temperature and the second temperature is greater than 3 ℃, it is indicated that the heat generated by the cold heat source 111 of the laboratory is greater, and then the heat recovery mode may be entered, the heat of the cold heat source 111 of the laboratory enters the heat exchange module 130 through the cold heat source generating side loop 110, and the cooling liquid of the application side loop 120 exchanges heat through the heat exchange module 130, so as to realize heat recovery. The first switch unit K1 and the second switch unit K2 are in an on state, the third switch unit K3 and the fourth switch unit K4 are in an off state, and at this time, the cooling liquid of the application side loop 120 passes through the cold and hot water unit 160, and is dispersed from the terminal device (fan or air cabinet) to the application side for heating through the regulation and control of the cold and hot water unit 160. Part of the heat is output to the first water tank 122, and the heat is stored by the first water tank 122. Based on the above, when the first switch unit K1 and the second switch unit K2 are in the on state and the third switch unit K3 and the fourth switch unit K4 are in the off state, the cold or heat generated by the cold source 111 in the laboratory can directly participate in the cooling or heating of the application side, thereby further improving the utilization rate of the energy.
In the 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 temperature and the second temperature is less than 2 ℃, which indicates that the cooling capacity stored in the first water tank 122 is better than the cooling capacity generated by the cooling source 111 in the laboratory, and then 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, the third switch unit K3 and the fourth switch unit K4 are in the on state, the cooling liquid of the application side loop 120 is directly output from the first output end through the first input end, and at this time, the cooling liquid of the application side loop 120 is dispersed to the application side for cooling through the cooling water unit 160 by the end device (fan or air cabinet) through the control of the cooling water unit 160. Part of the cold is output to the first water tank 122, and the cold is stored by the first water tank 122. The cooling liquid returns to the first input end after passing through the first water tank 122, forming a self-circulation path. Accordingly, the application side can realize cooling using the cooling capacity stored in the first water tank 122 and the cooling and heating water unit 160.
Similarly, in the heating mode, if the first temperature is less than the second temperature or the first temperature is greater than the second temperature, but the difference between the first temperature and the second temperature is less than 2 ℃, it means that the heat stored in the first water tank 122 is better than the heat generated by the cold and hot source 111 in the laboratory, and 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, the third switch unit K3 and the fourth switch unit K4 are in the on state, the cooling liquid of the application side loop 120 is directly output from the first output end through the first input end, and at this time, the cooling liquid of the application side loop 120 is dissipated to the application side through the cold and hot water unit 160 through the regulation of the cold and hot water unit 160 and the end device (fan or air cabinet). Part of the heat is output to the first water tank 122, and the heat is stored by the first water tank 122. The cooling liquid returns to the first input end after passing through the first water tank 122, forming a self-circulation path. Accordingly, the application side can realize cooling using the heat stored in the first water tank 122 and the hot and cold water unit 160.
Optionally, with continued reference to fig. 4, the cold heat source generating side circuit 110 includes a second water tank 410 and a first driving unit 420, the heat exchange module 130 is connected to the second water tank 410, the second water tank 410 is connected to the first driving unit 420, the first driving unit 420 is connected to the cold heat source 111 of the laboratory, and the cold heat source 111 of the laboratory is connected to the heat exchange module 130. Specifically, the second water tank 410 also has a heat preservation function, and can store cold energy or heat generated by the cold and heat source 111 of the laboratory, and provide a storage space for the cooling liquid of the cold and heat source generating side loop 110, and the first driving unit 420 may be a water pump, and is disposed at the output side of the second water tank 410, and the first driving unit 420 is used for improving the flowing power of the cooling liquid. Optionally, the application side loop 120 includes a second driving unit 430, and the second driving unit 430 is disposed between the first water tank 122 and the first input terminal. Specifically, the second driving unit 430 may be a water pump, and is disposed at an output side of the first water tank 122, and the second driving unit 430 is used to increase power of the flow of the cooling liquid. Alternatively, the heat exchange module 130 employs a plate heat exchanger. The plate heat exchanger is a high-efficiency heat exchanger formed by stacking a series of metal sheets with certain corrugated shapes. Thin rectangular channels are formed between the various plates through which heat is exchanged. The heat exchanger has the characteristics of high heat exchange efficiency, small heat loss, compact and light structure, small occupied area, long service life and the like.
Fig. 5 is a schematic flow chart of a method for recovering cold and heat of a laboratory according to an embodiment of the present invention, which is implemented by the laboratory cold and heat recovery system in any of the above embodiments, and the device may be implemented in hardware and/or software. The method specifically comprises the following steps:
S110, in a cold energy or heat recovery mode, the loop conversion module 121 conducts a passage between the heat exchange module 130 and the loop conversion module 121, the cooling liquid of the application side loop 120 is input through a first input end, is output through a first output end after heat exchange recovery is performed through the heat exchange module 130, and stores the cold energy or heat through the first water tank 122;
Specifically, the cold or heat recovery mode is a working mode of the laboratory cold or heat recovery system, and the cold or heat source 111 of the laboratory outputs and stores the remaining cold or heat. In the cold or heat recovery mode, the cold or heat of the cold or heat source 111 in the laboratory enters the heat exchange module 130 through the cold or heat source generating side loop 110, the cooling liquid of the application side loop 120 is recovered through the heat exchange module 130, the loop conversion module 121 conducts the passage between the heat exchange module 130 and the loop conversion module 121, and at this time, the cooling liquid of the application side loop 120 can be output to the first water tank 122, and the cold or heat is stored by the first water tank 122.
S120, in the self-circulation mode at the application side, the loop conversion module 121 conducts the path between the first output end and the first input end, the cooling liquid of the loop at the application side 120 is input through the first input end, output from the first output end, returns to the first input end after passing through the first water tank 122, and forms a self-circulation path.
Specifically, the application side self-circulation mode is an operation mode of the laboratory cold and heat recovery system, and cold or heat is provided to the application side through self-circulation by using the cold or heat stored in the first water tank 122. In the application-side self-circulation mode, the loop conversion module 121 only conducts the path between the first output end and the first input end, and the cooling liquid of the application-side loop 120 is directly output from the first output end through the first input end, returns to the first input end after passing through the first water tank 122, and forms a self-circulation path. Accordingly, the application side can realize cooling or heating by using the cooling or heating amount stored in the first water tank 122.
Optionally, the laboratory cold and heat recovery system further includes a first sensing unit 140 and a second sensing unit 150, wherein the first sensing unit 140 is disposed in the cold and heat source generating side loop 110 and is used for detecting a first temperature of the cold and heat source generating side loop 110;
The method comprises the following steps:
When the cold heat source 111 of the laboratory supplies cold or heat, the cold or heat recovery mode is entered or the application-side self-circulation mode is entered according to the relationship between the first temperature and the second temperature.
Specifically, the first temperature may represent the temperature of the cooling liquid in the cold-heat source generating side circuit 110, and the first sensing unit 140 may be disposed at the output side of the cold-heat source 111 of the laboratory or at the input side of the heat exchange module 130, and thus, the first sensing unit 140 may detect the temperature of the cooling liquid entering the heat exchange module 130. The second temperature may represent the temperature within the first tank 122, that is, the stored energy temperature of the application side loop 120.
Therefore, the laboratory cold-heat recovery system can be controlled to enter a cold-heat recovery mode or an application-side self-circulation mode according to the relation between the first temperature and the second temperature.
For example, in the cooling mode, if the first temperature is less than the second temperature, and the difference between the first temperature and the second temperature also meets the requirement, for example, the first temperature is less than the second temperature, and the difference between the first temperature and the second temperature is greater than 3 ℃, this indicates that the cold generated by the cold source 111 of the laboratory is large, the cold recovery system of the laboratory enters the cold recovery mode, the cold of the cold source 111 of the laboratory enters the heat exchange module 130 through the cold source generating side loop 110, and the cooling liquid of the application side loop 120 exchanges heat through the heat exchange module 130, so as to realize cold recovery. The loop conversion module 121 conducts the path between the heat exchange module 130 and the loop conversion module 121, and at this time, the cooling liquid of the application side loop 120 can be output to the first water tank 122, and the cooling capacity is stored by the first water tank 122. When the first temperature and the second temperature approach to be equal, or the difference value of the first temperature and the second temperature is within a preset range, the loop conversion module 121 may close the path with the heat exchange module 130, thereby stopping heat exchange.
Similarly, in the heating mode, if the first temperature is greater than the second temperature, and the difference between the first temperature and the second temperature also meets the requirement, for example, the first temperature is greater than the second temperature, and the difference between the first temperature and the second temperature is greater than 3 ℃, it is indicated that the heat generated by the cold heat source 111 of the laboratory is greater, and then the heat recovery mode may be entered, the heat of the cold heat source 111 of the laboratory enters the heat exchange module 130 through the cold heat source generating side loop 110, and the cooling liquid of the application side loop 120 exchanges heat through the heat exchange module 130, so as to realize heat recovery. The loop conversion module 121 conducts the path between the heat exchange module 130 and the loop conversion module 121, and at this time, the cooling liquid of the application side loop 120 can be output to the first water tank 122, and the heat is stored by the first water tank 122. When the first temperature and the second temperature approach to be equal, or the difference value of the first temperature and the second temperature is within a preset range, the loop conversion module 121 may close the path with the heat exchange module 130, thereby stopping heat exchange.
In the refrigeration mode, if 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 temperature and the second temperature is less than 2 ℃, which means that the cold energy stored in the first water tank 122 is better than the cold energy generated by the cold and heat source 111 in the laboratory, the application side self-circulation mode can be entered, the loop conversion module 121 only conducts the path between the first output end and the first input end, and the coolant of the application side loop 120 is directly output from the first output end through the first input end and returns to the first input end after passing through the first water tank 122, thereby forming a self-circulation path. Therefore, the application side can realize cooling by using the cooling capacity stored in the first water tank 122.
Similarly, in the heating mode, if the first temperature is less than the second temperature, or the first temperature is less than the second temperature, but the difference between the first temperature and the second temperature is less than 2 ℃, it means that the heat stored in the first water tank 122 is better than the heat generated by the cold and heat source 111 of the laboratory, and the self-circulation mode can be entered, the loop conversion module 121 only conducts the path between the first output end and the first input end, the cooling liquid of the application side loop 120 is directly output from the first output end through the first input end, and returns to the first input end after passing through the first water tank 122, thereby forming the self-circulation path. Accordingly, the application side can realize heat supply using the heat stored in the first water tank 122.
It should be noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present invention, and not for limiting the same, and although the present invention has been described in detail with reference to the above-mentioned embodiments, it should be understood by those skilled in the art that the technical solution described in the above-mentioned embodiments may be modified or some technical features may be equivalently replaced, and these modifications or substitutions do not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solution of the embodiments of the present invention.
Claims (7)
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| CN201532055U (en) * | 2009-08-18 | 2010-07-21 | 康奈尔(上海)能源技术有限公司 | Water chilling unit heat recovery system with heat storage function |
| CN221427097U (en) * | 2023-12-08 | 2024-07-26 | 平高帕拉特(河南)能源科技有限公司 | Server cluster heat recovery system and server cluster waste heat recovery and utilization system |
| CN221666141U (en) * | 2023-10-11 | 2024-09-06 | 山东三齐能源有限公司 | A solar heating system |
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| JP2007107773A (en) * | 2005-10-12 | 2007-04-26 | Matsushita Electric Ind Co Ltd | Thermal storage device, heat pump system and solar system |
| JP5510506B2 (en) * | 2012-08-09 | 2014-06-04 | 三菱電機株式会社 | Solar system |
| CN106765760A (en) * | 2016-12-22 | 2017-05-31 | 广东申菱环境系统股份有限公司 | A kind of heating system for reclaiming computer room liquid-cooling heat radiation amount |
| CN107741104A (en) * | 2017-10-25 | 2018-02-27 | 北京百度网讯科技有限公司 | Data center's waste heat recovery energy supplying system and data center |
| CN111750721A (en) * | 2020-06-17 | 2020-10-09 | 中国建筑科学研究院有限公司 | Mobile cooling and heat recovery device and electric heating heating device suitable for villages and towns based on mobile heat storage and heat exchange module |
| CN112762751A (en) * | 2021-01-22 | 2021-05-07 | 中益能(北京)供热技术有限公司 | Waste heat recovery system and heat supply system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201532055U (en) * | 2009-08-18 | 2010-07-21 | 康奈尔(上海)能源技术有限公司 | Water chilling unit heat recovery system with heat storage function |
| CN221666141U (en) * | 2023-10-11 | 2024-09-06 | 山东三齐能源有限公司 | A solar heating system |
| CN221427097U (en) * | 2023-12-08 | 2024-07-26 | 平高帕拉特(河南)能源科技有限公司 | Server cluster heat recovery system and server cluster waste heat recovery and utilization system |
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