CN117167845A - Adsorption type air treatment system and control method thereof - Google Patents
Adsorption type air treatment system and control method thereof Download PDFInfo
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- CN117167845A CN117167845A CN202311150737.7A CN202311150737A CN117167845A CN 117167845 A CN117167845 A CN 117167845A CN 202311150737 A CN202311150737 A CN 202311150737A CN 117167845 A CN117167845 A CN 117167845A
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- 238000001179 sorption measurement Methods 0.000 title claims abstract description 205
- 238000000034 method Methods 0.000 title claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 146
- 239000000498 cooling water Substances 0.000 claims abstract description 81
- 238000005057 refrigeration Methods 0.000 claims abstract description 54
- 239000011248 coating agent Substances 0.000 claims abstract description 51
- 238000000576 coating method Methods 0.000 claims abstract description 51
- 239000002274 desiccant Substances 0.000 claims description 40
- 238000001704 evaporation Methods 0.000 claims description 29
- 230000008929 regeneration Effects 0.000 claims description 8
- 238000011069 regeneration method Methods 0.000 claims description 8
- 238000007791 dehumidification Methods 0.000 claims description 6
- 230000008439 repair process Effects 0.000 claims description 2
- 238000011084 recovery Methods 0.000 abstract description 7
- 239000002918 waste heat Substances 0.000 abstract description 6
- 230000002411 adverse Effects 0.000 abstract description 3
- 238000001035 drying Methods 0.000 abstract description 3
- 230000008020 evaporation Effects 0.000 description 15
- 239000000446 fuel Substances 0.000 description 13
- 238000009833 condensation Methods 0.000 description 6
- 230000005494 condensation Effects 0.000 description 6
- 230000001172 regenerating effect Effects 0.000 description 6
- 238000001816 cooling Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
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- Sorption Type Refrigeration Machines (AREA)
Abstract
The invention discloses an adsorption type air treatment system, which comprises an adsorption type refrigeration system, a coating drying air treatment system, a hot water loop circulation system, a cooling water loop circulation system and a chilled water loop circulation system, wherein the hot water loop circulation system, the cooling water loop circulation system and the chilled water loop circulation system are respectively connected with the adsorption type refrigeration system and are used for providing hot water, cooling water and chilled water for the adsorption type refrigeration system; the cooling water loop circulation system and the chilled water loop circulation system are respectively connected with the coating dry air treatment system and used for providing a cold source and a heat source for the coating dry air treatment system. The invention decouples sensible heat and latent heat of air treatment by integrating the adsorption refrigeration system and the coating dry air treatment system, thereby avoiding the adverse phenomenon that the cooling water temperature of the traditional waste heat recovery system is lower than the target dew point temperature of air to dehumidify.
Description
Technical Field
The invention relates to an adsorption type air treatment system, and also relates to a control method of the adsorption type air treatment system, belonging to the technical field of air treatment systems.
Background
The generation of new energy sources such as wind, light and the like has the defect of uncontrollable, and the electric energy of the new energy sources is stored in a mode of producing hydrogen by electrolyzing water, so that the method is a very good solution. Therefore, hydrogen energy application scenes are greatly developed in various countries. The fuel cell can directly convert the chemical energy of hydrogen into electric energy through electrochemical reflection, is not limited by Carnot cycle because of no combustion, has the remarkable advantage of high energy conversion efficiency, and can be widely applied to various mechanical equipment.
The heat dissipation requirements of the fuel cell during use can reduce the overall energy efficiency of the fuel cell system if this energy is not utilized. Many researchers and engineers have constructed a fuel cell waste heat recovery system to fully utilize the heat discharged from the fuel cell system, thereby improving the energy utilization efficiency of the overall system. However, most of the cooling, heating and power combined supply systems based on the waste heat recovery of the fuel cell at present adopt chilled water to provide a cold source, and cannot meet the requirements of some customers, such as the air introduced into an air conditioner room needs to be dehumidified. When the traditional air treatment method is adopted, the temperature of chilled water needs to be reduced below the target dew point temperature of air to dehumidify the air, so that the evaporation temperature of an evaporator in an adsorption refrigeration system is greatly reduced, and the refrigeration efficiency of the whole system is reduced. Therefore, the patent provides a novel efficient mixed adsorption type air treatment system driven by a low-quality heat source based on a fuel cell and a control method thereof. By the method, the requirement of customers on air humidity treatment can be met, and the damp-heat load and the sensible heat load of the air can be decoupled, so that the evaporation temperature of an evaporator in the fuel cell waste heat recovery system is increased, and the energy utilization efficiency is improved.
In chinese patent application (publication No. CN 115632138A), a high temperature fuel cell cogeneration system is proposed, in which a fuel cell converts chemical energy of fuel and oxidant into electric energy and heat, unreacted fuel is fed into a combustion chamber and air is completely combusted, and high temperature air coming out of an air preheater is fed into a lithium bromide absorption refrigerator to drive the refrigerator to operate, thereby realizing the functions of generating electricity, cooling and heating, and improving the utilization rate of resources. But this patent does not provide a cogeneration system with air handling based on fuel cell low temperature heat source drive.
Disclosure of Invention
The invention aims to provide an adsorption type air treatment system, which solves the problem of achieving the efficient utilization of a low-quality heat source on the premise of meeting the dehumidification requirement of customer air.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
an adsorption type air treatment system comprises an adsorption type refrigerating system, a coating dry air treatment system, a hot water loop circulation system, a cooling water loop circulation system and a chilled water loop circulation system,
the hot water loop circulation system, the cooling water loop circulation system and the chilled water loop circulation system are respectively connected with the adsorption refrigeration system and used for providing hot water, cooling water and chilled water for the adsorption refrigeration system;
the cooling water loop circulation system and the chilled water loop circulation system are respectively connected with the coating dry air treatment system and used for providing a cold source and a heat source for the coating dry air treatment system.
Wherein preferably, the adsorption refrigeration system comprises a hot water inlet, a hot water outlet, a cooling water inlet, a cooling water outlet, a chilled water inlet and a chilled water outlet,
the hot water output end of the hot water loop circulation system is connected with the hot water inlet of the adsorption refrigeration system, and the hot water input end is connected with the hot water outlet and inlet of the adsorption refrigeration system;
the first cooling water output end of the cooling water loop circulation system is connected with the cooling water inlet of the adsorption refrigeration system, and the first cooling water input end is connected with the cooling water outlet of the adsorption refrigeration system;
the first chilled water output end of the chilled water loop circulation system is connected with the chilled water inlet of the adsorption refrigeration system, and the first chilled water input end is connected with the chilled water outlet of the adsorption refrigeration system.
Wherein preferably, the coating drying air treatment system comprises a cold source inlet, a cold source outlet, a heat source inlet and a heat source outlet,
the second chilled water output end of the chilled water loop circulation system is connected with the cold source inlet of the coating dry air treatment system, and the second chilled water input end is connected with the cold source outlet of the coating dry air treatment system;
the second output end of the cooling water loop circulation system is connected with the heat source inlet of the coating dry air treatment system, and the second cooling water input end is connected with the heat source outlet of the coating dry air treatment system.
Wherein preferably, the adsorption refrigeration system comprises a first adsorption chamber, a first switch valve, a third switch valve, a sixth three-way valve, a seventh three-way valve, an eighth three-way valve, a ninth three-way valve and a sixteenth switch valve,
the first end of the first adsorption chamber is connected with one end of a first switch valve, the second end of the first adsorption chamber is connected with a sixteenth switch valve, the third end of the first adsorption chamber is connected with one end of a third switch valve, the fourth end of the first adsorption chamber is connected with the second valve port of an eighth three-way valve and the second valve port of a ninth three-way valve, and the fifth end of the first adsorption chamber is connected with the second valve port of a sixth three-way valve and the third valve port of a seventh three-way valve.
Wherein preferably, the adsorption refrigeration system further comprises a second adsorption chamber, a second switch valve and a fourth switch valve,
the first end of the second adsorption chamber is connected with one end of the second switch valve, the second end of the second adsorption chamber is connected with the third valve port of the sixth three-way valve and the second valve port of the seventh three-way valve, the third end of the second adsorption chamber is connected with the third valve port of the eighth three-way valve and the third valve port of the ninth three-way valve, the fourth end of the second adsorption chamber is connected with one end of the fourth switch valve, and the fifth end of the second adsorption chamber is connected with the second end of the first adsorption chamber.
Wherein preferably, the adsorption refrigeration system further comprises a condensing chamber and an evaporating chamber,
the first end of the condensing chamber is connected with the other end of the first switch valve, the second end of the condensing chamber is connected with the cooling water inlet, the third end of the condensing chamber is connected with the first valve port of the sixth three-way valve, the fourth end of the condensing chamber is connected with the other end of the second switch valve, and the fifth end of the condensing chamber is connected with one end of the fifth throttle valve;
the first end of the evaporating chamber is connected with the chilled water inlet, the second end of the evaporating chamber is connected with the other end of the third switch valve, the third end of the evaporating chamber is connected with the other end of the fifth throttle valve, the fourth end of the evaporating chamber is connected with the other end of the fourth switch valve, and the fifth end of the evaporating chamber is connected with the chilled water outlet.
Wherein preferably the coated dry air treatment system comprises a first coated desiccant heat exchanger, a second coated desiccant heat exchanger, a first axial fan, a second axial fan, a twelfth three-way valve, a thirteenth three-way valve, a fourteenth three-way valve and a fifteenth three-way valve,
the first end of the first coating desiccant heat exchanger is connected with the second valve port of the twelfth three-way valve, and the second end of the first coating desiccant heat exchanger is connected with the second valve port of the thirteenth three-way valve;
the first end of the second coating desiccant heat exchanger is connected with the third valve opening of the fourteenth three-way valve, and the second end of the second coating desiccant heat exchanger is connected with the third valve opening of the fifteenth three-way valve.
A control method of an adsorption type air treatment system for controlling an adsorption type air treatment system according to any one of claims 1 to 7, comprising a control method of an adsorption type refrigerating system,
s10: preheating the first adsorption chamber and precooling the second adsorption chamber;
s11: desorbing the first adsorption chamber and adsorbing the second adsorption chamber;
s12: performing a regeneration from the first adsorption chamber to the second adsorption chamber;
s13: performing a regenerative process from the first adsorption chamber to the second adsorption chamber;
in the cycle of step S14 to step S17, the first adsorption chamber and the second adsorption chamber respectively take the actions opposite to those in steps S10 to S13, but the operation principle is the same.
Wherein preferably S100: closing the first switch valve, the second switch valve, the third switch valve and the fourth switch valve;
s101: hot water in the hot water loop circulation system enters the first valve port of the eleventh three-way valve through the hot water inlet, flows out of the third valve port of the eleventh three-way valve, enters the first valve port of the seventh three-way valve, and flows out of the third valve port of the seventh three-way valve into the first adsorption chamber;
s102: the hot water entering the first adsorption chamber exchanges heat with the first adsorption chamber, so that the temperature and the pressure of the first adsorption chamber are increased;
s103: the hot water flowing out of the first adsorption chamber passes through the second valve port and the first valve port of the ninth three-way valve, enters the first valve port of the thirteenth through valve, flows out of the third valve port of the thirteenth through valve, and finally flows into the hot water loop circulation system again;
s104: cooling water in the cooling water loop circulation system enters the condensing chamber through the cooling water inlet, cooling water flowing out of the condensing chamber enters the first valve port of the sixth three-way valve, and flows out of the third valve port of the sixth three-way valve into the second adsorption chamber;
s105: the cooling water entering the second adsorption chamber exchanges heat with the second adsorption chamber, and the temperature and the pressure of the second adsorption chamber are reduced;
s106: the cooling water flowing out of the second adsorption chamber flows out of the first valve port of the eighth three-way valve through the third valve port of the eighth three-way valve, and finally flows into the cooling water loop circulation system again.
Preferably, the method also comprises a control method of a coating dry air treatment system,
s20: starting the first coating desiccant heat exchanger to be in a dehumidification mode, and dehumidifying water vapor in the air;
s21: simultaneously with step S20, the second coated desiccant heat exchanger is activated to a regeneration mode, and the desiccant inside the second coated desiccant heat exchanger is dried.
Compared with the prior art, the invention decouples sensible heat and latent heat of air treatment by integrating the adsorption type refrigerating system and the coating dry air treatment system, avoids the adverse phenomenon that the cooling water temperature of the traditional waste heat recovery system is lower than the target dew point temperature of air to dehumidify, and can raise the evaporating temperature of the evaporating chamber of the adsorption type refrigerating system, thereby improving the refrigerating efficiency of the adsorption type refrigerating system and meeting the requirement of customers on dehumidifying air.
Drawings
FIG. 1 is a schematic diagram of an adsorption air treatment system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the operation of the adsorption refrigeration system of FIG. 1;
fig. 3 is a schematic diagram of the operation of the coating dry air treatment system of fig. 1.
Detailed Description
The technical contents of the present invention will be described in detail with reference to the accompanying drawings and specific examples.
As shown in fig. 1, an adsorption type air treatment system provided by the embodiment of the invention comprises an adsorption type refrigeration system 1, a coating dry air treatment system 2, a hot water loop circulation system 3, a cooling water loop circulation system 4 and a chilled water loop circulation system 5. The hot water loop circulation system 3, the cooling water loop circulation system 4 and the chilled water loop circulation system 5 are respectively connected with the adsorption refrigeration system 1, and are used for providing hot water, cooling water and chilled water for the adsorption refrigeration system 1. The cooling water loop circulation system 4 and the chilled water loop circulation system 5 are respectively connected with the coating dry air treatment system 2 and are used for providing a cold source and a heat source for the coating dry air treatment system 2.
Specifically, the adsorption refrigeration system 1 has 3 water circuits for circulation therein, each including an inlet and an outlet. Specifically, the adsorption refrigeration system 1 includes a hot water inlet 111, a hot water outlet 112, a cooling water inlet 121, a cooling water outlet 122, a chilled water inlet 131, and a chilled water outlet 132.
The hot water circuit circulation system 3 includes a hot water tank 31 and a first water pump 32. The hot water output 311 of the hot water circuit circulation system 3 is connected to the hot water inlet 111 of the adsorption refrigeration system 1, and the hot water input 312 is connected to the hot water outlet 112 of the adsorption refrigeration system 1. Wherein the hot water tank 31 plays a role of temperature buffering so that the fluid temperature fluctuation between the 3 water circuits is not too large. And, the first water pump 32 is used to maintain the flow of water inside the pipe.
The cooling water circuit circulation system 4 includes a cooling water tank 41, a second water pump 42, and a radiator 43. The first cooling water output 411 of the cooling water circuit circulation system 4 is connected to the cooling water inlet 121 of the adsorption refrigeration system 1, and the first cooling water input 412 is connected to the cooling water outlet 122 of the adsorption refrigeration system 1. Wherein the cooling water tank 41 plays a role of temperature buffering so that the fluid temperature fluctuation between the 3 water circuits is not too large. And, the second water pump 42 is used to maintain the flow of water inside the pipe. The radiator 43 is used to ensure that the cooling water flowing into the adsorption refrigeration system 1 has a cooling capacity.
The chilled water loop circulation system 5 includes a chilled water tank 51 and a third water pump 52. The first chilled water output 511 of the chilled water loop circulation system 5 is connected to the chilled water inlet 131 of the adsorption refrigeration system 1, and the first chilled water input 512 is connected to the chilled water outlet 132 of the adsorption refrigeration system 1. Wherein the chilled water tank 51 serves as a temperature buffer so that the fluid temperature fluctuations between the 3 water circuits are not too great. And, the third water pump 52 is used to maintain the flow of water inside the pipe.
In addition, there are 2 water circuits within the coating dry air treatment system 2, each including an inlet and an outlet. Specifically, the coating dry air treatment system 2 includes a cold source inlet 211, a cold source outlet 212, a heat source inlet 221, and a heat source outlet 222.
The second chilled water output 521 of the chilled water loop circulation system 5 is coupled to the cold source inlet 211 of the coating dry air processing system 2, and the second chilled water input 522 is coupled to the cold source outlet 212 of the coating dry air processing system 2.
The second output 421 of the cooling water circuit circulation system 4 is connected to the heat source inlet 221 of the coating dry air treatment system 2 and the second cooling water input 422 is connected to the heat source outlet 222 of the coating dry air treatment system 2.
As shown in fig. 2, the adsorption refrigeration system 1 includes a first adsorption chamber 11, a second adsorption chamber 12, a condensation chamber 13, an evaporation chamber 14, a first switching valve V1, a second switching valve V2, a third switching valve V3, a fourth switching valve V4, a fifth throttle valve V5, a sixth three-way valve V6, a seventh three-way valve V7, an eighth three-way valve V8, a ninth three-way valve V9, a thirteenth pass valve V10, an eleventh three-way valve V11, and a sixteenth switching valve V16.
Specifically, a first end of the first adsorption chamber 11 is connected to one end of the first switching valve V1, a second end of the first adsorption chamber 11 is connected to the sixteenth switching valve V16, a third end of the first adsorption chamber 11 is connected to one end of the third switching valve V3, a fourth end of the first adsorption chamber 11 is connected to the second valve port of the eighth three-way valve V8 and the second valve port of the ninth three-way valve V9, and a fifth end of the first adsorption chamber 11 is connected to the second valve port of the sixth three-way valve V6 and the third valve port of the seventh three-way valve.
The first end of the second adsorption chamber 12 is connected to one end of the second switching valve V2, the second end of the second adsorption chamber 12 is connected to the third port of the sixth three-way valve V6 and the second port of the seventh three-way valve V7, the third end of the second adsorption chamber 12 is connected to the third port of the eighth three-way valve V8 and the third port of the ninth three-way valve V9, the fourth end of the second adsorption chamber 12 is connected to one end of the fourth switching valve V4, and the fifth end of the second adsorption chamber 12 is connected to the second end of the first adsorption chamber 11.
The first end of the condensing chamber 13 is connected with the other end of the first switch valve V1, the second end of the condensing chamber 13 is connected with the cooling water inlet 121, the third end of the condensing chamber 13 is connected with the first valve port of the sixth three-way valve, the fourth end of the condensing chamber 13 is connected with the other end of the second switch valve, and the fifth end of the condensing chamber 13 is connected with one end of the fifth throttle valve V5.
The first end of the evaporation chamber 14 is connected to the chilled water inlet 131, the second end of the evaporation chamber 14 is connected to the other end of the third switching valve, the third end of the evaporation chamber 14 is connected to the other end of the fifth throttle valve V5, the fourth end of the evaporation chamber 14 is connected to the other end of the fourth switching valve V4, and the fifth end of the evaporation chamber 14 is connected to the chilled water outlet 132.
The first port of the seventh three-way valve V7 is connected to the second port of the thirteenth valve V10. The first port of the eighth three-way valve V8 is connected to the cooling water outlet 122. The first port of the ninth three-way valve V9 is connected to the first port of the thirteenth through valve V10. The third valve port of the thirteenth through valve V10 is connected to the hot water outlet 112 and the second valve port of the eleventh three-way valve. The first port of the eleventh three-way valve V11 is connected to the hot water inlet 111.
In addition, as shown in fig. 3, the coated dry air treatment system 2 includes a first coated desiccant heat exchanger 21, a second coated desiccant heat exchanger 22, a first axial flow fan 23, a second axial flow fan 24, a twelfth three-way valve V12, a thirteenth three-way valve V13, a fourteenth three-way valve V14, and a fifteenth three-way valve V15.
Specifically, the first end of the first coated desiccant heat exchanger 21 is connected to the second port of the twelfth three-way valve V12, and the second end of the first coated desiccant heat exchanger 21 is connected to the second port of the thirteenth three-way valve V13.
The first end of the second coated desiccant heat exchanger 22 is connected to the third valve port of the fourteenth three-way valve V14, and the second end of the second coated desiccant heat exchanger 22 is connected to the third valve port of the fifteenth three-way valve V15.
The first port of the twelfth three-way valve V12 is connected to the cold source inlet 211 and the first port of the fourteenth three-way valve V14, and the third port of the twelfth three-way valve V12 is connected to the second port of the fourteenth three-way valve V14 and the heat source inlet 221.
The first port of the thirteenth three-way valve V13 is connected to the cold source outlet 212 and the first port of the fifteenth three-way valve V15, and the third port of the thirteenth three-way valve V13 is connected to the second port of the fifteenth three-way valve V15 and the cold source outlet 212.
A control method of the adsorption type air treatment system for cooling and drying air using the above adsorption type air treatment system will be described in detail.
First, a control method of the adsorption refrigeration system 1 will be described in detail.
S10: the first adsorption chamber 11 is preheated and the second adsorption chamber 12 is precooled.
When the system is in the initial state, the first adsorption chamber 11 is in a low temperature and low pressure state, and the second adsorption chamber 12 is in a high temperature and high pressure state. Therefore, the first adsorption chamber 11 is preheated by the following steps S100 to S106 such that the pressure of the first adsorption chamber 11 is no longer lower than the pressure in the condenser 13, and the second adsorption chamber 12 is precooled such that the pressure of the second adsorption chamber 12 is no longer higher than the pressure of the evaporation chamber 14.
S100: the first switching valve V1, the second switching valve V2, the third switching valve V3, and the fourth switching valve V4 are closed.
S101: the hot water in the hot water circuit circulation system 3 enters the first valve port of the eleventh three-way valve V11 through the hot water inlet 111, flows out of the third valve port of the eleventh three-way valve V11, enters the first valve port of the seventh three-way valve, and flows out of the third valve port of the seventh three-way valve into the first adsorption chamber 11.
S102: the hot water introduced into the first adsorption chamber 11 exchanges heat with the first adsorption chamber 11, and increases the temperature and pressure of the first adsorption chamber 11.
S103: the hot water flowing out of the first adsorption chamber 11 passes through the second valve port and the first valve port of the ninth three-way valve V9, enters the first valve port of the thirteenth through valve V10, flows out of the third valve port of the thirteenth through valve, and finally flows into the hot water circuit circulation system 3 again.
S104: the cooling water in the cooling water loop circulation system 4 enters the condensing chamber 13 through the cooling water inlet 121, then the cooling water flowing out of the condensing chamber 13 enters the first valve port of the sixth three-way valve V6, and then flows out of the third valve port of the sixth three-way valve V6 into the second adsorption chamber 12.
S105: the cooling water introduced into the second adsorption chamber 12 exchanges heat with the second adsorption chamber 12, and reduces the temperature and pressure of the second adsorption chamber 12.
S106: the cooling water flowing out of the second adsorption chamber 12 flows out of the first port of the eighth three-way valve V8 through the third port of the eighth three-way valve V8, and finally flows back into the cooling water circuit circulation system 4.
S11: the desorption in the first adsorption chamber 11 is performed, and the adsorption in the second adsorption chamber 12 is performed.
In performing this step S11, the first adsorption chamber 11 and the second adsorption chamber 12 are operated in the desorption mode and the adsorption mode, respectively. The hot water flow path and the cooling water flow path are the same as those in step S10 described above.
S110: the second and third switching valves V2 and V3 are closed, and the first and fourth switching valves V1 and V4 are opened.
S111: hot water enters the first adsorption chamber 11, and desorbed refrigerant flows into the condensation chamber 13 through the first on-off valve V1.
S112: the refrigerant condensed in the condensation chamber 13 enters the evaporation chamber 14 through the fifth throttle valve V5 and is adsorbed by the second adsorption chamber 12.
In this step, the cooling water takes in the heat released by the condensation of the refrigerant in the condensation chamber 13 and the heat of adsorption released in the second adsorption chamber 12.
The chilled water in the chilled water loop circulation system 5 enters the chilled water inlet 131, enters the evaporation chamber 14, and flows out through the chilled water outlet 132, and finally flows into the chilled water loop circulation system 5. The chilled water flows in the evaporation chamber 14 and is cooled due to the evaporation of the refrigerant. Therefore, cold can be generated in this step, and this cold is brought out of the adsorption refrigeration system 1 by circulation of chilled water with the outside.
S12: the regeneration from the first adsorption chamber 11 to the second adsorption chamber 12 is performed.
Specifically, when step S11 reaches the threshold value, the first switching valve V1 and the fourth switching valve V4 are closed, and the sixteenth switching valve V16 is opened. The flow direction of the three heat exchange fluids remains unchanged. Since there is a pressure gradient between the first adsorption chamber 11 and the second adsorption chamber 12, the sixteenth switching valve V16 is opened to generate a mass recovery process from the first adsorption chamber 11 to the second adsorption chamber 12, which can increase the cyclic adsorption amount.
S13: a regeneration process from the first adsorption chamber 11 to the second adsorption chamber 12 is performed.
Specifically, after the above-mentioned regenerating process of step S12 continues for a period of time, the sixteenth switching valve V16 is closed. The cooling water continuously flows through the condensation chamber 13, the sixth three-way valve V6, the first adsorption chamber 11, the ninth three-way valve V9, the tenth three-way valve V10, the seventh three-way valve V7, the second adsorption chamber 12, and the eighth three-way valve V8. At this time, the heat of the first adsorption chamber 11 is converted to the second adsorption chamber 12. This step is called a series regenerative cycle, which is advantageous for reducing heat input. In this step, the hot water is bypassed without entering the ADRS.
In the cycle of step S14-step S17, the first adsorption chamber 11 and the second adsorption chamber 12 respectively take on the opposite roles in steps S10-S13, but the working principle is the same. Therefore, the description is omitted.
In summary, a complete adsorption refrigeration cycle mainly includes steps S10-S17, for a total of 8 steps. Specifically, two preheating steps, two refrigeration steps, two regenerating steps and two regenerating steps. The times of the preheating, refrigerating, regenerating and regenerating steps can be recorded as t 1, t2, t3 and t4 respectively so as to program automatic operation.
The control method of the coating dry air treatment system 2 will be described in detail.
S20: the first coating desiccant heat exchanger 21 is activated in a dehumidification mode to dehumidify the water vapor in the air a.
Specifically, the desiccant applied to the first coated desiccant heat exchanger 21 adsorbs water vapor in the air a and releases the heat of adsorption. Chilled water flowing from chilled water outlet 132 enters cold source inlet 211 and flows through, in turn, twelfth three-way valve V12, first coating desiccant heat exchanger 21 and thirteenth three-way valve V13, thereby taking away the heat of adsorption and the sensible heat of air A.
S21: simultaneously with step S20, the second coated desiccant heat exchanger 22 is activated to a regeneration mode, and the desiccant inside the second coated desiccant heat exchanger 22 is dried.
Specifically, the cooling water flowing out of the cooling water outlet 122 enters the heat source inlet 221 and flows through the second coated desiccant heat exchanger 22 to heat the desiccant coated on the second coated desiccant heat exchanger 22, so that the water vapor adsorbed by the desiccant is desorbed and high-temperature and high-humidity air is formed to be discharged from the second coated desiccant heat exchanger 22.
S22: starting the second coating desiccant heat exchanger 22 in a dehumidification mode to dehumidify the water vapor in the air a; the first coated desiccant heat exchanger 21 is activated in a regeneration mode to dry the desiccant inside the first coated desiccant heat exchanger 21.
In summary, according to the embodiment of the invention, by integrating the adsorption refrigeration system and the coating dry air treatment system, sensible heat and latent heat of air treatment are decoupled, and the adverse phenomenon that the cooling water temperature of the traditional waste heat recovery system is required to be lower than the target dew point temperature of air for dehumidification is avoided, so that the evaporation temperature of the evaporation chamber of the adsorption refrigeration system can be increased, the refrigeration efficiency of the adsorption refrigeration system is improved, and the requirement of a customer for dehumidifying air is met.
It should be noted that, the embodiments of the present invention may be combined to form new embodiments, which are all within the scope of the present invention.
The term "forming" used herein means that the material can be obtained by one of various processes, and is not limited to the processes shown in the examples.
It should be understood that the terms "thickness," "depth," "upper," "lower," "horizontal," and the like indicate an orientation or positional relationship based on that shown in the drawings, and are merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
The present invention has been described in detail. Any obvious modifications to the present invention, without departing from the spirit thereof, would constitute an infringement of the patent rights of the invention and would take on corresponding legal liabilities.
Claims (10)
1. An adsorption type air treatment system, characterized in that: comprises an adsorption refrigeration system, a coating dry air treatment system, a hot water loop circulation system, a cooling water loop circulation system and a chilled water loop circulation system,
the hot water loop circulation system, the cooling water loop circulation system and the chilled water loop circulation system are respectively connected with the adsorption refrigeration system and used for providing hot water, cooling water and chilled water for the adsorption refrigeration system;
the cooling water loop circulation system and the chilled water loop circulation system are respectively connected with the coating dry air treatment system and used for providing a cold source and a heat source for the coating dry air treatment system.
2. The adsorption air treatment system of claim 1, wherein: the adsorption refrigeration system comprises a hot water inlet, a hot water outlet, a cooling water inlet, a cooling water outlet, a chilled water inlet and a chilled water outlet,
the hot water output end of the hot water loop circulation system is connected with the hot water inlet of the adsorption refrigeration system, and the hot water input end is connected with the hot water outlet inlet of the adsorption refrigeration system;
the first cooling water output end of the cooling water loop circulation system is connected with the cooling water inlet of the adsorption refrigeration system, and the first cooling water input end is connected with the cooling water outlet of the adsorption refrigeration system;
the first chilled water output end of the chilled water loop circulation system is connected with the chilled water inlet of the adsorption refrigeration system, and the first chilled water input end is connected with the chilled water outlet of the adsorption refrigeration system.
3. The adsorption air treatment system of claim 1, wherein: the coating dry air treatment system comprises a cold source inlet, a cold source outlet, a heat source inlet and a heat source outlet,
the second chilled water output end of the chilled water loop circulation system is connected with the cold source inlet of the coating dry air treatment system, and the second chilled water input end is connected with the cold source outlet of the coating dry air treatment system;
and a second output end of the cooling water loop circulation system is connected with a heat source inlet of the coating dry air treatment system, and a second cooling water input end of the cooling water loop circulation system is connected with a heat source outlet of the coating dry air treatment system.
4. The adsorption air treatment system of claim 1, wherein: the adsorption refrigeration system comprises a first adsorption chamber, a first switch valve, a third switch valve, a sixth three-way valve, a seventh three-way valve, an eighth three-way valve and a ninth three-way valve,
the first end of the first adsorption chamber is connected with one end of the first switch valve, the second end of the first adsorption chamber is connected with the sixteenth switch valve, the third end of the first adsorption chamber is connected with one end of the third switch valve, the fourth end of the first adsorption chamber is connected with the second valve port of the eighth three-way valve and the second valve port of the ninth three-way valve, and the fifth end of the first adsorption chamber is connected with the second valve port of the sixth three-way valve and the third valve port of the seventh three-way valve.
5. The adsorption air treatment system of claim 4, wherein: the adsorption refrigeration system also comprises a second adsorption chamber, a second switch valve and a fourth switch valve,
the first end of the second adsorption chamber is connected with one end of the second switch valve, the second end of the second adsorption chamber is connected with the third valve port of the sixth three-way valve and the second valve port of the seventh three-way valve, the third end of the second adsorption chamber is connected with the third valve port of the eighth three-way valve and the third valve port of the ninth three-way valve, the fourth end of the second adsorption chamber is connected with one end of the fourth switch valve, and the fifth end of the second adsorption chamber is connected with the second end of the first adsorption chamber.
6. The adsorption air treatment system of claim 5, wherein: the adsorption refrigeration system further comprises a condensing chamber and an evaporating chamber,
the first end of the condensing chamber is connected with the other end of the first switch valve, the second end of the condensing chamber is connected with the cooling water inlet, the third end of the condensing chamber is connected with the first valve port of the sixth three-way valve, the fourth end of the condensing chamber is connected with the other end of the second switch valve, and the fifth end of the condensing chamber is connected with one end of the fifth throttle valve;
the first end of the evaporating chamber is connected with the chilled water inlet, the second end of the evaporating chamber is connected with the other end of the third switch valve, the third end of the evaporating chamber is connected with the other end of the fifth throttle valve, the fourth end of the evaporating chamber is connected with the other end of the fourth switch valve, and the fifth end of the evaporating chamber is connected with the chilled water outlet.
7. The adsorption air treatment system of claim 1, wherein: the coating dry air treatment system comprises a first coating drier heat exchanger, a second coating drier heat exchanger, a first axial flow fan, a second axial flow fan, a twelfth three-way valve, a thirteenth three-way valve, a fourteenth three-way valve and a fifteenth three-way valve,
the first end of the first coating desiccant heat exchanger is connected with the second valve port of the twelfth three-way valve, and the second end of the first coating desiccant heat exchanger is connected with the second valve port of the thirteenth three-way valve;
the first end of the second coating desiccant heat exchanger is connected with the third valve opening of the fourteenth three-way valve, and the second end of the second coating desiccant heat exchanger is connected with the third valve opening of the fifteenth three-way valve.
8. A control method of an adsorption type air treatment system for controlling an adsorption type air treatment system according to any one of claims 1 to 7, characterized by: comprising a control method of an adsorption refrigeration system,
s10: preheating the first adsorption chamber and precooling the second adsorption chamber;
s11: desorbing the first adsorption chamber and adsorbing the second adsorption chamber;
s12: performing a regeneration from the first adsorption chamber to the second adsorption chamber;
s13: performing a regenerative process from the first adsorption chamber to the second adsorption chamber;
in the cycle of step S14 to step S17, the first adsorption chamber and the second adsorption chamber respectively take the actions opposite to those in steps S10 to S13, but the operation principle is the same.
9. The method of controlling an adsorption air treatment system according to claim 8, wherein:
s100: closing the first switch valve, the second switch valve, the third switch valve and the fourth switch valve;
s101: hot water in the hot water loop circulation system enters the first valve port of the eleventh three-way valve through the hot water inlet, flows out of the third valve port of the eleventh three-way valve, enters the first valve port of the seventh three-way valve, and flows out of the third valve port of the seventh three-way valve into the first adsorption chamber;
s102: the hot water entering the first adsorption chamber exchanges heat with the first adsorption chamber, so that the temperature and the pressure of the first adsorption chamber are increased;
s103: the hot water flowing out of the first adsorption chamber passes through the second valve port and the first valve port of the ninth three-way valve, enters the first valve port of the thirteenth through valve, flows out of the third valve port of the thirteenth through valve, and finally flows into the hot water loop circulation system again;
s104: cooling water in the cooling water loop circulation system enters the condensing chamber through the cooling water inlet, cooling water flowing out of the condensing chamber enters the first valve port of the sixth three-way valve, and flows out of the third valve port of the sixth three-way valve into the second adsorption chamber;
s105: the cooling water entering the second adsorption chamber exchanges heat with the second adsorption chamber, and the temperature and the pressure of the second adsorption chamber are reduced;
s106: the cooling water flowing out of the second adsorption chamber flows out of the first valve port of the eighth three-way valve through the third valve port of the eighth three-way valve, and finally flows into the cooling water loop circulation system again.
10. The adsorption air treatment system of claim 8, wherein: also included are methods of controlling a coating dry air treatment system,
s20: starting the first coating desiccant heat exchanger to be in a dehumidification mode, and dehumidifying water vapor in the air;
s21: simultaneously with step S20, the second coated desiccant heat exchanger is activated to a regeneration mode, and the desiccant inside the second coated desiccant heat exchanger is dried.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311150737.7A CN117167845A (en) | 2023-09-06 | 2023-09-06 | Adsorption type air treatment system and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311150737.7A CN117167845A (en) | 2023-09-06 | 2023-09-06 | Adsorption type air treatment system and control method thereof |
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