CN110567074B - Radiation cooling system and cooling method - Google Patents
Radiation cooling system and cooling method Download PDFInfo
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- CN110567074B CN110567074B CN201910886656.0A CN201910886656A CN110567074B CN 110567074 B CN110567074 B CN 110567074B CN 201910886656 A CN201910886656 A CN 201910886656A CN 110567074 B CN110567074 B CN 110567074B
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- 238000001816 cooling Methods 0.000 title claims abstract description 118
- 230000005855 radiation Effects 0.000 title claims abstract description 113
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 394
- 238000004321 preservation Methods 0.000 claims abstract description 71
- 238000005057 refrigeration Methods 0.000 claims abstract description 33
- 238000009833 condensation Methods 0.000 claims abstract description 15
- 230000005494 condensation Effects 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims description 9
- 239000003507 refrigerant Substances 0.000 claims description 8
- 230000001447 compensatory effect Effects 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 3
- 230000001954 sterilising effect Effects 0.000 claims description 3
- 238000004659 sterilization and disinfection Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 238000004378 air conditioning Methods 0.000 abstract description 9
- 239000010865 sewage Substances 0.000 description 5
- 241000894006 Bacteria Species 0.000 description 3
- 241000195493 Cryptophyta Species 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000008213 purified water Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003238 somatosensory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
- F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0089—Systems using radiation from walls or panels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
- F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
- F24F7/08—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit with separate ducts for supplied and exhausted air with provisions for reversal of the input and output systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F2013/228—Treatment of condensate, e.g. sterilising
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/10—Pressure
- F24F2140/12—Heat-exchange fluid pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Human Computer Interaction (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a radiation cooling system and a cooling method, wherein the radiation cooling system comprises an air conditioner condensation water source, a heat preservation water tank, a compensation refrigeration unit and a radiation cooling terminal; the water supply port of the heat preservation water tank is connected with the water inlet of the radiation cooling terminal through a water supply pipeline; the water outlet of the radiation cooling terminal is connected with one end of a water return pipeline, and the other end of the water return pipeline is communicated with a first node on the water supply pipeline; a circulating pump and a compensation refrigeration unit are arranged between the first node and the radiation cooling terminal on the water supply pipeline; the compensation refrigeration unit is used for refrigerating the condensed water in the water supply pipeline when the temperature of the condensed water in the water supply pipeline cannot meet the refrigeration requirement of the radiation cooling terminal, and the capacity of a conventional air conditioning system can be effectively reduced; cold energy contained in the condensed water can be utilized, so that energy sources are saved, and the energy utilization efficiency is improved.
Description
Technical Field
The invention relates to the field of energy conservation and radiation cooling of air conditioners, in particular to a radiation cooling system and a cooling method.
Background
The office building is provided with air conditioning systems for ensuring the comfort of working environment in summer, the tail ends of the office building are provided with fan coils, multi-split indoor units and the like, condensed water is generated in the working process in summer, the condensed water is discharged in a concentrated mode or to the outside through various ways, the temperature of the condensed water is 15-22 ℃ lower than the room temperature, and part of cold energy contained in the condensed water is wasted; and according to experience, 0.4-0.8 kg of condensed water is generated in every 1kW of cooling capacity for 1 hour, so that under the environment of the current energy-saving requirement, if the considerable cooling capacity can be recycled, a lot of energy sources can be saved.
The radiation cooling system adopts cold water with medium and high temperature, which is generally 2 ℃ higher than the dew point temperature of room air, and the temperature difference of the supplied and returned water is not more than 5 ℃ and not less than 2 ℃ because of the particularity. At a standard atmospheric pressure, the room temperature was 26 ℃ and the air dew point temperature was 17.5 ℃ at 60% humidity. And the temperature of the condensed water can be kept at 20 ℃ through control and adjustment. If the condensed water and the radiation cooling are combined, the power consumption of the air conditioner can be effectively solved, and the energy utilization efficiency is improved.
Disclosure of Invention
The invention aims to provide a radiation cooling system and a cooling method, thereby effectively reducing energy waste, improving energy utilization efficiency, and realizing energy conservation and economic benefit by using the air conditioner condensate water after being recycled.
In order to solve the above technical problems, the present invention provides a radiation cooling system, which includes: an air conditioner condensation water source, a heat preservation water tank, a compensation refrigeration unit and a radiation cooling terminal;
the heat preservation water tank is communicated with the air conditioner condensation water generation source through a condensation water pipeline and is used for receiving and storing condensate water generated by the air conditioner condensation water generation source;
the water supply port of the heat preservation water tank is connected with the water inlet of the radiation cooling terminal through a water supply pipeline; the water outlet of the radiation cooling terminal is connected with one end of a water return pipeline, and the other end of the water return pipeline is communicated with a first node (preferably a tee joint) on the water supply pipeline;
a circulating pump and a compensation refrigeration unit are arranged between the first node and the radiation cooling terminal on the water supply pipeline; the compensation refrigeration unit is used for refrigerating condensed water in the water supply pipeline when the temperature of the condensed water of the air conditioner in the water supply pipeline cannot meet the refrigeration requirement of the radiation cooling terminal;
a sixth control valve is arranged between the first node and the heat preservation water tank on the water supply pipeline; and a second control valve is arranged on the water return pipeline.
In addition, the water supply pipeline is provided with a secondary filter close to the water supply port.
Further, an ultraviolet sterilizer for sterilization is arranged in the heat preservation water tank. Specifically, the ultraviolet sterilizer is arranged at the top part in the heat preservation water tank.
Further, a first filter, a dirt remover and/or a comprehensive electronic water treatment instrument are arranged on the condensed water pipeline.
Wherein the first filter is preferably a Y-shaped filter.
The condensed water of air conditioner is mostly an open system, dust is easy to mix in, bacteria, algae and the like are bred, so that a filter, a pollutant remover or a comprehensive electronic water treatment instrument can be arranged on the condensed water pipe before entering the heat preservation water tank. To avoid secondary pollution, the end of the condensate pipe is inserted downwards below the condensate level of the heat preservation water tank and within a set distance (for example, 100-300 mm) from the bottom of the heat preservation water tank.
Further, the air conditioner condensation water source is air conditioning equipment such as a fan coil, a multi-split indoor unit, a combined air conditioner and the like. The temperature of a refrigerating component on the air conditioning equipment is lower than the dew point temperature of indoor air to separate out condensed water, and the condensed water is concentrated and collected into a heat preservation water tank through a condensed water pipe.
Wherein preferably, the outside of the condensed water pipeline is wrapped with an insulating layer.
Further, the compensation refrigeration unit is a first evaporator.
The first evaporator is in contact with the water supply pipeline, or the water supply pipeline passes through the refrigerating space of the first evaporator, and the first evaporator is used as a refrigerating unit and forms a heat exchange structure with the water supply pipeline.
The first evaporator is connected with the air conditioner direct expansion outdoor unit through a first refrigerant pipe. The first refrigerant pipe is preferably provided with an evaporator control valve for controlling the first evaporator to be turned on or off.
Further, a water outlet is formed in the bottom of the heat preservation water tank and communicated with a water drainage pipeline, and a first control valve is arranged on the water drainage pipeline.
When the temperature of the condensed water in the heat preservation water tank is higher and the actual refrigerating value is not available, the first control valve can be opened, and the water in the heat preservation water tank is discharged (for example, discharged to a drainage ditch, a pool and the like) through a drainage pipeline.
In addition, the upper part of the side wall of the heat preservation water tank is provided with an overflow port (100-200 mm away from the edge of the water tank), and the overflow port is communicated with a drainage pipeline through a water overflow pipeline.
Further, the radiation water supply device also comprises a radiation water drain pipe which is communicated with a water outlet or a water return pipeline of the radiation cooling terminal and is used for discharging water flowing out of the radiation cooling terminal (discharging to a drainage ditch or a pool and the like); the radiation drain pipe is provided with a fifth control valve.
Further, a third control valve, a circulating pump and a check valve are arranged between the first node on the water supply pipe and the radiation cooling terminal.
Further, the device also comprises a central controller and a temperature sensor; the central controller is respectively connected with the first control valve, the second control valve, the third control valve, the fifth control valve, the sixth control valve and the temperature sensor;
the temperature sensor includes: the device comprises a first sensor for sensing the temperature of condensed water in the heat preservation water tank, a second sensor for sensing the temperature of condensed water in the water supply pipeline, and a third sensor for sensing the room temperature of the radiation cooling terminal.
Further, the radiation cooling terminal is a radiation plate or a capillary tube and other heat dissipation devices.
Further, the system also comprises a fresh air system, wherein the fresh air system comprises a fresh air pipeline and a return air pipeline;
the fresh air pipeline is used for inputting fresh air into the room; the return air pipeline is used for exhausting indoor air outdoors;
the fresh air pipeline and the return air pipeline respectively comprise a heat exchange section (heat recovery functional section), and the fresh air pipeline and the return air pipeline exchange and recover heat in the heat exchange section; the second evaporator is connected with the air conditioner direct expansion outdoor unit through a second refrigerant pipe.
The second evaporator is used as a condensing water source of the air conditioner, and the generated condensed water can flow into the heat preservation water tank through a condensing water pipeline. Of course, the water can be directly discharged into the drainage ditch. In addition, the fresh air pipeline and the return air pipeline are respectively provided with a fan for driving the air to flow.
By adopting the technical scheme, the invention has the following beneficial effects:
the radiation cooling system provided by the invention can effectively reduce the capacity of a conventional air conditioning system; cold energy contained in the condensed water can be utilized, so that energy sources are saved, and the energy utilization efficiency is improved; in addition, the system adopts an automatic control technology, so that the labor cost can be effectively reduced, and meanwhile, the accuracy and stability of the system operation are improved. In addition, the local environmental problems caused by low-temperature condensed water can be reduced.
In addition, the invention also discloses a radiation cooling method, which comprises the following steps:
s10, collecting air conditioner condensed water generated by an air conditioner condensed water generation source by utilizing a heat preservation water tank;
s20, starting the fresh air system, enabling the air conditioner direct expansion outdoor unit and the second evaporator to work, and inputting fresh cold air into a room through the fresh air pipeline;
s30, monitoring water temperature t of condensed water in heat preservation water tank at moment 1 The water temperature at the water inlet of the radiation cooling terminal is set to be t 0 ；
When (t) 0 +1)≤t 1 ＜(t 0 +10), the sixth control valve is opened, the condensed water in the heat-preserving water tank is input into the radiation cooling terminal through the water supply pipeline by using the circulating pump, and the condensed water in the water supply pipeline is subjected to compensatory refrigeration by using the compensatory refrigeration unit, so that the water supply temperature t at the water inlet of the radiation cooling terminal 2 Equal to the set water temperature t 0 The method comprises the steps of carrying out a first treatment on the surface of the At the same time, the fifth control valve is opened to discharge the water flowing out from the radiation cooling terminal to the radiation cooling system (such as to drain or to pollute the waterWater treatment tanks, etc.);
when (t) 0 -2)≤t 1 ＜(t 0 +1), closing the compensation refrigeration unit, opening a sixth control valve, and directly inputting condensed water in the heat preservation water tank into the radiation cooling terminal through a water supply pipeline by using a circulating pump; opening a fifth control valve to drain water flowing out of the radiation cooling terminal out of the radiation cooling system (such as into a drainage ditch or a sewage treatment tank, etc.);
when t 1 ＜(t 0 -2) switching off the compensation refrigeration unit; a sixth control valve is opened, and condensed water in the heat preservation water tank is directly input into the radiation cooling terminal through a water supply pipeline by using a circulating pump; opening a second control valve on the return water pipeline, inputting return water flowing out of the radiation cooling terminal into a water supply pipeline, and mixing the return water with new condensate water flowing out of the self-heat-preservation water tank; the water discharge amount of the radiation cooling system is controlled by a fifth control valve, the water return amount which is returned to the water supply pipeline is controlled by a second control valve, and the new condensate water amount which flows into the water supply pipeline in the self-heat-preservation water tank is controlled by a sixth control valve, so that the proportion of the water return amount to the new condensate water is adjusted, and the water supply temperature t at the water inlet of the radiation cooling terminal is caused 2 Equal to the set water temperature t 0 The method comprises the steps of carrying out a first treatment on the surface of the If the fifth control valve is closed, the second control valve is opened to the maximum degree (namely when the second control valve is fully opened), and the water supply temperature t at the water inlet of the radiation cooling terminal 2 Still lower than the set water temperature t 0 Temporarily closing a sixth control valve, and circulating the backwater in a closed loop system formed by the water supply pipeline, the radiation cooling terminal and the backwater pipeline by using a circulating pump until the water supply temperature t at the water inlet of the radiation cooling terminal 2 Not lower than the set water temperature t 0 ；
When (t) 0 +10)≤t 1 And when the sixth control valve is closed, the condensed water in the heat preservation water tank is discharged out of the radiation cooling system (such as a drainage ditch or a sewage treatment tank).
Further, the set water temperature t 0 Is 16-20 ℃.
Further, a secondary filter is arranged on the water supply pipeline close to the water supply port of the heat preservation water tank; the two sides of the secondary filter are respectively provided with a pressure sensor for detecting the water pressure in the water supply pipeline, the two pressure sensors are respectively connected with the central controller, and when the pressure difference of the two pressure sensors exceeds a set range, the central controller gives an alarm to prompt the replacement or cleaning of the secondary filter.
The radiation cooling method disclosed by the invention combines the fresh air system with radiation cooling, effectively recovers and uses the cold energy of the condensed water of the air conditioner, improves the energy utilization efficiency, can control the indoor temperature and humidity by utilizing the radiation cooling terminal, and improves the indoor thermal comfort.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings which are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are some embodiments of the invention and that other drawings may be obtained from these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a radiation cooling system according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. 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.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The invention is further illustrated with reference to specific embodiments.
Example 1
As shown in fig. 1, a radiation cooling system provided in this embodiment 1 includes: an air conditioner condensation water generation source 1, a heat preservation water tank 5, a compensation refrigeration unit 8 and a radiation cooling terminal 10;
the heat preservation water tank 5 is communicated with the air conditioner condensation water generation source 1 through a condensate water pipeline G1 and is used for receiving and storing condensate water generated by the air conditioner condensation water generation source 1;
the water supply port of the heat preservation water tank 5 is connected with the water inlet of the radiation cooling terminal 10 through a water supply pipeline G4; the water outlet of the radiation cooling terminal 10 is connected with one end of a water return pipeline G9, and the other end of the water return pipeline G9 is communicated with a first joint J1 (preferably a tee joint) on a water supply pipeline G4;
a circulating pump 9 and a compensation refrigeration unit 8 are arranged between the first node and the radiation cooling terminal 10 on the water supply pipeline G4; the compensation refrigeration unit 8 is used for refrigerating the condensed water in the water supply pipeline G4 when the temperature of the condensed water in the water supply pipeline G4 cannot meet the refrigerating requirement of the radiation cooling terminal 10.
A sixth control valve F6 is arranged between the first node and the heat preservation water tank 5 on the water supply pipeline G4; the water return pipeline G9 is provided with a second control valve F2.
In addition, a secondary filter 7 is disposed on the water supply line G4 near the water supply port.
An ultraviolet sterilizer 6 for sterilization is arranged in the heat preservation water tank 5. Specifically, the ultraviolet sterilizer 6 is disposed at the top inside the insulated water tank 5.
The condensed water is mostly an open system, dust is easily mixed in, bacteria, algae and the like are bred, and thus the first filter 2, the dirt remover 3 and the integrated electronic water treatment instrument 4 are arranged on the condensed water pipeline G1. Wherein the first filter 2 is preferably a Y-shaped filter. The condensed water is mostly an open system, dust is easy to mix in, bacteria, algae and the like are bred, so that a filter, a pollutant remover or a comprehensive electronic water treatment instrument can be arranged on the condensed water pipe before entering the heat preservation water tank 5. In order to avoid secondary pollution, the tail end of the condensate pipe is downwards inserted below the condensate water level of the heat preservation water tank 5 and is 150-200mm away from the bottom of the heat preservation water tank 5.
The air conditioner condensation water generation source 1 is air conditioning equipment such as a fan coil, a multi-split indoor unit, a combined air conditioner and the like. The temperature of the refrigerating component on the air conditioning equipment is lower than the dew point temperature of the indoor air to separate out condensed water, and the condensed water is concentrated and collected into the heat preservation water tank 5 through a condensed water pipeline.
Wherein preferably, the condensed water pipeline G1 is externally wrapped with an insulation layer. In order to avoid secondary pollution, the drainage tail end (namely a water outlet) of the condensed water pipeline G1 with heat preservation is inserted below the condensed water surface in the heat preservation water tank, and is 150mm away from the bottom of the heat preservation water tank 5.
In this embodiment, the compensation refrigeration unit 8 is a first evaporator. The first evaporator is in contact with the water supply line G4, or the water supply line G4 passes through the refrigerating space of the first evaporator, and the first evaporator serves as a refrigerating unit and forms a heat exchange structure with the water supply line G4. The first evaporator is connected to the air conditioner direct expansion outdoor unit 11 through a first refrigerant pipe G5. The first refrigerant pipe is preferably provided with an evaporator control valve, and the evaporator control valve is connected with the central controller through a circuit and used for controlling the opening or closing of the first evaporator.
The bottom of the heat preservation water tank 5 is provided with a water outlet which is communicated with a water drainage pipeline G3, and the water drainage pipeline G3 is provided with a first control valve F1. When the condensed water in the heat preservation water tank 5 has high temperature and has no actual refrigerating value, the first control valve F1 can be opened, and the water in the heat preservation water tank 5 is discharged, for example, to a drain, a pool and the like through a drain pipeline.
In addition, the upper part of the side wall of the heat preservation water tank 5 is provided with an overflow port, the overflow port is 100-300mm away from the upper port edge of the heat preservation water tank, and the overflow port is communicated with one side of the lower end of the first control valve of the drainage pipeline G3 through the overflow pipeline G2, so that overflowed water can be drained out of the system through the drainage pipeline.
The embodiment also comprises a radiation drain pipe G8, wherein the radiation drain pipe G8 is communicated with a water outlet or a water return pipeline G9 of the radiation cooling terminal 10 and is used for discharging water flowing out of the radiation cooling terminal 10 to a radiation cooling system, such as a drainage ditch or a water pool; the radiation drain pipe G8 is provided with a fifth control valve F5. A third control valve F3, a circulating pump 9 and a check valve F4 are arranged between the first node on the water supply pipeline G4 and the radiation cooling terminal 10.
The present embodiment also includes a central controller 15 and a temperature sensor; the central controller 15 is respectively connected with the first control valve F1, the second control valve F2, the third control valve F3, the fifth control valve F5, the sixth control valve F6 and the temperature sensor;
wherein, temperature sensor includes: a first sensor T1 for sensing the temperature of condensed water in the heat preservation water tank 5, a second sensor T2 for sensing the temperature of condensed water in the water supply pipeline G4, and a third sensor T3 for sensing the room temperature at which the radiation cold supply terminal 10 is positioned. The radiation cooling terminal 10 is a radiation plate or a capillary tube or other heat dissipation device.
The embodiment also comprises a fresh air system 12, wherein the fresh air system 12 comprises a fresh air pipeline G11 and a return air pipeline G12;
the fresh air pipeline G11 is used for inputting fresh air into the room; the return air pipeline G12 is used for discharging indoor old air outdoors;
the fresh air pipeline G11 and the return air pipeline G12 respectively comprise a heat exchange section 14 (a heat recovery functional section), and the fresh air pipeline G11 and the return air pipeline G12 exchange and recover heat in the heat exchange section; the fresh air system comprises a second evaporator 13 for refrigerating air in a fresh air pipeline G11, and the second evaporator 13 is connected with the air conditioner direct expansion outdoor unit through a second refrigerant pipe G6.
The second evaporator 13 serves as an air-conditioning condensate water source 1, and the condensate water generated by the second evaporator is directly discharged into the drain through the drain pipe G7, and naturally flows into the heat preservation water tank 5 through the condensate water pipe G1. Fresh air pipeline G11 and return air pipeline G12 are provided with fresh air unit that is used for driving gas flow respectively.
In fig. 1, lines X1-13 are signal lines or control lines. The line X1 is a signal line for connecting the first temperature sensor and the central controller; the line X2 is a differential pressure sensing signal line connected with the secondary filter and the central controller; the line X3-central controller is connected with a signal control line of the second control valve; the line X4-central controller is connected with a signal control line of the first control valve; the line X5-central controller is connected with a signal control line of the third control valve; the line X6-central controller is connected with a control line of the direct expansion air conditioner; the line X7-central controller is connected with a control line of the fresh air handling unit; the line X8-central controller is connected with a control line of the circulating pump 9; the line X9-central controller is connected with a signal line of the second temperature sensor; the line X10-central controller is connected with a signal line of the third temperature sensor; the line X11-central controller is connected with a signal line of a humidity sensor H in the room; the line X12-central controller is connected with a signal control line of the fifth control valve; the line X13-central controller is connected with a signal control line of the sixth control valve.
The radiation cooling system provided by the invention can effectively reduce the capacity of a conventional air conditioning system; cold energy contained in the condensed water can be utilized, so that energy sources are saved, and the energy utilization efficiency is improved; in addition, the system adopts an automatic control technology, so that the labor cost can be effectively reduced, and meanwhile, the accuracy and stability of the system operation are improved. In addition, the local environmental problems caused by low-temperature condensed water can be reduced.
Example 2
Referring to fig. 1, this embodiment 2 discloses a radiation cooling method.
Before refrigeration starts, half-tank purified water is injected into the heat preservation water tank 5, the ultraviolet sterilizer 6 is opened, the sixth control valve F6, the second control valve F2, the third control valve F3 and the circulating pump 9 are opened through the central controller 15, the fifth control valve F5 is closed, the water supply pipeline G4 with heat preservation, the radiation refrigeration terminal 10 and the water return pipeline G9 with heat preservation are filled with water, and then all the control valves and the circulating pump are closed.
After the start of the refrigerating season, the first control valve F1 is opened, purified water in the heat-preservation water tank 5 is discharged out of the system through the water discharge pipeline G3 until the water level in the heat-preservation water tank is 2cm higher than the joint (water supply port) of the water supply pipeline G4, and then the first control valve F1 is closed. Then the air conditioner condensation water generation source 1 starts to work, generates condensed water, and enters the heat preservation water tank 5 after being processed by the comprehensive electronic water treatment instrument through the condensed water pipeline G1 with heat preservation and the Y-shaped filter and the dirt remover.
The method comprises the following steps of:
s10, collecting condensed water generated by an air conditioner condensed water generation source 1 by using a heat preservation water tank 5;
s20, starting the fresh air system 12, enabling the air conditioner direct expansion outdoor unit and the second evaporator 13 to work, and inputting fresh cold air into a room through the fresh air pipeline G11;
s30, monitoring water temperature t of condensed water in heat preservation water tank 5 at moment 1 The set water temperature at the water inlet of the radiation cooling terminal 10 is t 0 ；
When (t) 0 +1)≤t 1 ＜(t 0 +10), the sixth control valve F6 is opened, the condensed water in the heat preservation water tank 5 is input into the radiation cooling terminal 10 through the water supply pipeline G4 by the circulating pump 9, and the condensed water in the water supply pipeline G4 is subjected to compensatory refrigeration by the compensatory refrigeration unit 8, so that the water supply temperature t at the water inlet of the radiation cooling terminal 10 2 Equal to the set water temperature t 0 The method comprises the steps of carrying out a first treatment on the surface of the At the same time, the fifth control valve F5 is opened to discharge the water flowing out from the radiation cooling terminal 10 to the radiation cooling system (for example, to drain into a drain or sewage treatment tank, etc.);
when (t) 0 -2)≤t 1 ＜(t 0 +1), closing the compensation refrigeration unit 8, opening the sixth control valve F6, and directly inputting condensed water in the heat preservation water tank 5 into the radiation cooling terminal 10 through the water supply pipeline G4 by using the circulating pump 9; opening a fifth control valve F5 to drain water flowing out through the radiant cooling terminal 10 out of the radiant cooling system (e.g., into a drain or sewage treatment tank, etc.);
when t 1 ＜(t 0 -2) switching off the compensation refrigeration unit 8; opening a sixth control valve F6, and directly inputting condensed water in the heat preservation water tank 5 into the radiation cooling terminal 10 through the water supply pipeline G4 by using the circulating pump 9; opening a second control valve F2 on the water return pipeline G9, inputting the return water flowing out from the radiation cooling terminal 10 into the water supply pipeline G4, and mixing the return water with the new condensate water flowing out from the self-heat-preservation water tank 5; the water discharge amount of the radiation cooling system is controlled by a fifth control valve F5, the water return amount which is returned to the water supply pipeline G4 is controlled by a second control valve F2, and the new condensate amount which flows into the water supply pipeline G4 in the self-insulation water tank 5 is controlled by a sixth control valve F6, so that the ratio of the water return amount to the new condensate water is adjusted, and the water supply temperature t at the water inlet of the radiation cooling terminal 10 is caused 2 Equal to the set water temperature t 0 The method comprises the steps of carrying out a first treatment on the surface of the If the fifth control valve F5 is closed, the second control valve F2 is opened to the maximum extent (i.e., at full open), and the temperature t of the water supply at the water inlet of the radiant cooling terminal 10 2 Still lower than the set water temperature t 0 The sixth control valve F6 is temporarily closed, and the return water is circulated in a closed loop system consisting of the water supply pipeline G4, the radiation cooling terminal 10 and the return water pipeline G9 by the circulating pump 9 until the water supply temperature t at the water inlet of the radiation cooling terminal 10 2 Not lower than the set water temperature t 0 ；
When (t) 0 +10)≤t 1 At this time, the sixth control valve F6 is closed, and the condensed water in the heat-retaining water tank 5 is discharged out of the radiation cooling system (for example, into a drain or a sewage treatment tank).
Wherein the set water temperature t 0 Is 16-20 ℃. A secondary filter is arranged on the water supply pipeline G4 close to the water supply port of the heat preservation water tank 5; two sides of the secondary filter are respectively provided withA pressure sensor for detecting the water pressure in the water supply line G4 is provided, and the two pressure sensors are respectively connected with the central controller 15, and when the pressure difference of the two pressure sensors exceeds a set range, the central controller 15 alarms to prompt replacement or cleaning of the secondary filter.
According to the radiation cooling method disclosed by the invention, the fresh air system is combined with radiation cooling, so that the indoor humidity can be controlled by utilizing the radiation cooling terminal while the cold quantity of condensed water is effectively recovered and used and the energy utilization efficiency is improved, and meanwhile, the indoor somatosensory comfort level is improved.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (7)
1. A radiant cooling method employing a radiant cooling system, the radiant cooling system comprising: an air conditioner condensation water source, a heat preservation water tank, a compensation refrigeration unit and a radiation cooling terminal;
the heat preservation water tank is communicated with the air conditioner condensation water generation source through a condensation water pipeline and is used for receiving and storing condensate water generated by the air conditioner condensation water generation source;
the water supply port of the heat preservation water tank is connected with the water inlet of the radiation cooling terminal through a water supply pipeline; the water outlet of the radiation cooling terminal is connected with one end of a water return pipeline, and the other end of the water return pipeline is communicated with a first node on the water supply pipeline;
a circulating pump and a compensation refrigeration unit are arranged between the first node and the radiation cooling terminal on the water supply pipeline; the compensation refrigeration unit is used for refrigerating the condensed water in the water supply pipeline when the temperature of the condensed water in the water supply pipeline cannot meet the refrigeration requirement of the radiation refrigeration terminal;
a sixth control valve is arranged between the first node and the heat preservation water tank on the water supply pipeline; the water return pipeline is provided with a second control valve;
the system also comprises a fresh air system, wherein the fresh air system comprises a fresh air pipeline and a return air pipeline;
the fresh air pipeline is used for inputting fresh air into the room; the return air pipeline is used for exhausting indoor air outdoors;
the fresh air pipeline and the return air pipeline respectively comprise a heat exchange section, and heat exchange and recovery are carried out on the fresh air pipeline and the return air pipeline in the heat exchange section; the second evaporator is connected with the air conditioner direct expansion outdoor unit through a second refrigerant pipe;
the radiation drain pipe is communicated with a water outlet or a water return pipeline of the radiation cooling terminal and is used for discharging water flowing out of the radiation cooling terminal; a fifth control valve is arranged on the radiation drain pipe;
the method comprises the following steps:
s10, collecting condensate water generated by an air conditioner condensate water source by using a heat preservation water tank;
s20, starting the fresh air system, enabling the air conditioner direct expansion outdoor unit and the second evaporator to work, and inputting fresh cold air into a room through the fresh air pipeline;
s30, monitoring water temperature t of condensed water in heat preservation water tank at moment 1 The water temperature at the water inlet of the radiation cooling terminal is set to be t 0 ；
When (t) 0 +1）≤t1＜（t 0 +10), the sixth control valve is opened, the condensed water in the heat-preserving water tank is input into the radiation cooling terminal through the water supply pipeline by using the circulating pump, and the condensed water in the water supply pipeline is subjected to compensatory refrigeration by using the compensatory refrigeration unit, so that the water supply temperature t at the water inlet of the radiation cooling terminal 2 Equal to the set water temperature t 0 The method comprises the steps of carrying out a first treatment on the surface of the Simultaneously, a fifth control valve is opened, and water flowing out from the radiation cooling terminal is discharged out of the radiation cooling system;
when (t) 0 -2）≤t 1 ＜（t 0 +1), closing the compensation refrigeration unit, opening a sixth control valve, and directly inputting condensed water in the heat preservation water tank into the radiation cooling terminal through a water supply pipeline by using a circulating pump; opening a fifth control valve to discharge water flowing out of the radiation cooling terminal out of the radiation cooling system;
when t 1 ＜（t 0 -2) switching off the compensation refrigeration unit; a sixth control valve is opened, and condensed water in the heat preservation water tank is directly input into the radiation cooling terminal through a water supply pipeline by using a circulating pump; opening a second control valve on the return water pipeline, inputting return water flowing out of the radiation cooling terminal into a water supply pipeline, and mixing the return water with new condensate water flowing out of the self-heat-preservation water tank; the water discharge amount of the radiation cooling system is controlled by a fifth control valve, the water return amount which is returned to the water supply pipeline is controlled by a second control valve, and the new condensate water amount which flows into the water supply pipeline in the self-heat-preservation water tank is controlled by a sixth control valve, so that the proportion of the water return amount to the new condensate water is adjusted, and the water supply temperature t at the water inlet of the radiation cooling terminal is caused 2 Equal to the set water temperature t 0 The method comprises the steps of carrying out a first treatment on the surface of the If the fifth control valve is closed, the second control valve is opened to the maximum extent, and the water supply temperature t at the water inlet of the radiation cooling terminal 2 Still lower than the set water temperature t 0 Temporarily closing the sixth control valve, and circulating backwater in a closed loop system formed by the water supply pipeline, the radiation cooling terminal and the backwater pipeline by using the circulating pump until the water supply temperature t at the water inlet of the radiation cooling terminal 2 Not lower than the set water temperature t 0 ；
When (t) 0 +10）≤t 1 And when the heat-insulating water tank is closed, the sixth control valve is closed, and condensed water in the heat-insulating water tank is discharged out of the radiation cooling system.
2. The radiation cooling method according to claim 1, wherein an ultraviolet sterilizer for sterilization is provided in the heat preservation water tank.
3. The radiant cooling method of claim 1 wherein the condensed water line is provided with a first filter, a scrubber and/or an integrated electronic water treatment apparatus.
4. The radiant cooling method of claim 1 wherein the compensating refrigeration unit is a first evaporator;
the first evaporator is connected with the air conditioner direct expansion outdoor unit through a first refrigerant pipe.
5. The radiant cooling method of claim 1 wherein a drain port is provided at the bottom of the insulated water tank, the drain port being in communication with a drain line, the drain line being provided with a first control valve.
6. The radiant cooling method of claim 5 wherein the top of the side wall of the insulated water tank is provided with an overflow port which communicates with the drain line via a water overflow line.
7. The radiant cooling method of claim 1 further comprising a central controller and a temperature sensor; the central controller is respectively connected with the first control valve, the second control valve, the third control valve, the fifth control valve, the sixth control valve and the temperature sensor; the temperature sensor includes: the device comprises a first sensor for sensing the temperature of condensed water in the heat preservation water tank, a second sensor for sensing the temperature of condensed water in the water supply pipeline, and a third sensor for sensing the room temperature of the radiation cooling terminal.
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| CN114811871B (en) * | 2022-04-02 | 2023-10-31 | 海信（广东）空调有限公司 | Air conditioner and attenuation compensation control method of water pump thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102538112A (en) * | 2012-03-20 | 2012-07-04 | 上海理工大学 | Household heat and humidity separate control radiation air conditioning system and control method thereof |
| CN202613835U (en) * | 2012-03-26 | 2012-12-19 | 中国港中旅集团公司 | Simultaneous cold and heat supply energy-saving system |
| CN102840634A (en) * | 2011-06-24 | 2012-12-26 | 杭州三花研究院有限公司 | Air conditioning system |
| CN203837184U (en) * | 2014-05-29 | 2014-09-17 | 重庆大学 | Active type radiant panel heat exchange system |
| CN104776574A (en) * | 2015-01-16 | 2015-07-15 | 李国胜 | Variable refrigerant flow radiation air-conditioning system |
| CN106839228A (en) * | 2017-04-01 | 2017-06-13 | 重庆大学 | A kind of air-conditioning system and its cooling control method with fresh air dehumidification function |
| CN109282406A (en) * | 2018-10-29 | 2019-01-29 | 江苏紫东建筑科技股份有限公司 | The terrestrial surface radiation cold supply system of a kind of self-balancing and for cooling control method |
| CN109945354A (en) * | 2019-01-25 | 2019-06-28 | 东南大学 | Family formula radiation air-conditioning and the effective integrated processing unit of fresh air and operation method |
| CN210532590U (en) * | 2019-09-19 | 2020-05-15 | 航天建筑设计研究院有限公司 | Radiation cooling system |
-
2019
- 2019-09-19 CN CN201910886656.0A patent/CN110567074B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102840634A (en) * | 2011-06-24 | 2012-12-26 | 杭州三花研究院有限公司 | Air conditioning system |
| CN102538112A (en) * | 2012-03-20 | 2012-07-04 | 上海理工大学 | Household heat and humidity separate control radiation air conditioning system and control method thereof |
| CN202613835U (en) * | 2012-03-26 | 2012-12-19 | 中国港中旅集团公司 | Simultaneous cold and heat supply energy-saving system |
| CN203837184U (en) * | 2014-05-29 | 2014-09-17 | 重庆大学 | Active type radiant panel heat exchange system |
| CN104776574A (en) * | 2015-01-16 | 2015-07-15 | 李国胜 | Variable refrigerant flow radiation air-conditioning system |
| CN106839228A (en) * | 2017-04-01 | 2017-06-13 | 重庆大学 | A kind of air-conditioning system and its cooling control method with fresh air dehumidification function |
| CN109282406A (en) * | 2018-10-29 | 2019-01-29 | 江苏紫东建筑科技股份有限公司 | The terrestrial surface radiation cold supply system of a kind of self-balancing and for cooling control method |
| CN109945354A (en) * | 2019-01-25 | 2019-06-28 | 东南大学 | Family formula radiation air-conditioning and the effective integrated processing unit of fresh air and operation method |
| CN210532590U (en) * | 2019-09-19 | 2020-05-15 | 航天建筑设计研究院有限公司 | Radiation cooling system |
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