CN1789867A - Multi-connected refrigeration method and system with directly evaporated liquid refrigerant supplied by liquid pump - Google Patents
Multi-connected refrigeration method and system with directly evaporated liquid refrigerant supplied by liquid pump Download PDFInfo
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- CN1789867A CN1789867A CN 200510135473 CN200510135473A CN1789867A CN 1789867 A CN1789867 A CN 1789867A CN 200510135473 CN200510135473 CN 200510135473 CN 200510135473 A CN200510135473 A CN 200510135473A CN 1789867 A CN1789867 A CN 1789867A
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Abstract
This invention relates to one method to provide cold by directly evaporation of liquid pump in air conditioning system nature cold energy utility field, which comprises the following parts: Low temperature cold source, condenser liquid device, liquid storage device, liquid pump, control valve, indoor machine and cold medium pipe. This invention is characterized by the following: using phase cold medium as cold medium and then transporting to the air conditioning area each indoor machine through pump to absorb indoor remaining gas to realize cold supplying.
Description
Technical field
The present invention relates to a kind of liquid pump to supply refrigerant and directly evaporate multiple cooling method and system, be particularly useful for having natural low temperature low-temperature receiver and water route should not or the inconvenience cooling occasion that directly enters air conditioning area, belong to low temperature cold source and utilize the air-conditioning system field.
Background technology
A kind of liquid pump to supply refrigerant directly evaporates multiple cooling method and system, its principle is to utilize low temperature cold source that gaseous coolant is carried out condensation liquefaction, by liquid pump or electric shield pump liquid refrigerants is delivered in the indoor set of air conditioning area with one times or many times of cycling rates then, liquid refrigerants is all or part of gasification of heat in the absorption chamber in indoor set, thereby realize the purpose of cooling, refrigerant after the gasification comes back in the condensation liquefaction device and liquefies, and forms the refrigerant cooling circulation of sealing.
In the prior art, the technology relevant with system principle of the present invention has refrigerant (cold-producing medium) Natural Circulation cold supply system (1., Sun Liying, horse is the best. the characteristic and the application of cryogen Natural Circulation air conditioner. and the journal .2004 of Harbin University of Commerce, 20 (6): 729～732; 2., Wu Wei, Li Juan. coolant natural circulation type air conditioner system energy-conservation. energy-conservation, 1999,5:38-39; ).It is characterised in that: on the basis of existing air-conditioning unit, between the import and export of compressor and choke valve (or capillary), add bypass pipe and valve, at the transition season or the night of need cooling, close compressor, make full use of outdoor natural low temperature surrounding air and in being in high-order condenser, gaseous coolant is carried out condensation liquefaction, refrigerant after the liquefaction flows into the evaporimeter that is in low level and carries out the endothermic gasification refrigeration under the effect of gravity, low-density cold media gas after the gasification rises along tracheae and is back to condenser condenses liquefaction, forms refrigerant Natural Circulation loop.Another kind of correlation technique be the refrigerant Natural Circulation cold supply system that combines with ice storage technology (
Http:// www.cqu.edu.cn/yuanxishezhi/chengshijianshe/ch/bkjx/ntkt/ch5.htm), it is characterised in that: the same with refrigerant Natural Circulation cold supply system form, just its used low temperature cold source is to utilize the air-conditioning unit to store by the ice storage tube at the ice of night electricity low-valley interval preparation, electric power peak period by day, cold with the ice storage tube comes condensation to be in high-order gaseous coolant (being generally freon refrigerant), and make its liquefaction, liquid refrigerants flows under the influence of gravity into the cooling that absorbs heat in the evaporimeter that is in low level, low-density gaseous coolant behind the endothermic gasification is back to condensation liquefaction along the tracheae rising and thinks highly of new liquefaction, and so circulation forms nature refrigerant cold supply system.
The deficiencies in the prior art part is: refrigerant is to rely on the effect of gravity to carry out Natural Circulation, installation site and setting height(from bottom) to each parts of system have strict requirement, promptly necessarily require the condensation liquefaction device to be in the high position of system, and evaporimeter is in the low level of system; The internal circulating load of refrigerant is to be decided by the density contrast of refrigerant and the difference in height between condensation liquefaction device and the evaporimeter simultaneously, the cold transfer rate of refrigerant is less relatively, under identical cooling amount situation, refrigerant conveyance conduit size and indoor set heat exchanger area require bigger.And prior art generally is based on existing air-conditioning unit and transforms, and system form is complicated with control, in the power station and underground civil air defense constructions and installations etc. throughout the year or seasonally have an occasion that low temperature cold source utilizes, prior art is difficult to realize the efficient utilization of natural cold-energy.Therefore, have the air-conditioning cooling occasion that the low temperature natural cooling source utilizes, press for a kind of new method and system and realize efficient, the reliable utilization of natural cooling source in the regional air conditioner cooling at some.
Summary of the invention
At the deficiencies in the prior art and defective, it is simple that purpose of the present invention and task provide a kind of system form, the compressor-free group, the cooling method and system that operation energy consumption is little, promptly utilize low temperature cold source that refrigerant is carried out condensation liquefaction, liquid pump drives the multiple indoor set cold supply system that refrigerant directly evaporates, to realize low temperature cold source, as low temperature underground water, deep layer storehouse water, the river, the river, the lake, efficient and reliable use of low temperature cold source in the regional air conditioner cooling of natural cooling source such as seawater and city time crude sewage and other form is to solve existing refrigerant Natural Circulation cold supply system to the system unit installation site with setting height(from bottom) is strict and the little problem with poor controllability of system's cooling amount.
Purpose of the present invention and task are to realize by the following technical solutions:
A kind of liquid pump to supply refrigerant directly evaporates multiple cooling method, it is characterized in that this method carries out as follows:
1) is cooling working medium with the phase transformation refrigerant, utilizes low temperature cold source that the phase transformation refrigerant is carried out condensation liquefaction; The temperature of described low temperature cold source is not higher than 18 ℃;
2) the phase transformation refrigerant behind the condensation liquefaction drives by liquid pump or electric shield pump, enters in the indoor set in cooling space directly evaporation heat absorption cooling with one times or many times of cycling rates; Gaseous state after the heat absorption or gas-liquid two-phase refrigerant are back to again and carry out condensation liquefaction in the condensation liquefaction device, form the cooling circulation; The environment temperature in described cooling space is not less than 22 ℃.
Phase transformation refrigerant of the present invention adopts R717, R134a, R22, R500 or R502.Described low temperature cold source can adopt low temperature surface water, deep layer reservoir water, underground water, river, river, lake, seawater, city time crude sewage or Cryogenic air.
The invention provides a kind of liquid pump to supply refrigerant and directly evaporate the multiple cold supply system, it is characterized in that, this cold supply system comprises:
A condensation liquefaction device utilizes low temperature cold source that the phase transformation refrigerant is carried out condensation liquefaction;
A liquid reservoir is connected with the phase transformation refrigerant side outlet of condensation liquefaction device by the refrigerant pipeline;
A liquid pump or an electric shield pump that is used to drive the refrigerant circulation links to each other with the outlet at bottom of liquid reservoir, is used for driving refrigerant and forms the cooling circulation;
A multiple indoor units is used for making becoming gaseous state or gas-liquid two-phase refrigerant after the liquid refrigerants heat absorption to realize cooling;
A phase transformation cold medium flux control and regulation valve that is installed in the indoor set porch.
In described cold supply system, described indoor units is to be made of one or more indoor sets parallel connections and/or series connection.
The present invention compared with prior art has the following advantages and the high-lighting effect: compressor-free group 1. of the present invention and pipeline by-pass collar, and system form is simple, and is reliable; 2. the present invention adopts liquid pump to drive the refrigerant circulation, and the installation site and the setting height(from bottom) of indoor set and condensation liquefaction device are not had special requirement, and system's cooling efficient height, controllability are strong; 3. the present invention is strong to the adaptability of low temperature cold source, the low temperature cold source that system adopted can be water at low temperature nature or other source or Cryogenic air, and water at low temperature can be surface water, deep layer reservoir water, underground water, river, river, lake, seawater and the city time crude sewage of low temperature etc.; 4. the energy consumption of method and system of the present invention only is the water pump of liquid pump, indoor machine fan and low-temperature receiver side or the power consumption of blower fan, and system's operation energy consumption is little, has energy-saving and environmental protection, noiseless advantage.Have low temperature cold source utilization and air-conditioning cooling zone because of the technological requirement water route the direct cooling occasion in the inlet chamber of unsuitable or inconvenience, as require waterproof, moistureproof air-conditioning cooling occasion, using the inventive method and system, to carry out cooling particularly suitable.
Description of drawings
Fig. 1 directly evaporates the structure principle chart of multiple cold supply system for liquid pump to supply refrigerant provided by the invention.
Fig. 2 directly evaporates the lgp-h figure of multiple cold supply system for liquid pump to supply refrigerant provided by the invention.
Fig. 3 directly evaporates the structure principle chart of multiple cold supply system embodiment 1 for liquid pump to supply refrigerant provided by the invention.
Fig. 4 directly evaporates the structure principle chart of multiple cold supply system embodiment 2 for liquid pump to supply refrigerant provided by the invention.
The sequence number of each parts and title are as follows among the figure: 1-condensation liquefaction device; The 2-liquid reservoir; 3-. liquid pump or electric shield pump; 4-. refrigerant pipeline; 5-. flow control regulating valve; 6-. indoor set; 7-. low temperature cold source.A → B: liquid pump pressurization; B → C: refrigerant evaporation endothermic gasification process (cooling space side); C → D: the resistance of gas phase or gas-liquid two-phase refrigerant pipeline; D → A: refrigerant condensation heat release liquefaction process (low temperature cold source side)
The specific embodiment
Be further described below in conjunction with the implementation process of accompanying drawing system of the present invention.
Fig. 1 directly evaporates the structural principle schematic diagram of multiple cold supply system for liquid pump to supply refrigerant provided by the invention.This cold supply system mainly comprises: a condensation liquefaction device 1, utilize low temperature cold source that the phase transformation refrigerant is carried out condensation liquefaction; A liquid reservoir 2 is connected with the phase transformation refrigerant side outlet of condensation liquefaction device 1 by refrigerant pipeline 4; A liquid pump or an electric shield pump 3 that is used to drive the refrigerant circulation links to each other with the outlet at bottom of liquid reservoir 2, is used for driving refrigerant and forms the cooling circulation; A multiple indoor units 6 is that in parallel and/or series connection constitutes by one or more indoor sets, is used for making becoming gaseous state or gas-liquid two-phase refrigerant after the liquid refrigerants heat absorption to realize cooling; A phase transformation cold medium flux control and regulation valve 5 that is installed in the indoor set porch.The present invention is a cooling working medium with the phase transformation refrigerant, utilizes low temperature cold source that the phase transformation refrigerant is carried out condensation liquefaction; The phase transformation refrigerant can adopt R717, R134a, R22, R500 or R502.Low temperature cold source can adopt low temperature surface water, deep layer reservoir water, underground water, river, river, lake, seawater, city time crude sewage or Cryogenic air, and temperature generally is not higher than 18 ℃.Phase transformation refrigerant behind the condensation liquefaction drives by liquid pump or electric shield pump, enters in the indoor set in cooling space directly evaporation heat absorption cooling with one times or many times of cycling rates; The environment temperature in described cooling space is not less than 22 ℃.Gaseous state after the heat absorption or gas-liquid two-phase refrigerant are back to again and carry out condensation liquefaction in the condensation liquefaction device, form the cooling circulation.
Fig. 2 directly evaporates the lgp-h figure of multiple cold supply system for liquid pump to supply refrigerant provided by the invention.A among the figure → B process is the pressurizations of liquid reservoir 2 outlet liquid phase-change refrigerants through liquid pump, and the A point is the saturated liquid state or the supercooled state point of phase transformation refrigerant after 1 liquefaction of condensation liquefaction device, and the B point is the supercooled state point of liquid phase-change refrigerant after liquid pump 3 boosts; B → C process is the evaporation endothermic gasification process of liquid refrigerants in indoor units 6, the C point is the gas phase or the gas-liquid two-phase state point of indoor units 6 exit phase transformation refrigerants, the D point is the phase transformation refrigerant state point of condensation liquefaction device 1 inlet, and C → D process is the resistance of indoor set 6 to gas phase between the condensation liquefaction device 1 or gas-liquid two-phase refrigerant pipeline; D → A process is that gaseous coolant utilizes low temperature cold source 7 to carry out the exothermic process of condensation liquefaction in condensation liquefaction device 1.
Embodiment 1:
According to accompanying drawing 3 with liquid reservoir 2 by refrigerant pipeline 4 be connected with the refrigerant side outlet of the condensation liquefaction device 1 of low temperature cold source 7 heat exchange, and the suction inlet of electric shield pump 3 is connected to the bottom refrigerant exit of liquid reservoir 2 by refrigerant pipeline 4, outlet with liquid pump or electric shield pump 3 simultaneously is connected with 1 indoor set 6 by refrigerant pipeline 4, and at the inlet of indoor set 6 installing cold medium flux control and regulation valve 5, the outlet of indoor set 6 enters the mouth by the refrigerant side draught that refrigerant pipeline 4 is connected to condensation liquefaction device 1, forms a complete enclosed loop.In this inventive method and system, be cooling working medium, adopt 16 ℃ water at low temperature to be delivered in the condensation liquefaction device 1, the gaseous refrigerant R134a that enters in the condensation liquefaction device 1 is carried out condensation liquefaction by water pump with freon refrigerant R134a; Liquid refrigerant after the liquefaction is stored in the liquid reservoir 2, liquid refrigerant is extracted out and be delivered to the indoor set 6 with single times of cycling rate from the bottom of liquid reservoir 2 by electric shield pump 3 then through refrigerant line 4, liquid refrigerant in indoor set 6 in the absorption chamber waste heat carry out dry type evaporation gasification, thereby realize cooling.Cold-producing medium behind the endothermic gasification is back under the driving of liquid pump 3 and carries out condensation liquefaction again in the condensation liquefaction device 1, and so circulation realizes utilizing the dry type of water at low temperature condensation liquefaction, the circulation of liquid pump driving cold-producing medium directly to evaporate cooling.
Embodiment 2:
With reference to the accompanying drawings 4 with liquid reservoir 2 by refrigerant pipeline 4 be connected with the refrigerant side outlet of the condensation liquefaction device 1 of low temperature cold source 7 heat exchange, and the suction inlet of liquid pump 3 is connected to the bottom refrigerant exit of liquid reservoir 2 by refrigerant pipeline 4, outlet with liquid pump or electric shield pump 3 simultaneously is connected by the indoor set 6 of refrigerant pipeline 4 with many strings and series-parallel connection, wherein each indoor set joins end to end in Chuan Lian the indoor units, and at the inlet of each indoor set 6 in parallel installing cold medium flux control and regulation valve 5, the outlet of each indoor set 6 in parallel enters the mouth by the refrigerant side draught that refrigerant pipeline 4 is connected to condensation liquefaction device 1, forms a complete enclosed loop.In this inventive method and system, be cooling working medium, adopt 18 ℃ natural low temperature air to be delivered in the condensation liquefaction device 1, the gaseous refrigerant R717 that enters in the condensation liquefaction device 1 is carried out condensation liquefaction by blower fan with freon refrigerant R134a; Liquid refrigerant after the liquefaction is stored in the liquid reservoir 2, liquid refrigerant is extracted out and be delivered to the indoor set 6 with many times of cycling rates from the bottom of liquid reservoir 2 by liquid pump 3 then through refrigerant line 4, liquid refrigerant is evaporation gasification in waste heat rear section in the absorption chamber in indoor set 6, thereby realizes cooling.Gas-liquid two-phase cold-producing medium behind the part endothermic gasification is back under the driving of liquid pump 3 and carries out condensation liquefaction in the condensation liquefaction device 1 again, and so circulation realizes directly evaporation cooling of the many multiplying power circulations of the cold-producing medium that utilizes Cryogenic air condensation liquefaction, liquid pump to drive.
Claims (5)
1. a liquid pump to supply refrigerant directly evaporates multiple cooling method, it is characterized in that this method carries out as follows:
1) is cooling working medium with the phase transformation refrigerant, utilizes low temperature cold source that the phase transformation refrigerant is carried out condensation liquefaction; The temperature of described low temperature cold source is not higher than 18 ℃;
2) the phase transformation refrigerant behind the condensation liquefaction drives by liquid pump or electric shield pump, enters in the indoor set in cooling space directly evaporation heat absorption cooling with one times or many times of cycling rates; Gaseous state after the heat absorption or gas-liquid two-phase refrigerant are back to again and carry out condensation liquefaction in the condensation liquefaction device, form the cooling circulation; The environment temperature in described cooling space is not less than 22 ℃.
2. directly evaporate multiple cooling method according to the described a kind of liquid pump to supply refrigerant of claim 1, it is characterized in that: described phase transformation refrigerant adopts R717, R134a, R22, R500 or R502.
3. directly evaporate multiple cooling method according to described a kind of liquid pump to supply refrigerant of claim 1, it is characterized in that: described low temperature cold source adopts low temperature surface water, deep layer reservoir water, underground water, river, river, lake, seawater, city time crude sewage or Cryogenic air.
4. a liquid pump to supply refrigerant directly evaporates the multiple cold supply system, it is characterized in that, this cold supply system comprises:
A condensation liquefaction device (1) utilizes low temperature cold source that the phase transformation refrigerant is carried out condensation liquefaction;
A liquid reservoir (2) is connected with the phase transformation refrigerant side outlet of condensation liquefaction device (1) by refrigerant pipeline (4);
A liquid pump or an electric shield pump (3) that is used to drive the refrigerant circulation links to each other with the outlet at bottom of liquid reservoir (2), is used for driving refrigerant and forms the cooling circulation;
A multiple indoor units is used for making becoming gaseous state or gas-liquid two-phase refrigerant after the liquid refrigerants heat absorption to realize cooling;
A phase transformation cold medium flux control and regulation valve (5) that is installed in the indoor set porch.
5. directly evaporate the multiple cold supply system according to the described liquid pump to supply refrigerant of claim 4, it is characterized in that: described indoor units is to be made of one or more indoor sets parallel connections and/or series connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510135473 CN1789867A (en) | 2005-12-31 | 2005-12-31 | Multi-connected refrigeration method and system with directly evaporated liquid refrigerant supplied by liquid pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510135473 CN1789867A (en) | 2005-12-31 | 2005-12-31 | Multi-connected refrigeration method and system with directly evaporated liquid refrigerant supplied by liquid pump |
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| CN1789867A true CN1789867A (en) | 2006-06-21 |
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| CN 200510135473 Pending CN1789867A (en) | 2005-12-31 | 2005-12-31 | Multi-connected refrigeration method and system with directly evaporated liquid refrigerant supplied by liquid pump |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032924A (en) * | 2011-09-29 | 2013-04-10 | 艾默生网络能源有限公司 | Air conditioning system |
| CN107024045A (en) * | 2011-06-13 | 2017-08-08 | 阿雷斯科技术有限公司 | Condenser-reboiler system and its operating method |
-
2005
- 2005-12-31 CN CN 200510135473 patent/CN1789867A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107024045A (en) * | 2011-06-13 | 2017-08-08 | 阿雷斯科技术有限公司 | Condenser-reboiler system and its operating method |
| CN107024045B (en) * | 2011-06-13 | 2020-01-31 | 阿雷斯科技术有限公司 | Condenser evaporator system and method of operating same |
| CN103032924A (en) * | 2011-09-29 | 2013-04-10 | 艾默生网络能源有限公司 | Air conditioning system |
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