CN1526999A - Indirectly evaporating cooling energy-saving air conditioning ventilation system - Google Patents

Indirectly evaporating cooling energy-saving air conditioning ventilation system Download PDF

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Publication number
CN1526999A
CN1526999A CNA03151037XA CN03151037A CN1526999A CN 1526999 A CN1526999 A CN 1526999A CN A03151037X A CNA03151037X A CN A03151037XA CN 03151037 A CN03151037 A CN 03151037A CN 1526999 A CN1526999 A CN 1526999A
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CN
China
Prior art keywords
air
gas
heat exchanger
water
heat
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Pending
Application number
CNA03151037XA
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Chinese (zh)
Inventor
文 王
王文
余霞
肖萧
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Shanghai Jiaotong University
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Shanghai Jiaotong University
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Publication date
Application filed by Shanghai Jiaotong University filed Critical Shanghai Jiaotong University
Priority to CNA03151037XA priority Critical patent/CN1526999A/en
Publication of CN1526999A publication Critical patent/CN1526999A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007Indoor units, e.g. fan coil units

Abstract

The indirectly evaporating and cooling energy-saving air conditioning ventilation system has exhaust channel and air intake channel as two separated cavities. There are air humidifier set inside the exhaust channel, air-liquid heat exchanger set inside the air intake channel, air-air heat exchangers homogeneously distributed between the air intake channel and the exhaust channel. The air humidifier utilizes the condensated water of the air conditioning system to further lower the temperature of the exhausted air, resulting in lowered temperature of the intake air via heat exchange, raised fresh air pre-cooling effect, reduced cooling load and decreased condensated water drainage. The present invention may be used in various kinds of air conditioning systems, especially those used in summer and generating condensated water in relatively great amount.

Description

Indirect evaporation cooled air conditioner ventilation energy conserving system
Technical field:
The present invention relates to a kind of indirect evaporation cooled air conditioner ventilation energy conserving system, is a kind of full heat reclamation type air conditioner energy-saving system, belongs to air-conditioning technical field.
Background technology:
In the environment of air-conditioner operation, air-conditioner is circulate heating or cooling of the air with enclosure space, and time one long air quality will reduce greatly.The needs that therefore the air-conditioning fresh-air ventilation is arranged mostly, but if wish energy-conservation ventilation, just need in ventilation, new wind and air draft be carried out exchange heat or heat recovery.
The air draft heat exchange form of advancing of existing air-conditioning is divided two kinds of sensible heat heat exchange and complete hot heat exchanges.Simple sensible heat heat exchange mainly utilizes into, the potential difference between temperature of outgoing air, make new wind (air intake) recovery section heat (or cold) from air draft, be characterized in into, exhausting duct isolates fully, but can only carry out the sensible heat exchange, if it is little to advance between air draft temperature difference, then be difficult to new wind is carried out precooling.General total-heat exchanger not only utilizes into, the temperature difference in the air draft, and utilizes the psychrometric difference between them to carry out the exchange of heat and quality.Though but the full heat of runner type total-heat exchanger commonly used (enthalpy) organic efficiency is higher than sensible heat exchanger, be difficult to guarantee the isolation fully between air inlet and out let, cost is higher.In addition, the full heat of penetration membrane type total-heat exchanger (enthalpy) organic efficiency also is higher than sensible heat exchanger, but its heat, matter exchange efficiency are subjected to the permeable membrane performance impact big, the cleannes of advancing air draft is required high, and intensity and service life are poor than other heat exchanger.
Evaporation cooling technique is used to some extent in field of air conditioning, and its process is similar to the equal-enthalpy humidifying process, and condition is that airborne humidity does not reach capacity, and in humidification, the temperature of air just descends.Usually directly the evaporative cooling application is more, though this is a kind of type of cooling of cheap and simple, can increase indoor air humidity gradually, if humidity is excessive, will cause that also people are seriously uncomfortable.Indirect evaporation cooling is to be isolated with dividing wall type heat exchanger by the gas of humidification and the gas that is cooled, and makes the gas that is cooled reach cooling and humidification not.Indirect evaporative cooling technology has the application aspect the enforcing condensation heat exchange at present, but does not still have article report or product appearance in the application aspect the precooling air conditioner fresh air.
In addition, the recycling of air conditioner condensate water focuses mostly at present on the exchange capability of heat that improves condenser, and the application that is used in the air conditioner fresh air precooling does not see in the literature that too report is arranged.
Summary of the invention:
The objective of the invention is at the deficiencies in the prior art, design provides a kind of indirect evaporation cooled air conditioner ventilation energy conserving system, and is simple in structure, with low cost, has the good and good reliability of into air draft isolation, and the characteristics of good energy-conserving effect.
For realizing such purpose, air conditioner energy-saving system provided by the invention, the indirect evaporation cooling is reclaimed effective the combination with exhaust heat, become by water interface channel, air humidifying device, air inlet and out let, gas-gas heat exchanger and gas-liquid heat exchanger package, exhausting duct and air inlet duct are two isolated each other cavitys, realize between air inlet and out let isolating fully.Arrange air humidifying device in exhausting duct, be furnished with gas-liquid heat exchanger in the air inlet duct, be evenly equipped with gas-gas heat exchanger in the air inlet and out let, heat exchanger adopts the sensible heat type heat exchanger, and air flows and driven by a blower fan respectively in the air inlet and out let.The water interface channel through gas-liquid heat-exchange, enters air humidifying device earlier again with extraneous water or air conditioner condensate water drawing-in system, and remaining water can be discharged after collecting.
The water that is used for humidification in the air humidifying device can be used the condensed water from the air conditioner group, and air draft temperature behind humidification further reduces, and by gas-gas heat exchanger EAT is reduced, thereby makes air intake obtain precooling.Damping device can be placed on the import of exhausting duct, before the gas-gas heat exchanger, also can be placed in the middle of the gas-gas heat exchanger, or directly by water-distributing device with the gas-gas heat exchanger surface of water distribution at exhaust side.Gas-gas heat exchanger can adopt heat-tube heat exchanger or plate type heat exchanger.
The present invention makes air draft in humidification, mainly obviously reduces because of water evaporates causes the humid air temperature behind the humidification, thereby the temperature difference between air draft and air intake is increased, and by gas-gas heat exchanger, new wind-warm syndrome degree obtains precooling greatly.In addition, at the southern china wide geographic area, high humidity, condensate temperature is lower, and condensation water quantity is bigger, general actual humidification amount is in about 50% of condensed water output, even through behind the humidification, water temperature will have the bigger temperature difference with the new wind of new wind even process gas-gas heat exchanger, continues new wind cooling with gas-liquid heat-exchange again, liquid in the gas-liquid heat-exchange is the lower air-conditioning system condensed water of temperature, can realize the degree of depth recuperation of heat of air-conditioning system.Gas-gas heat exchanger of the present invention and gas-liquid heat-exchange all are the sensible heat type heat exchangers, but system has utilized condensed water to carry out full heat exchange, and its energy-saving effect obviously is better than simple sensible heat exchanger.And realized between air inlet and out let isolating fully, the reliability height of heat-exchange system, intensity is good, and cost is lower.For advance, temperature of outgoing air difference and the less air-conditioning system of psychrometric difference, also can reach energy-saving effect preferably.Summer air-conditioning in use all has the condensed water of flash-pot or surface cooler, by damping device to the exhaust humidification, not only improved the precooling effect of new wind, saved the extra cooling load that part is brought because of fresh-air ventilation, and reduced the air conditioner condensate water emission problem.
The present invention can be applicable in the air-conditioning system and air-conditioner of large, medium and small type, is particularly useful in the air-conditioning system that use, that more condensed water is arranged in summer.
Description of drawings:
Fig. 1 is a basic structure schematic diagram of the present invention.
Among Fig. 1, water interface channel 1, air humidifying device 2, exhausting duct 3, air inlet duct 4, gas-gas heat exchanger 5, gas-liquid heat-exchange 6, air inlet duct blower fan 7, exhausting duct blower fan 8.
The specific embodiment:
One embodiment of the present of invention adopt typical structure shown in Figure 1.As shown in Figure 1, indirect evaporation cooled air conditioner ventilation energy conserving system is made up of water interface channel 1, air humidifying device 2, exhausting duct 3, air inlet duct 4, gas-gas heat exchanger 5, gas-liquid heat-exchange 6, exhausting duct 3 is two isolated each other cavitys with air inlet duct 4, arrange air humidifying device 2 in the exhausting duct 3, in air inlet duct 4, arrange gas-liquid heat-exchange 6, be evenly equipped with gas-gas heat exchanger 5 in air inlet duct 4, the exhausting duct 3, air flows and is driven by air inlet duct blower fan 7 and exhausting duct blower fan 8 respectively in the air inlet and out let.
Air humidifying device 2 is placed on the import of exhausting duct 3, before the gas-gas heat exchanger 5, be used for the condensed water of the hydromining of humidification with air-conditioning system, air draft temperature behind humidification further reduces, by gas-gas heat exchanger 5 and gas-liquid heat-exchange 6 EAT is reduced, thereby make air intake obtain precooling.Water interface channel 1 is introduced extraneous water (or air conditioner condensate water) in the native system, through gas-liquid heat-exchange 6, enters air humidifying device 2 more earlier, and remaining water can be discharged after collecting.
Gas-gas heat exchanger 5 among the embodiment is a kind of heat exchange of heat pipes, and it can allow the gas of flowing through in exhausting duct 3 and the air inlet duct 4 carry out the sensible heat exchange.
5 of damping device 2 and gas-gas heat exchangers needn't be provided with water fender.Damping device 2 also can be placed in the middle of the gas-gas heat exchanger 5, or directly by water-distributing device with gas-gas heat exchanger 5 surfaces of water distribution at exhaust side.
If be applied in the central air conditioner system, blower fan 7 and blower fan 8 also can omit.

Claims (2)

1, a kind of indirect evaporation cooled air conditioner ventilation energy conserving system, comprise air inlet and out let and heat exchanger, it is characterized in that exhausting duct (3) and air inlet duct (4) are two isolated each other cavitys, arrange air humidifying device (2) in the exhausting duct (3), air inlet duct (4), be evenly equipped with gas-gas heat exchanger (5) in the exhausting duct (3), arrange gas-liquid heat-exchange (6) in the air inlet duct (4), be evenly equipped with blower fan (7 in the air inlet and out let, 8), water interface channel (1) is with extraneous water or air conditioner condensate water drawing-in system, earlier through gas-liquid heat-exchange (6), enter air humidifying device (2) again, remaining water is discharged after collecting.
2, as the said indirect evaporation cooled of claim 1 air conditioner ventilation energy conserving system, it is characterized in that air humidifying device (2) is placed on the import of exhausting duct (3), gas-gas heat exchanger (5) before, or be placed in the middle of the gas-gas heat exchanger (5), or directly by water-distributing device with gas-gas heat exchanger (5) surface of water distribution at exhaust side.
CNA03151037XA 2003-09-18 2003-09-18 Indirectly evaporating cooling energy-saving air conditioning ventilation system Pending CN1526999A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNA03151037XA CN1526999A (en) 2003-09-18 2003-09-18 Indirectly evaporating cooling energy-saving air conditioning ventilation system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNA03151037XA CN1526999A (en) 2003-09-18 2003-09-18 Indirectly evaporating cooling energy-saving air conditioning ventilation system

Publications (1)

Publication Number Publication Date
CN1526999A true CN1526999A (en) 2004-09-08

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103453627A (en) * 2013-08-21 2013-12-18 苏州康华净化系统工程有限公司 Constant temperature and humidity system
CN105276736A (en) * 2015-11-25 2016-01-27 南通华信中央空调有限公司 Heat pump type total heat recovery new-air air conditioning unit with condensation reheating function
CN105318588A (en) * 2015-11-23 2016-02-10 王琳 Double-machine-head air-cooled screw chiller water circulator
CN105841268A (en) * 2016-03-28 2016-08-10 上海交通大学 Waste water waste heat driving type dry air cooling water conditioner system and operation method thereof
CN105841267A (en) * 2016-03-28 2016-08-10 上海交通大学 Waste water afterheat drive type air conditioning fresh air system and operation method thereof

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103453627A (en) * 2013-08-21 2013-12-18 苏州康华净化系统工程有限公司 Constant temperature and humidity system
CN105318588A (en) * 2015-11-23 2016-02-10 王琳 Double-machine-head air-cooled screw chiller water circulator
CN105276736A (en) * 2015-11-25 2016-01-27 南通华信中央空调有限公司 Heat pump type total heat recovery new-air air conditioning unit with condensation reheating function
CN105276736B (en) * 2015-11-25 2018-05-22 南通华信中央空调有限公司 A kind of heat pump type total heat recovering fresh air air-conditioner set of band condensation reheating
CN105841268A (en) * 2016-03-28 2016-08-10 上海交通大学 Waste water waste heat driving type dry air cooling water conditioner system and operation method thereof
CN105841267A (en) * 2016-03-28 2016-08-10 上海交通大学 Waste water afterheat drive type air conditioning fresh air system and operation method thereof
CN105841268B (en) * 2016-03-28 2018-06-05 上海交通大学 Waste water residual heat drive-type dry-air blast cooling water air conditioner system and its operation method
CN105841267B (en) * 2016-03-28 2018-07-17 上海交通大学 Waste water residual heat driving type air conditioner fresh air system and its operation method

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