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Solution dehumidifying fresh air unit using indoor exhaust evaporation cooling

A technology of evaporative cooling and fresh air unit, which is applied in energy recovery systems for ventilation and heating, applications, household heating, etc. It can solve the problems of limited fresh air cooling range and low humidity content, so as to improve indoor air quality and enhance cooling capacity, the effect of improving energy efficiency

Active Publication Date: 2010-09-29
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the outdoor temperature is very high and the humidity is relatively low during the air-conditioning season, it is only necessary to cool down the fresh air. The recycler has a limited cooling range for the fresh air

Method used

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  • Solution dehumidifying fresh air unit using indoor exhaust evaporation cooling
  • Solution dehumidifying fresh air unit using indoor exhaust evaporation cooling
  • Solution dehumidifying fresh air unit using indoor exhaust evaporation cooling

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Such as figure 1 As shown, the fresh air unit in this embodiment includes a solution circulation system, a heat pump system and an evaporative cooling water system.

[0018] The solution circulation system includes an interstage solution circulation loop formed by connecting the dehumidification module A and the regeneration module B, and a plate heat exchanger 1 is arranged on the interstage solution circulation loop between the dehumidification module A and the regeneration module B. The regeneration module B is provided with a replenishment valve 2 for adjusting the concentration of the solution in the regeneration module B.

[0019] The heat pump system includes a heat pump circulation loop composed of a compressor 3, a condenser 4, a throttle valve 5 and an evaporator 6 connected in sequence, and the heat pump circulation loop is filled with refrigerant. The heat exchange end of the condenser 4 is connected to the regeneration module B through a solution circulati...

Embodiment 2

[0023] Such as figure 2 As shown, the difference between this embodiment and Embodiment 1 is that the fresh air unit of this embodiment includes two sets of dehumidification modules A1, A2, two sets of regeneration modules B1, B2 and two sets of evaporative cooling modules C1, C2, and the heat pump system includes Two heat pump circulation loops, compressor 3, condenser 4, throttle valve 5 and evaporator 6 are connected in sequence to form a heat pump circulation loop, which is used to cool the solution entering the dehumidification module A1 and heat the solution entering the regeneration module B1; the compressor 3. The condenser 4', the throttle valve 5 and the evaporator 6' are sequentially connected to form another heat pump cycle for cooling the solution entering the dehumidification module A2 and heating the solution entering the regeneration module B2. Since the dehumidification unit, regeneration unit and evaporative cooling unit in the fresh air unit of this embodim...

Embodiment 3

[0026] Such as image 3 As shown, the difference between this embodiment and Embodiment 2 is that an auxiliary evaporative cooling module D and an auxiliary condenser 10 are added to the fresh air unit of this embodiment, and the auxiliary evaporative cooling module D is arranged side by side outside the regenerative module B, and the auxiliary The evaporative cooling module D is connected to the heat exchange end of the auxiliary condenser 10 through a water circulation pump 9 to form a water heating circuit. The auxiliary condenser 10 is used to heat the water entering the auxiliary evaporative cooling module D, so as to discharge excess water from each condenser in the heat pump system. heat. The inlet of the heat exchange end of the auxiliary condenser 10 is connected in parallel with the outlet of the compressor 3 , the outlet of the heat exchange end of the auxiliary condenser 10 is connected in parallel with the inlet of the throttle valve 5 , and the inlet end of the a...

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Abstract

The invention relates to a solution dehumidifying fresh air unit using indoor exhaust evaporation cooling, which is characterized in that the solution dehumidifying fresh air unit comprises a solution circulation system, a heat pump system and an evaporation cooling water system, wherein the solution circulation system comprises an inter-level solution circulation loop formed by a dehumidifying module and a corresponding regeneration module through being connected, the heat pump system comprises a heat pump circulation loop formed by a compressor, evaporators, condensers and a throttle valve, refrigeration working media are filled in the heat pump circulation loop, the heat exchange end of each condenser is connected with one corresponding regeneration module through a solution circulation pump for forming a solution heating loop, the heat exchange end of each evaporator is connected with one corresponding dehumidifying module through a solution circulation pump for forming a solution cooling loop, the evaporation cooling water system comprises a heat recovery circulation loop formed by an evaporation cooling module, an air-water heat exchanger and a water circulation pump, in addition, the evaporation cooling modules and the regeneration modules are arranged in parallel for forming indoor exhaust passages, and an air-water heat exchanger and the dehumidifying modules are arranged in parallel for forming fresh air treatment passages. The invention can be widely applied to occasions requiring the provision of dry fresh air.

Description

technical field [0001] The invention relates to a fresh air unit, in particular to a solution dehumidification fresh air unit utilizing indoor exhaust air for evaporative cooling. Background technique [0002] At present, most of the existing air conditioners adopt the condensation dehumidification treatment method, and use the refrigerator to prepare low-temperature frozen water to reduce the air temperature below the dew point, thereby realizing the dehumidification treatment process for the fresh air. Since the required cold source temperature is very low (lower than the dew point temperature of the air), the evaporation temperature of the refrigerator is reduced, which seriously affects the coefficient of performance of the refrigerator. Moreover, the condensed water produced by condensation dehumidification is easy to breed mold and seriously affect the indoor air quality. The solution dehumidification method uses a salt solution with hygroscopic properties as the work...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F3/00F24F12/00F24F3/14
Inventor 刘晓华张海强张涛江亿陈晓阳
Owner TSINGHUA UNIV
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