Heat recovery solution dehumidifying fresh air handling unit

A technology of solution dehumidification and fresh air unit, which is applied in space heating and ventilation, details of space heating and ventilation, energy recovery system for ventilation and heating, etc. It can solve the problem of solution concentration reduction and achieve the improvement of heat carrying capacity, Humidity increase, avoid regeneration target effect

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

However, the function of the regeneration module itself is to increase the concentration of the solution and realize the concentrated regeneration of the solution, while replenishing water directly leads to a decrease in the concentration of the solution. There is a significant contradiction between the two

Method used

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  • Heat recovery solution dehumidifying fresh air handling unit
  • Heat recovery solution dehumidifying fresh air handling unit
  • Heat recovery solution dehumidifying fresh air handling unit

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0021] like figure 1 As shown, the fresh air unit of this embodiment includes a solution circulation system, a heat pump system and an evaporative cooling water system.

[0022]The solution circulation system includes two-stage total heat recovery modules A1-A2, B1-B2 composed of two gas-liquid direct contact spray modules connected in series, dehumidification modules C1, D1 and regeneration modules C2, D2. The two-stage total heat recovery modules A1-A2, B1-B2 are respectively connected with a solution circulation pump 1 to form a total heat recovery unit, and the gas-liquid directly contacts the spray modules A1, B1 and the dehumidification modules C1, D1 are arranged side by side to form a fresh air treatment channel ; Gas-liquid direct contact spray modules A2, B2 and regeneration modules C2, D2 are arranged side by side to form an indoor exhaust channel. The dehumidification module C1 is connected to the regeneration module C2, and the dehumidification module D1 is conne...

Embodiment 2

[0028] like figure 2 As shown, the difference between this embodiment and Embodiment 1 is that the heat pump system in the fresh air unit of this embodiment includes two heat pump circulation loops, the compressor 3, the condensers 4, 5, the evaporator 7 and the throttle valve 9 constitute a A heat pump circulation circuit, wherein the inlets of the condensers 4 and 5 are connected in parallel to the outlet of the compressor 3, the outlets of the condensers 4 and 5 are connected in parallel to the inlet of the throttle valve 9, and the inlet of the condenser 4 is provided with a solenoid valve 10 ; The inlet of the evaporator 7 is connected to the outlet of the throttle valve 9 in parallel, and the outlet of the evaporator 7 is connected to the inlet of the compressor 3 in parallel. Compressor 3 ', condenser 4, 6, evaporator 8 and throttling valve 9 ' constitute another heat pump cycle, wherein the inlets of condensers 4, 5 are all connected in parallel to the outlet of compr...

Embodiment 3

[0031] like image 3 As shown, the difference between this embodiment and Embodiment 1 is that the fresh air unit of this embodiment includes two sets of heat pump systems, and each set of heat pump systems consists of a compressor 3 (or 3′), a condenser 5 (or 6), a condenser 4 (or 4'), throttling valve 9 (or 9') and evaporator 7 (or 8) are sequentially connected to form an independent heat pump circulation loop, and the evaporative cooling module E exchanges heat with the condensers 4 and 4' respectively end in parallel.

[0032] In the above embodiments, the evaporative cooling module E can also be connected in series with the heat exchange ends of the condensers 4, 4' (not shown in the figure).

[0033] Although the structure of the fresh air unit in this embodiment is more complicated than that in Embodiment 1, because it has two sets of heat pump systems (that is, two independent heat pump circulation loops), its energy utilization efficiency is higher than that of the f...

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Abstract

The invention relates to a heat recovery solution dehumidifying fresh air handling unit, which is characterized by comprising a solution circulating system, a heat pump system and an evaporative cooling water system, wherein the solution circulating system comprises a two-stage total heat recovery module, a dehumidifying module and a regeneration module; the two-stage total heat recovery module is connected with a solution circulating pump to form a total heat recovery unit; the dehumidifying module is connected with the regeneration module to form an inter-stage solution circulation loop; the heat pump system comprises a heat pump circulation loop, which is comprised of a compressor, a first condenser, a throttle valve, an evaporator and a second condenser; the heat exchange end of the second condenser is connected with the corresponding regeneration module through the solution circulating pump to form a solution heating loop; the heat exchange end of the evaporator is connected with the corresponding dehumidifying module through the solution circulating pump to form a solution cooling loop; and the evaporative cooling water system comprises a water heating loop formed by communicating an evaporative cooling module with the heat exchange end of the first condenser through a water circulating pump. The heat recovery solution dehumidifying fresh air handling unit can be widely applied on occasions where dry fresh air is needed to be supplied.

Description

technical field [0001] The invention relates to a fresh air unit, in particular to a heat recovery type solution dehumidification fresh air unit combining heat pump driving and evaporative cooling. Background technique [0002] In the air conditioning system, the outdoor fresh air usually needs to be cooled and dehumidified in summer. Most of the existing air-conditioning systems adopt the condensation dehumidification treatment method, which uses a refrigerator to prepare low-temperature chilled water, and reduces the air temperature below the dew point (lower than the dew point temperature of the air), thereby realizing the dehumidification treatment process for fresh air. Because the cold water temperature required for dehumidification is much lower than the cold water temperature required for cooling, the evaporating temperature of the refrigerator is lowered, thereby reducing the performance coefficient of the refrigerator. Moreover, the condensed water produced by con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F3/147F24F12/00F24F13/30
Inventor 刘晓华张海强张涛江亿陈晓阳
Owner TSINGHUA UNIV
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