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Anti-frosting fresh air heat recovery device

A new air heat recovery and anti-frost technology, applied in the field of building environment and equipment engineering

Inactive Publication Date: 2020-10-16
CHINA ACAD OF BUILDING RES +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no effective method to prevent frosting of the heat recovery device by reducing the humidity of the indoor return air

Method used

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  • Anti-frosting fresh air heat recovery device
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  • Anti-frosting fresh air heat recovery device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0009] For the exhaust side, the indoor return air (status point ①) reaches the state point ② after being pre-cooled by the heat pump evaporator (3), then flows through the dehumidification zone of the dehumidification wheel (2) and reaches the state point ③ after being heated and dehumidified. After passing through the heat recovery core (1) and exchanging heat with the outdoor fresh air, the temperature drops to the state point ④ and is discharged outside.

[0010] For the fresh air side, the outdoor fresh air (status point ⑤) reaches the state point ⑥ after the heat exchange between the heat recovery core (1) and the exhaust air, and then reaches the state point ⑦ after being reheated by the heat pump condenser (4). Then flow through the regeneration zone of the dehumidification wheel (2) to cool and humidify, reach the state point ⑧ and send it into the room.

[0011] The evaporator (3), condenser (4), compressor (5), and throttling device (6) constitute a complete heat pu...

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Abstract

The invention relates to a fresh air heat recovery device with an anti-frosting function, and belongs to the technical field of building environment and equipment engineering. Based on the problem that in northern severe cold and cold areas, fresh air heat recovery devices used in different kinds of buildings are frosted and are high in anti-frosting energy consumption, the following technical scheme is provided: a heat pump drives a rotary wheel to realize dehumidification, so indoor air return humidity is lowered and frosting of the heat recovery device is prevented; compared with the regular method of electrical heating is adopted for preheating of outdoor fresh air to prevent frosting, the method can realize in-depth recovery of energy in exhausted air, the air supplying temperature ishigh, and dry fresh air can be humidified; and at the same time, energy consumption of a the heat pump is much lower than energy consumption of electrical heating, so the device has significant advantages from both the perspective of comfortableness and the perspective of energy saving.

Description

Technical field: [0001] The invention relates to a fresh air heat recovery device with anti-frost function, which belongs to the technical field of building environment and equipment engineering. Background technique: [0002] With the development of building energy conservation, it has become an increasingly common practice to apply fresh air-exhaust air two-way flow heat recovery devices to buildings to recover the energy in the exhaust air while sending fresh air into the building. In severe cold and cold areas in the north, when the outdoor temperature is low in winter, frosting will occur during the operation of the heat recovery device, which not only affects the heat recovery efficiency of the device, but even blocks the flow channel in severe cases, making the heat recovery device unable to work normally. [0003] In the vast northern regions, the winter time is long and the indoor and outdoor temperature difference is large. The energy-saving potential of fresh air ...

Claims

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Application Information

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IPC IPC(8): F24F3/14F24F5/00F24F12/00
CPCF24F3/1423F24F5/001F24F12/006F24F2203/1032F24F2203/021Y02B30/56
Inventor 王立峰曹阳袁涛
Owner CHINA ACAD OF BUILDING RES
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