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 h

Method used

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  • Anti-frosting fresh air heat recovery device

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0009] On the exhaust side, the indoor return air (state point ①) is pre-cooled by the heat pump evaporator (3) and reaches the state point ②, and then flows through the dehumidification zone of the dehumidification rotor (2) to reach the state point ③ after heating and dehumidifying. After passing through the heat recovery core (1) and performing heat exchange with outdoor fresh air, the temperature drops to the state point ④ and is discharged outdoors.

[0010] For the fresh air side, the outdoor fresh air (state point ⑤) exchanges heat with the exhaust air through the heat recovery core (1) and the temperature rises to reach state point ⑥, and then reaches state point ⑦ after being reheated by the heat pump condenser (4). It then flows through the regeneration zone of the dehumidification runner (2) to reach the state point ⑧ after being cooled and humidified and sent into the room.

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

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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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