Multilevel heat recovery composite dehumidifying fresh air treatment machine

Abstract

The invention discloses a multilevel heat recovery composite dehumidifying fresh air treatment machine, which comprises an air treatment path consisting of a plate heat exchanger, a precooling dehumidifier, a drying rotary wheel, a moisture heat recovery rotary wheel, an air feed temperature regulator and an air feed fan which are connected in series in turn through an air pipe, and an air regeneration path consisting of an evaporative cooler, a plate heat exchanger, a moisture heat recovery rotary wheel, a low-temperature heat pump heat recovery device, a high-temperature heat pump condenser, a drying rotary wheel, a high-temperature heat pump evaporator and a regenerating fan which are connected in series in turn. Due to multilevel heat recovery, heating energy consumption of regenerating air and cooling energy consumption of treating air are reduced, and the aim of saving energy is fulfilled. Meanwhile, due to two-stage combined dehumidification, the dehumidifying capacity of the set can be effectively improved, and the air treatment machine is applicable to air conditioning in summer and heating in winter for various public buildings, commercial buildings and industrial buildings, and is suitable for fresh air treatment for a large central air-conditioning system and particularly suitable for fresh air treatment for an independent temperature and humidity control air-conditioning system in a warm and humid area.

Description

technical field [0001] The invention relates to a fresh air processing device in the field of air conditioning, in particular to a multi-stage heat recovery composite dehumidification fresh air air processor. Background technique [0002] Saving energy consumption, reducing the discharge of environmental pollutants, and realizing sustainable development of energy are topics of common concern in the world today. Building energy consumption occupies a considerable proportion in the total energy consumption of the society. In our country, this proportion is close to 30%. Therefore, reducing building energy consumption has become one of the important tasks of energy conservation and emission reduction in our country. Air-conditioning energy consumption is the main body of building energy consumption. Saving air-conditioning energy consumption, especially air-conditioning fresh air treatment energy consumption, is an effective way to achieve building energy conservation. [0003...

AI Technical Summary

Problems solved by technology

For hot and humid areas, fresh air requires a large amount of dehumidification. Although traditional condensation dehumidification can guarantee the required amount of dehumidification, the required refrigerant temperature is low, which will lead to increased energy consumption of the refrigeration system due to performance degradation, and will inevitably lead to excessive fresh air. It is cold and needs to be reheated, which further increases the energy consumption of the fresh air treatment of the air conditioner

However, the use of single-stage rotor drying and dehumidification will not cause the fresh air to be overcooled, but it is usually difficult to achieve the required dehumidification capacity, or the required regeneration temperature is very high, which greatly increases the energy consumption of regeneration

[0004] In summary, the existing technology has the following deficiencies: 1. The conventional single-stage dehumidification and regeneration temperature is high, and it is difficult to meet the regeneration temperature requirements of other low-grade energy sources such as solar energy and waste heat, and it is necessary to use high-grade energy such as electric energy to complete heating regeneration, high energy consumption

2. The dehumidification capacity of the single-stage runner is limited, and it is difficult to meet the requirements of fresh air dehumidification capacity for independent control of temperature and humidity in hot and humid areas

3. Condensation dehumidification has the disadvantages of low refrigeration efficiency, overcooled air supply, and high energy consumption

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