Deep dehumidification energy-saving fresh air unit

Abstract

The invention discloses a deep dehumidification energy-saving fresh air unit. The unit consists of a fresh air duct and a return air duct, a fresh air inlet and an air supply port are arranged on thefresh air duct, a fresh air fan is arranged in the fresh air duct between the fresh air inlet and the air supply port, a return air inlet and an exhaust port are arranged on the return air duct, the return air duct between the return air inlet and the exhaust port is provided with a return air fan, a first direct expansion system, a second direct expansion system and a third direct expansion system are cooperatively arranged in the fresh air duct and the return air duct. The first direct expansion system comprises a first evaporator, the second direct expansion system comprises a second evaporator, and the third direct expansion system comprises a third evaporator and a third condenser, wherein the first evaporator, the second evaporator, the third evaporator, and the third condenser are sequentially disposed in the fresh air duct. The invention fully utilizes the ground source water, the return air energy and the reheat energy, and simultaneously the first evaporator replaces the water meter cooler, the secondary heat transfer energy loss is reduced, and the whole energy saving effect is obvious. At the same time, the invention is suitable for winter working condition and can heatfresh air.

Description

technical field [0001] The invention relates to the field of air conditioning systems, in particular to a deep dehumidification and energy-saving fresh air unit. Background technique [0002] With the improvement of people's quality of life, there is more and more demand for fresh air. At the same time, due to environmental pollution, the requirements for its quality treatment are also getting higher and higher; coupled with the growing energy crisis; forcing technicians to continue to meet people's needs In addition to the demand for high-quality fresh air, more attention is paid to the development of energy-saving products. [0003] At present, the deep dehumidification fresh air unit has just emerged, and a unified standard has not yet been formed. The main reason is that the fresh air bears all the indoor humidity load and part of the sensible heat load. The realization of refrigerated dehumidification is mainly based on the cooperation of the surface cooling heat exchan...

AI Technical Summary

Problems solved by technology

In order to save energy as much as possible, the direct expansion system generally utilizes existing resources, but due to the limitation of existing resources, the capacity of the direct expansion system is limited. Keep the configuration of the direct expansion system unchanged and reduce the water supply temperature of the surface cooling heat exchanger

Due to the different site conditions, the configuration of the unit is changeable and difficult to finalize

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