Fresh air dehumidifying system control method for low-temperature radiation type air conditioner

Abstract

The invention discloses a fresh air dehumidifying system control method for a low-temperature radiation type air conditioner. The method comprises following steps: a, indoor dry ball temperature Trs and indoor relative humidity phi rs are set; b, indoor real-time dry ball temperature Tri and wet ball temperature Twri are obtained; c, through the indoor real-time dry ball temperature Tri and the wet ball temperature Twri, indoor real-time air absolute moisture content Dwi is calculated; through the indoor dry ball temperature Trs and the indoor relative humidity phi rs, the absolute moisture content Drs of the set indoor wet air state is calculated; d, the difference delta T between the set indoor dry ball temperature Trs and the obtained indoor real-time dry ball temperature Tri is calculated, according to the delta T, the refrigeration amount input into a room is controlled, the difference delta T between the set absolute moisture content Drs of the set indoor wet air state and the indoor real-time air absolute moisture content Dwi is calculated, and according to the delta D, the fresh air humidity input into the room is controlled. The temperature and the humidity are independently controlled, and the problems that an existing product system is complex, the heat exchange efficiency is low, the cost is high, and the capacity of adaptation to different season stations is poor are solved.

Description

technical field [0001] The invention relates to the field of radiation-type air-conditioning systems, in particular to a control method for a fresh air dehumidification system for low-temperature radiation-type air-conditioning. Background technique [0002] The blowing of household air conditioners during the heating process makes people feel cold and uncomfortable. In order to solve this problem, two sets of systems, ordinary household air conditioners and floor heating, have appeared in the market to solve the problem of heating discomfort. In fact, the blowing feeling will make people uncomfortable even when cooling, and the use of radiant air conditioners can better solve the discomfort of traditional air conditioners and improve the comfort of users when using air conditioners. The low temperature represented by the capillary end system Since the radiant air conditioner significantly increases the evaporation temperature of the refrigeration system, the energy efficien...

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Problems solved by technology

[0005] 1. Since the refrigerant goes to the waterway, the waterway goes to the proportional regulating valve (optional), and then to the casing heat exchanger, and then exchanges heat with the input indoor air. Obviously, after several conversions, the heat exchange efficiency is greatly reduced, and the entire system Significant increase in energy consumption and cost, which is not conducive to the promotion of low-temperature radiant air-conditioning systems

[0006] 2. The refrigeration system must not only meet the indoor temperature, but also balance the condensation heat and dehumidification effect of the fresh air dehumidifier. Therefore, the compressor capacity of the refrigeration system will take the maximum of the three requirements, which will lead to a significant increase in the energy consumption of the compressor of the refrigeration system.

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