Control method and related device for radiant fresh air air conditioning system

Abstract

The invention discloses a control method of a radiation fresh air conditioning system and a related device. The method comprises the steps of: obtaining an outdoor environment temperature; controlling a fresh air dehumidifier to operate according to a lowest air gear if the outdoor environment temperature reaches a first reference numerical value, otherwise, obtaining an air outlet dry ball temperature of the fresh air dehumidifier; controlling the fresh air dehumidifier to continuously operate according to the present gear if the air outlet dry ball temperature reaches a second reference numerical value and dose not reach a third reference numerical value; controlling the fresh air dehumidifier to operate after reducing the air gear to a first preset number gear if the air outlet dry ball temperature reaches the third reference numerical value; and controlling a heat pump water machine to be closed if the air outlet dry ball temperature reaches a fourth reference numerical value. The control method can effectively reduce the closing frequency of the heat pump water machine and a water value on the basis of effectively preventing generation of condensation on the radiation terminal surface, so that the refrigerating capacity can be supplied more sufficiently, and the comfort of people in rooms is improved.

Description

Technical field [0001] The invention relates to the field of control technology, in particular to a control method and related devices of a radiant fresh air air conditioning system. Background technique [0002] In recent years, the rapid economic development has led to a sharp increase in the number of mid-to-high-end apartments and office buildings in major cities, resulting in increasingly tight energy supply. Among them, air-conditioning energy consumption accounts for more than half of the energy consumption of the entire building. The radiant air-conditioning system, as an energy-saving air-conditioning system, can be well combined with low energy consumption or green buildings, and has a good application prospect. However, the single radiant cooling system has obvious disadvantages, that is, the surface temperature of the radiant terminal cannot be lower than the indoor air dew point temperature, otherwise condensation will occur, which will affect the building performanc...

AI Technical Summary

Problems solved by technology

In the current technology, the control of the two is relatively independent, and the intelligent linkage control of the two has not been realized. Generally, the start and stop of the heat pump water machine and the switch of the water valve are controlled by detecting the temperature and humidity changes in the room to prevent radiation. Condensation on the surface of the end leads to high frequency of shutting down the heat pump water machine and water valve, and insufficient cooling supply, which in turn affects people's comfort in the room

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