Control method and related device for radiant fresh air conditioning system

Abstract

The invention discloses a control method and a related device for a radiant fresh air conditioning system. The method comprises the steps: (1) acquiring the outdoor environment temperature, (2) controlling a fresh air dehumidifier to operate at the lowest wind level if the outdoor environment temperature reaches a first reference value, and otherwise, acquiring the evaporation temperature of an evaporator, (3) controlling the fresh air dehumidifier to continue operating at the current wind level if the evaporation temperature reaches a second reference value and does not reach a third reference value, (4) controlling the fresh air dehumidifier to operate after the wind level is reduced by a first preset level number if the evaporation temperature reaches the third reference value, and (5) controlling a heat pump water machine to be shut down if the evaporation temperature reaches a fourth reference value. According to the technical scheme, on the basis of effectively preventing condensate from being formed on the surface of the radiation tail end, the shutdown frequency of the heat pump water machine and the shutdown frequency of a water valve can be effectively reduced; accordingly, cold energy can be sufficiently supplied, and the comfort of people in a room can be improved.

Description

technical field [0001] The invention relates to the field of control technology, in particular to a control method and related devices for a radiant fresh air air conditioning system. Background technique [0002] In recent years, with the rapid economic development, the number of high-end apartments and office buildings in major cities has increased dramatically, resulting in increasingly tight energy supply, in which air-conditioning energy consumption accounts for more than half of the entire building energy consumption. 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 end cannot be lower than the dew point temperature of the indoor air, otherwise condensation will occur, which will affect the building performance and i...

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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