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

Abstract

The invention discloses a method and a related device for controlling radiation fresh-air conditioning systems. The method includes acquiring outdoor environmental temperatures; enabling fresh-air dehumidifiers to run according to the lowermost air grades under the control if the outdoor environmental temperatures reach first reference values, or acquiring air outlet dew-point temperatures of the fresh-air dehumidifiers if the outdoor environmental temperatures do not reach first reference values; enabling the fresh-air dehumidifiers to continue running according to current grades under the control if the air outlet dew-point temperatures reach second reference values but do not reach third reference values; lowering the air grades by a first preset number if the air outlet dew-point temperatures reach the third reference values, and then enabling the fresh-air dehumidifiers to run under the control; turning off heat pump water machines under the control when the air outlet dew-point temperatures reach fourth reference values. According to the technical scheme, the method and the related device have the advantages that turning-off frequencies of the heat pump water machines and water valves can be effectively reduced on the basis that condensation generated on the surfaces of radiation tail ends is effectively prevented, accordingly, the radiation fresh-air conditioning systems have sufficient refrigerating capacity, and the comfort can be improved for people in rooms.

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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