Method for determining surface temperature change of radiant panel of radiant cooling system during water supply shutdown

Abstract

The invention relates to a method for determining the surface temperature change of a radiant panel of a radiant cooling system during water supply shutdown. The method comprises steps as follows: influence factors for the surface temperature change of the radiant panel and change ranges of the various factors are determined according to actual running conditions of the radiant cooling air-conditioning system; according to the determined influence factors for the surface temperature change rule of the radiant panel and the determined change ranges of the various factors, surface temperature change conditions of the radiant panel during water supply shutdown under different influence factors are simulated with ANSYS software, and sample data are acquired; and on the basis of SAS software, a prediction model for the surface temperature change of the radiant panel during water supply shutdown is obtained through regression analysis of the sample data with a statistical analysis procedure. With the method, the accuracy of a prediction result obtained through regression analysis is relatively high, a control system is simple, real-time control can be realized, and the method is suitable for application to control of heating systems of residential buildings.

Description

technical field [0001] The invention belongs to the technical field of radiation cooling, and in particular relates to a method for determining the temperature change of a radiation plate surface of a radiation cooling system when water supply is closed. Background technique [0002] Compared with the traditional air-conditioning system, the radiant cooling air-conditioning system has the advantages of good comfort, no blowing sensation, no noise, uniform indoor temperature field distribution, and energy saving. The radiant cooling air-conditioning system realizes the independent control of temperature and humidity, which solves the problem of energy waste caused by the coupling of temperature and humidity. Under the same hot and humid environment, the indoor design temperature can be increased by 1-2°C under the premise of using the radiant cooling air-conditioning system and the same thermal comfort of the human body. At present, the supply water temperature of the radian...

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Problems solved by technology

[0003] Compared with traditional air conditioning system, radiant cooling air conditioning system has a large area of ​​cold radiation surface, so condensation is its biggest problem

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