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

A technology of surface temperature and radiation cooling, applied in heating and ventilation control systems, heating and ventilation safety systems, air conditioning systems, etc., to achieve real-time control, prevent condensation, and high accuracy

Inactive Publication Date: 2017-03-15
TIANJIN UNIV OF COMMERCE
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  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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

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Embodiment Construction

[0021] Below, the substantive features and advantages of the present invention will be further described in conjunction with examples, but the present invention is not limited to the listed examples.

[0022] see figure 1 As shown, the radiant cooling system of the present invention includes a radiant plate, a plate heat exchanger 4 connected to the circulating water circuit of the radiant plate, wherein the water inlet of the plate heat exchanger 4 is connected to a water outlet of the water distributor, The other water outlet of the water separator is connected to the water inlet of the fresh air unit, and the water outlet of the chiller is connected to the water inlet of the water separator. The water separator transfers the water of the chiller to the plate heat exchanger and the fresh air unit for heat exchange; the plate heat exchanger Heater 4 and the water return port of the fresh air unit are respectively connected to the two return water inlets of the water collector...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F5/00F24F11/00
CPCF24F5/0089F24F11/30F24F11/62F24F11/64F24F2110/00F24F2110/10F24F2140/20
Inventor 金梧凤于斌贾利芝高攀刘硕袁小勇刘新明
Owner TIANJIN UNIV OF COMMERCE
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