Method for determining dynamic change rule of dew point temperature of attached layer of radiant ceiling

A dew point temperature, dynamic change technology, used in special data processing applications, instruments, electrical digital data processing and other directions, can solve problems such as the inability to effectively prevent condensation and the decline in cooling capacity of radiant panels

Inactive Publication Date: 2016-03-16
TIANJIN UNIV OF COMMERCE
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  • Claims
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Problems solved by technology

In the actual anti-condensation control, the safe temperature difference is generally fixed. When the indoor humidity load suddenly increases, it will cause the following unfavorable results: First, the occurrence of condensation cannot be effectively prevented; ) leading to a decline in the cooling capacity of the radiant panel

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  • Method for determining dynamic change rule of dew point temperature of attached layer of radiant ceiling

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Embodiment Construction

[0025] The present invention will be further described below.

[0026] 1) Determine the influencing factors of the dynamic change law of the dew point temperature of the attached layer

[0027] At present, there are few studies on moisture diffusion in the field of HVAC, and moist air can be approximately regarded as an ideal gas, and the transport equation of its propagation is the same as that of passive gas pollutants. The mathematical description is also similar, so the factors that affect the diffusion of passive gas pollutants can be used for reference to indirectly determine the factors that affect the diffusion of humid air, and then study the influence of different influencing factors on the dynamic change law of the dew point temperature of the attached layer.

[0028] There are three accessibility degrees (that is, three influencing factors) that affect moisture diffusion, namely, the accessibility of supply air, the accessibility of initial conditions, and the acce...

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Abstract

The invention discloses a method for determining a dynamic change rule of dew point temperature of an attached layer of a radiant ceiling. The method comprises the following specific steps of: firstly, determining influence factors of the dynamic change rule of the dew point temperature of the attached layer; and secondly, performing simulation by utilizing ANSYSY software to obtain sample data, and then based on SAS software, obtaining the dynamic change rule of the dew point temperature of the attached layer with a multivariate regression analysis method: y=12.78891+0.31639xb+0.19712xc-0.12698xd, wherein y is the dew point temperature of the attached layer, b is wet dissipation strength, c is a relative distance between a fresh air inlet and a test point of the attached layer, and d is a relative distance between a wet source and the test point of the attached layer. According to the method, an indoor wet diffusion model is constructed, an interaction relationship among a water supply parameter of a radiant plate, an indoor thermal and humid environment parameter and the dew point temperature of the attached layer is deeply researched, and the dynamic change rule of the dew point temperature of the attached layer is proposed with a statistic analysis method.

Description

technical field [0001] The invention relates to the technical field of radiation cooling, and more specifically relates to a method for determining the dynamic change law of the dew point temperature of a radiation ceiling attachment layer. Background technique [0002] Radiation cooling refers to the technology of reducing the temperature of one or more inner surfaces in the enclosure structure to form a cold radiation surface, and relying on the radiation heat exchange between it and the surface of the human body, furniture and other enclosure structures to cool down. Radiant cooling technology realizes independent control of temperature and humidity, and solves the problem of energy waste caused by coupled control of temperature and humidity. When radiant panels are used for cooling, a uniform temperature field will be formed in the room, and there will be no sense of blowing. The design temperature of the room can be increased by 1-2°C on the premise of ensuring that the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
CPCG16Z99/00
Inventor 金梧凤何军炜张宁刘新明
Owner TIANJIN UNIV OF COMMERCE
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