Building window and door shading coefficient testing device

A test device and technology for building doors and windows, which is applied in the field of testing the shading coefficient of building doors and windows, can solve the problems that the simulation calculation results cannot be verified or not solved

Inactive Publication Date: 2014-11-26
CHINA ACAD OF BUILDING RES
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Problems solved by technology

[0003] In the case that the calculation method has already appeared, the standard experimental method is still not solved, and the results of the simulation calculation cannot be verified. Therefore, it is necessary to establish the experimental method as soon as possible, and it is necessary to design a test device for the shading coefficient of building doors and windows

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Embodiment Construction

[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0021] Experimental methods have been studied abroad for a long time, and there are mainly two schools. One is the equipment using sunlight used in the 1960s and 1970s, and the other is the equipment for indoor artificial light source devices used in the 1990s. However, the standard measurement method is always in the experimental state, and it has not yet been established which method to use as a unified standard. On the other hand, the United States adopts ASHRAE STANDARD 142 to measure the overall sunlight characteristics of external windows, and it is fully adopted by ISO 15099. The representative software WINDOW and WIS in Europe and the United States also construct corresponding calculation rules based on the content of ISO 15099. Japan is also trying to improve the boundary element method calculation program TB2D / BEM to measure the sunshine character...

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Abstract

The invention relates to a building window and door shading coefficient testing device. The building window and door shading coefficient testing device comprises a solar power simulator for simulating sunlight, an external environment box for simulating outdoor environment parameters of a building, a test part frame for fixing a part to be tested, a heat metering box for measuring solar energy penetrating through the tested part, and an internal environment box for simulating indoor environment parameters of the building, which are sequentially arranged on a straight line, wherein the heat metering box adopts water to cool and meter heat; and temperature-sensing elements are arranged in the internal environment box, the metering box and the external environment box. According to the building window and door shading coefficient testing device, the large-area reflective solar energy simulator utilizes four xenon lamps as a light source and can focus solar energy on an optical integral mirror through twice reflection, so that radiation with radiation area of more than 2.25m<2>, irradiance up to 500W/m<2>, uniform distribution and an incident angle within 10 degrees can be achieved on a test part mounting plane, and a natural light source can be really simulated.

Description

technical field [0001] The invention belongs to the technical field of testing the shading coefficient of building doors and windows, and in particular relates to a testing device for the shading coefficient of building doors and windows. Background technique [0002] At present, the shading coefficient mentioned in the energy-saving design standards is generally obtained through calculation in China. One method is calculated according to GB / T 2680-94. This method first detects the spectral data of the center point of the single glass, and then calculates it according to the corresponding formula. It does not consider the influence of window frames and sash, etc. Compared with the actual The error is relatively large; another method is calculated by software simulation according to JGJ / T 151-2008. This method also adopts European and American calculation standards and rules, and calculates the shading coefficient of the glass part according to the measured spectral data of a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/20
Inventor 王洪涛万成龙崔笑男刘会华
Owner CHINA ACAD OF BUILDING RES
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