Research On Test Method Of Windows-Behaviour Between Different Climates

Windows were important part in building enclosure, whose performances relate to living conditions and energy saving. The actual environment of windows contained multiple climatic factors repeatedly acted, and windows performances may be deteriorate or even destroyed. Test method of windows between different climates could effectively detect potential defects of windows, and could provide improvement and guarantee of product quality. Window was the focus of building energy saving, and window frames accounted for 15% to 30% of energy consumption of all of windows. Test method on thermal performance of windows frames could improve the design of cross-section of windows frames, and had great significance to building energy-saving.The theme sourced from scientific and technological item of National"Eleventh Five-Year"plan"The systematic research and development of windows in typical areas". In this paper, test method of windows between different climates and thermal performance of windows frames was established, and design principle and methods of corresponding test equipments were provided. The equipments'performances were calibrated, and current windows were tested, and the results were analyzed.Main results of research on test method of windows between different climates and thermal performance of windows frames were as follows: 1) Test method of windows between different climates was studied and set up. Indoor climate conditions were maintained when outdoor climate conditions were changed in different areas and different seasons. Appearance, leakage, condensation and deformation of specimens were observed and tested, to identify defects of windows. 2) According to test method, design on functions systems of test equipment was carried out. The equipment was composed of temperature and humidity control system, rain system, infrared radiation and indoor environment of space. 3) Founctions of the equipment were calibrated, and the results indicated that the equipment was in line with the requirements of test method and the test could carry out. 4) Tow windows were tested between climates of cold area, and the phenomenons of leakage, glass cracks, condensation emerged, shown that the test method could reflect potential defects of windows and the test method had great signnificance to quality supervision and improvement. 5) Test method on thermal performance of windows frames was designed, and corresponding test equipment was developed and calibrated. Confirmatory tests and comparative tests indicated that the equipment had a high accuracy. 6) Tests and calculations were carried out for two types of windows frames, and results of tests and calculations had a high consistency with high reliability.In this paper, test technology of windows- behaviour between different climates and windows frames'thermal performance is established, which can effectively reflect potential defects on windows and improve the design and thermal performance of windows frames. The test technology have great significance to quality supervision of windows market, and can improve people's living conditions and building energy- saving.