期刊名称：Archiwum Fotogrametrii, Kartografii i Teledetekcji
印刷版ISSN：2083-2214
出版年度：2008
卷号：18
语种：English
出版社：Main Board of Association of Polish Surveyors
摘要：According to the new Polish regulations in force as of 1 January 2009,the energy performance certificate will be required on the construction,sale or rent of buildings and dwellings. The certificate should describe the actual energy performance of the building and should provide information regarding,i.a.,thermal resistance of the building shell and air exchange. Calculations based only on a building design - if it exists - may lead to unrealistic results due to changes introduced during construction process,a faulty construction or to insulation ageing. Thermography may be used for quantitative investigation of actual thermal features of a building. To assess the real thermal resistance of the wall,a few vital conditions have to be met. The building examined has to be closed and heated. The indoor air temperature should be significantly higher than the temperature outside. Weather conditions before and during the examination should be stable enough to approximate stationary heat flow through the building shell. Thermal inspection must be done inside the building. It is possible To calculate the total heat loss,it is necessary to know both the wall thermal characteristics (surface temperature distribution or heat transfer coefficient) and the wall area. Thermal images have to be set up into a single temperature distribution map. Computer programmes applied in photogrammetry for projective transformation may be used to draw up the temperature distribution maps. The examples of the actual heat loss assessment for walls of different building systems by means of thermal imaging are presented. The analysis was performed with the ThermaCAM S60 camera and FLIR software. Thermal images of the walls examined revealed not only the presence of structural thermal bridges,but also showed defects due to poor workmanship. Total heat losses were calculated as the sum of the products of the elementary isothermal areas and assigned heat flows. It was shown that the real heat losses through the building outer shell may be even two times higher than the values put forth in the designs.
其他摘要：Prawo budowlane nakáada od 1 stycznia 2009 roku obowiązek certyfikacji energetycznej budynków i mieszkaĔ. Certyfikat winien opisywaü aktualną efektywnoĞü energetyczną budynku. Do iloĞciowego okreĞlenia rzeczywistych wáasnoĞci cieplnych przegród budowlanyc
关键词：thermography;energy performance certificate;housing industry;heat losses;heat transfer
