E-9 既存住宅の断熱性能診断に関する技術検証(その2) : CFD解析による外気に接する建築部位の総合熱伝達率の測定方法に関する検証

概要

論文の詳細を見る
Improvement in the thermal insulating performance of housing and other buildings is important as part of measures of building energy efficient. In recent years, various high-performance adiabatic materials have been developed. However, the standard is not established to measure the thermal performance of the wall installed with the thermal insulating material accurately. Firstly, this paper describes the method to measure the thermal insulation performance of the wall in residential house. In order to analyze the accuracy of this method, the on-spot testing of wall resistance value was carried out in a room of a typical residential house located in Hokkaido, Japan. In addition, the overall heat transfer coefficient of different wall locations were calculated by using Computational Fluid Dynamics (CFD), and compared with the measurement to validate the correctness of CFD simulation approach. By CFD of various factors - the location of the measuring point, the change of the HVAC system, wall resistance value, or window size - can be investigated easily. The simulation results in this paper show that there is no large variation of the overall heat transfer coefficient according to the different location of the measuring wall. However, if the HVAC convector is installed near the measuring the wall, the wall convection heat transfer coefficient was increased.
社団法人空気調和・衛生工学会の論文
2009-08-18