Dynamic analysis of the measurement data of energy-efficient building envelope

The heat flowmeter method is suitable for the measurement of overall heat transfer coefficient of building envelope. The average method is often used for analysis of the data, which is applicable under such cases with much longer test duration and small oscillations in indoor and outdoor temperature. However, for heavy elements submitted to variable indoor and outdoor temperature, the dynamic analysis method should be used in accordance with International Standard (ISO9869). The dynamic analysis method may shorten the test duration without degrading the precision, but which is too complex to be used. The author programs to analyze the data with the dynamic method. This program is also used to analyze the data obtained at night, in the daytime and in the whole day respectively so as to know their effects on real values.