A study on Transmissivity and Reflectivitity Measurement of Insolation Transmissivity Material by 2 Point Correction Method

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Publication year 2011
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Title A study on Transmissivity and Reflectivitity Measurement of Insolation Transmissivity Material by 2 Point Correction Method
Author Tatsuya Yoshino,Akihiko Oyakawa,Takayuki Nakata,Koji SAKAI
Summary In this study, it was proposed the measurement method for insolation transmissivity and insolation reflectivity of transmissivity material based on 2 point correction method. First, it was examined that a method of insolation reflectivity of white, black and gray standard board surface whose performance was known, and this relation among standard boards was confirmed. It was found that the performance value was able to be performance value using this method, which predicted more than approximately 45 degree to incident angle of the sun light. Second, it was performed the integrated insolation reflectivity measurement of transmissivity materials with 3 types of back boards. Using the results of measurements among the 2 back boards, the insolation transmissivity and insolation reflectivity are estimated. And this validity was confirmed. It was found that the performance value using the back board was able to be predicted.