**4. Performance calculation and proving test of the opaque house**

In the previous section, a performance analysis on "South-North model" and "East-West model" of an opaque house was carried out by applying numerals of the database of S. R. incidence and based on the performance factor of volumetric solar heat collected QVC, the results were discussed and compared each other. In this section, adopting the actual measurements of S. R. incidence at the proving test site, the performance analyses were carried out according to a normal calculation method as following, and then the results obtained were compared with the proving test (Baba, H., et al., 2008).
