Optimum inclination of south-facing solar collectors during the cooling season in China

Lin Wenxian

Energy, 1990, vol. 15, issue 1, 63-66

Abstract: Using Hay's anisotropic, diffuse-sky insolation model, we derive a theoretical equation which can be used to estimate the optimum slopes of tilted, south-facing surfaces during the cooling season in the northern hemisphere. The equation yields implicit results and it is difficult to obtain optimum slopes. The major factor affecting the optimum slopes is latitude. With data on solar radiation for 30 of China's major cities, a general correlation is developed by using the linear regression technique. The result is valid anywhere in China during the cooling season and is accurate (with an average absolute error of 0.33 ° and an error range of −0.67 to 0.7 °) and convenient to use in practice.

Date: 1990
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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:15:y:1990:i:1:p:63-66

DOI: 10.1016/0360-5442(90)90064-9

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