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Title: Study on optimum inclination angle of solar collecting surface in Hong Kong
Authors: Fung, TYY
Yang, HX 
Keywords: Solar Radiation
Optimum Angle
Solar Panels
BIPV Modules
Power Generation of BIPV Modules
Issue Date: 2005
Publisher: Hong Kong Institution of Engineers
Source: HKIE transactions, 2005, v. 12, no. 1, p. 44-48 How to cite?
Journal: HKIE transactions 
Abstract: The amount of solar radiation reaching a solar collecting surface, either a solar collector or a photovoltaic module is affected by the tilted angle of the surface to the horizontal. There is a common practice that the optimum angle is the same as local latitude. However, there is no detailed study which considers the local weather conditions regarding the optimum angle. To find out the optimum inclination of solar collecting surface for applications in Hong Kong, a simulation model relating available solar radiation and tilted angle of a surface was established. By making use of the simulation model together with Hong Kong annual hourly solar radiation that recorded by the Hong Kong Observatory, the solar radiation received by a tilted surface can be calculated. It was found that a surface should be tilted at 19.4° due south in order to receive maximum solar radiation throughout a year in Hong Kong. This is a remarkable and realistic result because actual weather data have also been considered. The results can be a reference for various kinds of solar applications such as BIPV and solar hot water system etc. A case study of PV application is also given to validate the simulation model.
ISSN: 1023-697X
EISSN: 2326-3733
DOI: 10.1080/1023697X.2005.10667993
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