Technology, thermal analysis and economic evaluation of a sunspace located in northern Greece

摘要

This paper discusses the thermal analysis and economic performance of an attached sunspace, used in a conventional dwelling environment. The sunspace is a modified greenhouse with special geometry of glazed inclined roof and inclined glazed walls and is capable to operate only as a completely passive system. New solar radiation and ambient temperature data for the area of northern Greece is presented. The calcualtion of thermal loads using the degree-day method and the annual auxiliary eneryg requirements of the residence are estimated using the unutilizability method (UU method).