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Solar passive heating through a thermosyphon air panel
Author(s) -
Sawhney R. L.,
Bansal N. K.,
Sodha M. S.
Publication year - 1988
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.4440120204
Subject(s) - thermosiphon , environmental science , nuclear engineering , materials science , passive solar building design , solar energy , mechanical engineering , engineering , heat exchanger , electrical engineering
Thermosyphon air panels installed on the south wall of a building are being used for solar space heating in the cold desert climates of North India. This paper presents a simulation model to predict the performance of such panels; a numerical evaluation of the performance has been made, using the meteorological data for January (having maximum and minimum temperatures equal to −2·°C and −14·2°C, respectively, and an insolation of 4·58 kWh/m 2 day on the horizontal surface). For typical weather condition in January a 1·62 m 2 thermosyphon air panel is seen to collect about 2·3 kWh of energy per day with a rise of temperature of about 2·5°C to 13·5°C (with room air at 18°C as inlet air) and a working efficiency of approximately 32·5 per cent.