Thermal modeling of a controlled environment greenhouse cum solar distillation for composite and warm humid climates of India Original Research Article

The present study is concerned with the analysis of solar desalination system combined with a greenhouse for both composite and warm humid climate of India. Analytical expressions for water temperature, greenhouse room air temperature, glass cover temperature, flowing water mass over the glass cover, hourly yield of fresh water and thermal efficiency have been derived in terms of design and climatic parameters for a typical day of summer and winter period. Temperature rise of flowing water mass with respect to distance and time in solar still unit has also been incorporated in the mathematical modeling. The effects of various still and design parameters on its performances have been discussed in detail. The yield of fresh water was found to be higher in warm humid climate than composite climate.