Experimental and economic study of a greenhouse thermal control system using aquifer water
作者： V.P. Sethi , S.K. Sharma
DOI: 10.1016/J.ENCONMAN.2006.04.003
关键词: Heat exchanger 、 Environmental engineering 、 Solar energy 、 Greenhouse 、 Aquifer 、 Irrigation 、 Relative humidity 、 Evaporative cooler 、 Geothermal energy
摘要: Abstract Underground aquifer water is used for thermal control (heating as well cooling) of a greenhouse in which chilli and capsicum are grown. Year round performance the designed system experimentally evaluated presented. The utilizes constant temperature available on ground surface at around 24 °C (year round) agricultural field through deep tubewell irrigation purposes heating winter nights cooling summer days. Experimental tested during full conditions. To enhance efficiency to improve relative humidity extreme conditions, simple evaporative process also added within same system. experimental results show that average room air maintained 7–9 °C above ambient 6–7 °C below days besides decreasing daily fluctuations inside greenhouse. Improvement conditions observed. Technoeconomic analysis integrated coupled cavity flow heat exchanger (ACCFHES) conducted based yield crops compared with those without any open condition yields. An economic comparison ACCFHES has been made other existing technologies such earth system, collector, using foggers fan pad
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