Geothermal Heating of Greenhouses in South Algeria

Abstract

In Algeria the average minimum air temperature is mostly lower than during the December-February period the coastal belt regions, while in semi-desertic regions, it under It is obvious from these data that to maintain the minimum air temperature of in the greenhouses we must heat them. Theoretical and experimental studies of the of greenhouse have been achieved. Many experiences of heating greenhouses by means of geot h d water have been designed in the South of Algeria (semi-desertic region). A numerical simulation has led to the determination of heat capacity, delivery rate of geot h d heating water and heat exchange surface. The hourly ambient air and relative humidities inside heated and unheated greenhouses are presented. Precocity of three weeks is obtained, while the total production has increased heated greenhouses.