Application of combined Earth to air heat exchanger and solar energy in cooling of poultry houses

To decrease energy consumption, the earth to air heat exchanger (EAHEs) is the appropriate technique for heating and cooling of the buildings and poultry houses. Usually, poultry houses are located in a remote area where there is no electricity, and where there is electricity, it is expensive, so resorting to these solutions is considered important solutions to save electrical energy and provide free cooling. This research studies a numerical the influence of some plan parameters ( the pipe diameter, inside condition, pipe lengths, and exit condition) and the capability of using solar energy to decrease the electricity consumption for air conditioning of poultry houses and on the overall performance of the EAHEs.. The diameter of the EAHE pipe 4 in (0.1016 m), pipe lengths of (355, 370m, 385m, 395m and 410m ) and are studied solar radiation intensity 1000 W/m2 with constant flow rate. This numerical study has been done for winter and summer seasons in Nasiriyah city of southern Iraq. The simulation results showed that the combination of solar energy and EAHE can be used for cooling and heating the poultry houses and the heat released by heat exchanger reduced with increasing the outlet temperature of air and increased with increasing length of pipe of EAHE. While the overall performance factor of EAHEs declined with increase of length of pipe, also the solar energy increased with increasing length of pipe of EAHE.