An-Najah Staff

Abstract Conventional energy resources are environmentally harmful unlike renewable energy resources. At the end of the last century the world came together to address the problems of climate change; which led to the thinking of ways to conserve energy and reduce the emissions. The Geothermal energy is one of the most important ways to conserve energy. The main objectives of this research study are: To design and built Horizontal loop Ground Source Heat pump, to obtain a comparison between ordinary heat pump and geothermal heat pump, to find the effect of the heat sink temperature on the performance of the heat pump, and to find the effect of adding a solar water heater to the system in the heating mode on the performance of the system. For this purpose a full design was conducted for the ground horizontal loop heat pump, the system was build and tested for heating and cooling modes before and after the heat pump was connected to the ground. The same test was held after connection to a solar water heater. The COP found to be around 5 to 6 for cooling, for heating the COP was found to be between 3.5 and 4. And for solar water heater it was 7 for a temperature difference of 5°C and more. The payback period for the economical feasibility study of the geothermal heat pump compared to conventional systems was 2 months if the comparison was between installing GSHP not a Diesel Boiler system, 6 months if the comparison was between installing GSHP or LPG boiler system, 15 months if the comparison was between installing GSHP or conventional heat pump. And the reduction in the emissions as calculated for a home load of 35 kW if heated with diesel and if heated with GSHP was 307 tons of CO2 though the 25 years life cycle which would need 12320 trees more.