Abstract:
ABSTRACT
The use of geothermal as one of the important energy alternatives that has
increased interest in facing the excessive use of fossil fuels as a main source
of energy. The excessive use of fossil fuel is the main cause of climate
change in the world as a result of greenhouse gas emissions. One of the
most important applications of geothermal is its use in the heating and air
conditioning sector in residential and commercial buildings, as well as in
the electric power generation sector, especially in depths that reach a
temperature of more than 200 C. In this study, geothermal energy was used
in the application of air conditioning and knew its effectiveness in
reducing electrical energy consumption compared to traditional systems in
the city of Baqubah. A geothermal system was used with a window type
air conditioner of a two tons refrigeration capacity to find out the
contribution of using geothermal energy in reducing the electricity
consumption. The study is a comparison with traditional air conditioning
systems Electricity consumption was calculated for three scenarios: the
geothermal system alone, the traditional air conditioner system (A/C)
alone, and the combined system (the geothermal system and A/C system)
The coefficient of performance factor (COP) and energy efficiency ratio
(EER) were calculated for the three approaches 5.54, 18.9, 1.52, 9.383,
1.87, 9.8 respectively. The results obtained from the study have
demonstrated the possibility of benefiting from geothermal energy in air
conditioning applications in Iraq and reducing electricity consumption by
reducing dependence on traditional air conditioning systems. The
reduction in energy consumption for the summer season was by 12% to
15% for the combined air-conditioning system, while when using the
geothermal system alone in the winter season, the reduction in energy
consumption was by 87%.
Finally, these finding may approve that, the geothermal system can be used
as an auxiliary in summer season to decrease electric energy consumption
by 15%. Moreover, in winter, the geothermal system alone guarantee the
comfort condition most of the season ( 22 C and RH= 60%
