An overview of Geothermal heat pumps as energy efficient and environmental friendly systems

  • Ahmad, Bilal (Department of Mechanical Engineering, Myongji University) ;
  • Kim, Dong-Hwan (Department of Mechanical Engineering, Myongji University) ;
  • Bahk, Sae-Mahn (Department of Mechanical Engineering, Myongji University) ;
  • Park, Myung-Kyun (Department of Mechanical Engineering, Myongji University)
  • Published : 2008.06.25

Abstract

The major threats that human being is facing nowadays are the Climate change, depletion of the fossil fuels at a rapid rate and energy costs. A significant portion of world energy consumption is consumed by domestic heating and cooling. And heat pumps, due to their higher utilization efficiencies as compared to conventional heating and cooling systems, offer an attractive solution to this problem. Among the types of heat pumps, the Geothermal heat pump or Ground-source heat pump is a highly efficient, renewable energy technology for space heating and cooling. The Ground-source heat pump uses the Earth as a heat sink in the summer and a heat source in the winter. And the Earth, having a relatively constant temperature, warmer than the air in winter and cooler than the air in summer, offers an excellent heat source in winter and heat sink in summer.. This paper will discuss an overview of the types of heat pumps, its operation, benefits of using geothermal heat pumps, soil characteristics, and overview of some experimental works. Finally it will briefly discuss the opportunity of using these energy efficient systems (EES) in the HVAC market of South Korea.

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