A review of the design aspects of ground heat exchangers

Lazaros Aresti, Paul Christodoulides and Georgios Florides

Renewable and Sustainable Energy Reviews, 2018, vol. 92, issue C, 757-773

Abstract: The advancement of technology and renewable energy systems (RES) have evolved considerably through the years. Geothermal energy was first introduced in Italy in 1904 and has ever since dramatically increased in efficiency. One of the main types of RES, Ground Source Heat Pumps (GSHPs), are used for heating and cooling a space when coupled with Ground Heat Exchangers (GHEs). GSHPs extract or reject heat to the Earth via a network of tubes. The closed loop system, either vertical or horizontal, is the most common of the configurations. Alternatively, pipes can run all the way down to utilize natural underground water sources, when present, in an open loop configuration. GHEs have significantly higher performance over conventional air-to-air heat exchanger systems and the reduction of their cost and the improvement of their overall efficiency through their design are crucial in research.

Keywords: Ground Heat Exchanger; Energy piles; Geothermal investigation; Thermal response test; Line-source model; Cylindrical-source model (search for similar items in EconPapers)
Date: 2018
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Citations: View citations in EconPapers (27)

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DOI: 10.1016/j.rser.2018.04.053

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