Literature Review on the Calculation of Vertical Ground Heat Exchangers for Geothermal Heat Pump Systems
نویسندگان
چکیده
The calculation of Ground Heat Exchanger (GHE) performance is very important for predicting the performance and estimating the initial cost of geothermal heat pump systems. In North America it is estimated that on average GHE are oversized by about 10% ~ 30%. A vertical Ground Heat Exchanger (VGHE) is most common because of its smaller environmental influence and land field requirement. This paper reviews the current theoretical, analytical and numerical models to calculate heat transfer in a single borehole and borehole field in VGHE systems. The purpose of this paper is to increase the awareness of the different assumptions and methodologies between these calculation methods. Their primary strengths and weaknesses are also presented.
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