Aydın, Murat; Sisman, Altug - In: Applied Energy 145 (2015) C, pp. 163-171
In ground source heat pump (GSHP) applications, borehole drilling cost constitutes an important part of the investment … cost and it can be reduced by improving borehole performance. In vertical GSHP applications, usually double-U tube … configurations are used to improve the heat transfer rate per unit length of a borehole, (unit HTR value). To determine the optimal …