Energy piles operate as ground coupled heat exchangers and represent an effective solution to increase energy efficiency of heat pumps. The authors propose a numerical procedure to define a correlation among a number of parameters, taken into account for the design and operation of energy piles systems. The procedure is based on the finite element numerical modeling approach and on the Response Surfaces Method (RSM) and Radial Basis Functions (RBF). The numerical model is able to simulate the three-dimensional heat transfer of energy piles and the surrounding ground, and the one-dimensional heat and fluid flow in the probe. The RSM-RBF allow to define a correlation among the main parameters, on the basis of the numerical results obtained by the numerical simulations. The use of the proposed procedure allows to estimate instantaneously the performance of energy piles for all the possible combinations of design/operating parameters.
Energy piles: A new procedure for effective numerical prediction of thermal performance
Marotta, Pasquale;Massarotti, Nicola;Mauro, Alessandro
2016-01-01
Abstract
Energy piles operate as ground coupled heat exchangers and represent an effective solution to increase energy efficiency of heat pumps. The authors propose a numerical procedure to define a correlation among a number of parameters, taken into account for the design and operation of energy piles systems. The procedure is based on the finite element numerical modeling approach and on the Response Surfaces Method (RSM) and Radial Basis Functions (RBF). The numerical model is able to simulate the three-dimensional heat transfer of energy piles and the surrounding ground, and the one-dimensional heat and fluid flow in the probe. The RSM-RBF allow to define a correlation among the main parameters, on the basis of the numerical results obtained by the numerical simulations. The use of the proposed procedure allows to estimate instantaneously the performance of energy piles for all the possible combinations of design/operating parameters.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.