Paper Conference

Proceedings of Building Simulation 2021: 17th Conference of IBPSA


Analysis of the thermal performance of a ground water storage cell with helical shaped pipe for ground source heat pumps

Marco Marigo 1, Enrico Prataviera 1, Sara Bordignon 1, Michele Bottarelli 2, Angelo Zarrella 1
1 Department of Industrial Engineering, University of Padova, Italy
2 Architecture Department, University of Ferrara, Italy

Abstract: Ground Source Heat Pumps are promising technologies that can contribute to decarbonize the space heating and cooling in buildings. In this work, a particular ground heat exchanger for residential buildings is studied via numerical models. The system consists of a helical heat exchanger immersed in a water tank (cell) buried into the ground. A sensitivity analysis on the main parameters was carried out investigating the effect on the thermal behaviour. The system was also simulated through a numerical model named CaRM (Capacity Resistance Model), modified for these analyses. Simulation results show that the water volume, the installation depth and the ground thermal conductivity, can improve the thermal behaviour; on the contrary, pipe configuration and tank material do not affect the behaviour of the system.
Keywords: Ground Source Heat Pumps, Borehole heat exchanger, Heat pump, Heat transfer
Pages: 3052 - 3059