Paul Christodoulides and Georgios Florides and Panayiotis Pouloupatis and Vassilios Messaritis and Lazaros Lazari
Ground Heat Exchanger Modeling Developed for Energy Flows of an Incompressible Fluid
640 - 644
2012
6
3
International Journal of Mechanical and Mechatronics Engineering
https://publications.waset.org/pdf/13387
https://publications.waset.org/vol/63
World Academy of Science, Engineering and Technology
Groundsource heat pumps achieve higher efficiencies
than conventional airsource heat pumps because they exchange heat
with the ground that is cooler in summer and hotter in winter than the
air environment. Earth heat exchangers are essential parts of the
groundsource heat pumps and the accurate prediction of their
performance is of fundamental importance. This paper presents the
development and validation of a numerical model through an
incompressible fluid flow, for the simulation of energy and
temperature changes in and around a Utube borehole heat
exchanger. The FlexPDE software is used to solve the resulting
simultaneous equations that model the heat exchanger. The validated
model (through a comparison with experimental data) is then used to
extract conclusions on how various parameters like the Utube
diameter, the variation of the ground thermal conductivity and
specific heat and the borehole filling material affect the temperature
of the fluid.
Open Science Index 63, 2012