Open AccessModelling of Shaded and Unshaded Shallow-Ground Heat Pump System for a Residential Building Block in a Mediterranean Climate
Author(s) -
Michele Bottarelli,
Charles Yousif
Publication year - 2017
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/796/1/012017
Subject(s) - clearance , geothermal gradient , basement , environmental science , block (permutation group theory) , mediterranean climate , heat pump , geothermal heating , geology , geothermal energy , civil engineering , engineering , geography , geophysics , mechanical engineering , geometry , mathematics , heat exchanger , medicine , archaeology , urology
Heat pumps may be coupled to shallow-ground geothermal fields and used for the purpose of space heating and cooling of buildings. However, quite often it is not possible to\udlocate the geothermal field in cleared grounds, especially in cities where building density is high and land has a high premium. This leads to the possibility of burying the geothermal field under the basement of new building blocks, before construction of the building. In the present work, the shaded-unshaded arrangement is numerically studied by coupling the\udsoftware DesignBuilder-EnergyPlus to assess the building’s energy requirement with the software FEFLOW to solve the heat transfer equation in porous media. Assuming a standard\udresidential building block, the coupling between the two software is performed by assigning the thermal energy requirement for air conditioning, as calculated by EnergyPlus, to a flatpanel typology of ground heat exchanger simplified in a 2D FEFLOW’s domain. The results show that it is necessary to opt for a dual-source heat pump (air/geothermal) system\udto ensure that the ground is not frozen or over-heated at peak times and to improve the overall performance of the system