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Energies 2016, 9(11), 930; doi:10.3390/en9110930

Horizontal Air-Ground Heat Exchanger Performance and Humidity Simulation by Computational Fluid Dynamic Analysis

1
Department of Engineering for Innovation, University of Salento, 73100 Lecce, Italy
2
Energy efficiency and Renewables Unit, Energy, Transport and Climate Institute, Joint Research Centre (JRC)-European Commission, 21027 Ispra, Italy
*
Author to whom correspondence should be addressed.
Academic Editor: Hossam A. Gabbar (Gaber)
Received: 7 June 2016 / Revised: 1 November 2016 / Accepted: 3 November 2016 / Published: 10 November 2016
(This article belongs to the Special Issue Energy Conservation in Infrastructures 2016)
View Full-Text   |   Download PDF [9899 KB, uploaded 10 November 2016]   |  

Abstract

Improving energy efficiency in buildings and promoting renewables are key objectives of European energy policies. Several technological measures are being developed to enhance the energy performance of buildings. Among these, geothermal systems present a huge potential to reduce energy consumption for mechanical ventilation and cooling, but their behavior depending on varying parameters, boundary and climatic conditions is not fully established. In this paper a horizontal air-ground heat exchanger (HAGHE) system is studied by the development of a computational fluid dynamics (CFD) model. Summer and winter conditions representative of the Mediterranean climate are analyzed to evaluate operation and thermal performance differences. A particular focus is given to humidity variations as this parameter has a major impact on indoor air quality and comfort. Results show the benefits that HAGHE systems can provide in reducing energy consumption in all seasons, in summer when free-cooling can be implemented avoiding post air treatment using heat pumps. View Full-Text
Keywords: ground source heat pump; ventilation; computational fluid dynamic (CFD); zero energy building (ZEB); ground heat exchanger; efficiency; humidity; heating; cooling ground source heat pump; ventilation; computational fluid dynamic (CFD); zero energy building (ZEB); ground heat exchanger; efficiency; humidity; heating; cooling
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Congedo, P.M.; Lorusso, C.; De Giorgi, M.G.; Marti, R.; D’Agostino, D. Horizontal Air-Ground Heat Exchanger Performance and Humidity Simulation by Computational Fluid Dynamic Analysis. Energies 2016, 9, 930.

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