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DOI: 10.1615/ICHMT.2009.CONV.820
page 10

Nabiha Naili
Center of Research and Technology of Energy, BP 95 Hammam Lif 2050, Tunisia

Ramzi Jemli
Center of Research and Technology of Energy, BP 95 Hammam Lif 2050, Tunisia

Abdelhamid Farhat
Laboratoire de Maitrise et des Technologies de l’Energie, Technopole de Borj Cedria, Tunisia

Sassi Ben Nasrallah
Laboratoire d'Études des Systèmes Thermiques et Énergétiques, Ecole Nationale d'Ingénieurs de Monastir, Monastir 5019 Tunisie


Due to limited amount of natural resources exploited for heating, and in order to reduce the environmental impact, people should strive to use renewable energy resources. Ambient low-grade energy may be upgraded by the ground heat exchanger (GHE), which exploits the ground thermal inertia for buildings heating and cooling. In this study, analytical performance and experiments analysis of a horizontal ground heat exchanger have been performed. The analytical study, relates to the dimensioning of the heat exchanger, shows that the heat exchanger characteristics are very important for the determination of heat extracted from ground. The experimental results were obtained during the period 30 November to 10 December 2007, in the heating season of the greenhouses. Measurements show that the ground temperature under a certain depth remains relatively constant. To exploit effectively the heat capacity of the ground, a horizontal heat exchanger system has to be constructed and tested in the Center of Research and Technology of Energy, in Tunisia.

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