Heating and Cooling Systems with Heat Exchanger Piles

Fromentin, Antoine and Pahud, Daniel and Sarlos, Gérard (1998) Heating and Cooling Systems with Heat Exchanger Piles. In: International Conference on Energy and Environment, Shanghai, China.

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A heat exchanger pile is a pile foundation equipped with a channel system, so that a heat carrier fluid can be circulated in order to exchange heat with the surrounding ground. A set of heat exchanger piles, usually coupled with a heat pump, can be used for heating and/or cooling purposes. The advantage of such a system is its ability to use the energy of the environment without too high costs; it is thus in perfect accordance with the philosophy of a sustainable development. A dynamic simulation model based on TRNSYS is developed which shows good concordance with experimental data. A sensitivity is performed with this model, which enlighten the importance of parameters like the thermal ground conductivity and the ground water flow velocity. Some recommendations concerning the design of such a system are finally given.

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