Abstract: . . .  concept of the spa. 4. Energy geostructure: a guide for system design, construction and operation An energy geostructure is a structure in contact with the ground that is equipped with pipes to transfer heat for heating or cooling purposes. An energy geostructure is an application that enables use of shallow geothermal energy. The most common type of energy geostructure is energy piles. In figure 4 the metallic reinforcement of a cast-in-place foundation pile equipped with pipes is shown. Figure 4: Pipes fixed on the metallic reinforcement of a cast in place foundation pile 7 The project has as objective . . .
. . .  of 75%, contributes 22%. Direct use of the mountain water from the tunnel provides another 11%. Waste heat from the dehumidification cooling unit can be used to heat the pools and contribute 6%. The remaining 5% are covered by an auxiliary burner used for peak power loads and to raise the hot water temperature from 40 to 60 °C. Geothermal energy from tunnel water contributes globally for more than half of the total thermal energy requirements (55%). Final energy for the technical installations is estimated to 410 MWh/year. Fossil energy used by the auxiliary burner amounts to 18%, whereas the remaining . . .
. . .  progress, deals with the redaction of a guide for the design, construction and operation of heating and cooling systems using energy geostructures. The guide will be published in the series of the SIA documentations. 1 1. Introduction Three research projects are presented in this paper. They all deal with applications that have a low temperature use of geothermal energy. They are : analysis by calibrated numerical system simulation of a heating and cooling system coupled to a large number of vertical borehole heat exchangers; elaboration of an energy concept for a spa with the objective of maximizing . . .
. . .  the spa. 4. Energy geostructure: a guide for system design, construction and operation An energy geostructure is a structure in contact with the ground that is equipped with pipes to transfer heat for heating or cooling purposes. An energy geostructure is an application that enables use of shallow geothermal energy. The most common type of energy geostructure is energy piles. In figure 4 the metallic reinforcement of a cast-in-place foundation pile equipped with pipes is shown. Figure 4: Pipes fixed on the metallic reinforcement of a cast in place foundation pile 7 The project has as objective . . .
. . .  [1] Literatur/Referenzen Kapp Ch. und Morath M. (1999) EWS – Anlage. Produktionsbau Meister + Co AG, Wollerau SZ. Messkampagne für Erdspeicheranlagen. Schlussbericht. Bundesamtes für Energie, Bern, Schweiz. Klein S. A. et al. (2003) TRNSYS. A Transient System Simulation Program. Version 15.3. Solar Energy Laboratory, University of Wisconsin, Madison, USA. Pahud D., Fromentin A. and Hadorn J.-C. (1996) The Superposition Borehole Model for TRNSYS (TRNSBM). User Manual for the November 1996 Version. Internal Report. LASEN - DGC- EPFL, Switzerland. Pahud D. (2003) Optimisation par simulation calée . . .
--3000,5,300,3382,21184