Etude d’une maison solaire active avec stockage en dalles au Tessin

Pahud, Daniel and Travaglini, Giorgio (2000) Etude d’une maison solaire active avec stockage en dalles au Tessin. Project Report. UNSPECIFIED.

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A single family house is planned in Tenero, Ticino, with the objective of integrating renewable energies in the heating design. The thermal needs of the house are reduced to the Minergie standard, so that the house can be heated by its “activated” concrete plates. An “active plate” is a concrete plate in which pipes have been fixed for the circulation of a heat carrier fluid. It is a heat emitter with a very large heat capacity, which is used as heat storage for a solar heating system. Such a solution is studied using numerical solutions. The dynamic TRNSYS simulation programme is used to build up a thermal calculation tool. It simulates the house, the concrete active plates and the solar heating system together. The dynamic simulations are used to confirm the technical feasibility of the studied concept, to establish the thermal performances of the solar heating system and the house, and to compare various variants involving an unglazed solar absorber, a larger active concrete plate area and the influence of passive solar gains on the solar heating system. Three variants are studied to reduce the energy index of the house. The additional costs associated with each measure (improved house envelope, heat recovery with controlled ventilation, solar hot water, solar heating and increased window area) are estimated. The energy cost associated with each measure is assessed, as well as the effective annual additional cost, which also takes into account the increase in price of the auxiliary heat.

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