Evaluation of a research prototype for measuring and controlling the thermal resistance of building walls in active mode
Résumé
An in situ measurement device based on an active approach is under development within the scope of the RESBATI Project. The implementation strategy will consist of determining the thermal resistance of several types of solid walls at various scales: _ Reference methods using a guarded hot plate (basic LNE instrument) will serve to characterize this parameter at the material level under laboratory conditions; _ Use of climate-controlled chambers (i.e. REBECCA at the LNE facility), for which environmental conditions and thermal constraints are perfectly controlled and known, will yield the thermal resistance of building walls at the laboratory scale; _ The prototype, based in an active mode, _ The research prototype, is controlled by an in-house low-cost data logger. It is coupled to data processing by inverse methods; _ The guarded hot box at CSTB was also use to make cross characterization of instrumented walls used in the present study. This paper will present the development of a test method to determine heat loss through a wall installed in an energy room by an active method compared to referenced methods.