Experimental studies and economic considerations on a living space heated through passive solar gain and through electric power

Abstract

The Trombe wall, of an area AT = 8.8 m, built on the southern facade of a room, heats the accommodation during the transition months, complementary to electric power. The statistical processing of the experimental data led to a global quantitative image of the wall?s behavior during the average day of the months March, April, September, and October 1999. The inner climate parameters are: tint = = 21 ?C, trad = 17.9 ?C, troom= 19.5 ?C, j= 35-70%, E ?80 + 120 lx. The thermal comfort factor is B = -0.325. These values insure a room?s comfort close to the optimal one prescribed by the hygienists. The heliothermal conversion?s efficiency is hT = 10.4%. The proportion of heat supplied by the wall in the entire energy required by the room is hheat = 45.8%. The wall?s specific cost is Pu = 24.9 ? /m. The write-off period of the initial investment is n = 53 years. The development of passive solar architecture in the Euro-region Danube-Cris-Mures-Tisa which includes the town of Timisoara (45? north, 22? east), was proven feasible by the experiments from both the energy and the economical point of view.