POTENTIAL AIR-CONDITIONING EMISSIONS REDUCTION USING A SOLAR COOLING-HEATING SYSTEM FOR THE SPANISH HOUSING

摘要

An experimental solar energy facility was designed to meet as much of the space heating demand in a typicalrnSpanish dwelling as possible, whose average area is 80-m~2 and generally are entirely heated in winter.rnHowever, during the summertime most of Spanish homes do not air-condition all the space, but usually thernliving room and an additional room, what accounts for approximately half of the total area. Taking this intornaccount and in order to use the facility during the summer and to protect the collectors against overheating,rnan air-cooled 4.5 kW LiBr/water absorption chiller was fitted to the system to air-condition a 40 m~2 room.rnThis work presents results of the solar cooling system working during summer of 2008. The design wasrnbased on a new type of evacuated flat plate solar collectors that delivered higher efficiency than conventionalrnpanels. The experiments proved that approximately 10 m~2 of solar panels are needed to produce 1 kW ofrncooling with an air-cooled LiBr/H_2O absorption chiller. The solar fraction obtained was 92 %. Finally,rnalthough the solar cooling system considered uses almost as much as electricity as a conventional coolingrnplant, the savings in equivalent CO_2 emissions afforded by this facility resulted to be lower. These resultsrnwere extrapolated to all the Spanish households calculating the potential emissions reduction.