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Abstract: A field of transparent solar thermal façade collectors (TSTC) was installed in a pilot building in Ljubljana, Slovenia. This paper presents the first measurement results from the installation. During the heating season, the transparent façade collectors contribute to the heating of the pilot building, while they provide heat to an adsorption chiller during the cooling season. Despite the different loads and surrounding conditions, the monthly solar gains of both seasons are similar. The heat flux between the collector and the interior as well as the temperatures seem comparable to a conventional solar control façade. [Copyright &y& Elsevier]

Abstract: A solar collector field of 250 m2 is being set up for cooling and adding to the heating of a building of 4000 m2 with mixed use, which includes offices, laboratories, computing and electronics facilities, and a public area. Novel solar thermal collectors will be used, which reach excellent performances, thanks to vacuum-insulation and innovative assembly techniques. This allows the efficient operation of an absorption cooling unit. The thermal concept combines the warm and cold streams and gives priority to solar energy. [Copyright &y& Elsevier]

Abstract: This paper analyzes different control strategies for the thermal storage management in Solar Heating and Cooling systems (SHC) for different Italian climates. This novel thermal storage system consists in a variable volume storage tank system, which includes three separate tanks and a number of mixers and diverters. Such devices are managed through two different control strategies, based on combinations of series/parallel charging and discharging approaches. Thus, it is possible to vary the thermal storage capacity as a function of the combinations of solar radiation availability and user thermal/cooling energy demands. The system allows one to either increase or reduce the number of active tanks when the occurring mismatch between the solar energy supply and the user demand is either high or low, respectively. In addition, the surplus of solar energy is used through a heat exchanger included in the solar loop for the production of Domestic Hot Water (DHW). This novel variable-volume storage system, in all the proposed configurations, is also compared with a constant-volume storage system from the energetic and economic points of view. In addition, in order to determine the set of the synthesis/design variables which maximize the system profitability, a parametric analysis is implemented. A case study developed for an office building located in different Italian climatic areas is also presented. Simulation results show that the analyzed SHC systems system configurations may be profitable for all those cases and weather locations in which a sufficiently high solar fraction is achieved. [Copyright &y& Elsevier]

Abstract: This paper presents a solar field configuration to supply thermal energy to the heating and air conditioning system of a hotel located in Almería (Southern Spain). The solar collector technology selected for the solar field is parabolic trough collector (PTC) technology, in particular a small sized PTC prototype especially designed for industrial process heat and air-conditioning systems. Each PTC collector is 8m long and its aperture length is 1m. The heat transfer fluid in the solar field is pressurized hot water. Considering the space available for the solar collector field just close to the hotel and its thermal energy demand profile, the solar field configuration proposed consists of 8 parallel rows, north-south oriented, composed of 32 PTCs connected in series. With this solar field configuration, 25% of the cooling demand is covered the hottest day of the summer and 76% of the heating demand is covered the coldest day of the winter. [Copyright &y& Elsevier]

Abstract: There is a feasible case study of constructing some buildings free from fossil fuel in Iran. The proposed guideline is replacing of solar energy with different types of energies in a building such as electrical energy for lightening and cooling, energy obtained out of combustion of fuels for heating of building and so on. Regarding the high rate of energy consumption in our country for supplying of required cases of residential buildings, if it is possible to supply this type of energy from among limitless energy sources such as solar energy it is possible to have a considerable economy in fossil fuels. Some of the results of this research are parallel improvement of solar energy with economic development of Iran through real economy in costs and providing new job opportunities. Finally it is resulted that with regard to high rate of primary costs, there will be no more request for benefiting from solar energy, provided that we consider suitable subsidies for applying the solar equipment. [Copyright &y& Elsevier]