Technology development in the solar absorption air-conditioning systems

Abstract

An environmental control system utilizing solar energy would generally be more costeective if it were used to provide both heating and cooling requirements in the building it serves. Various solar powered heating systems have been tested extensively, but solar powered air-conditioners have received little more than short-term demonstration attention. This paper reviews past eorts in the ®eld of solar powered air-conditioning systems with the absorption pair of lithium bromide and water. A number of attempts have been made by researchers to improve the performance of the solar applied air-conditioning (chiller) subsystems. It is seen that the generator inlet temperature of the chiller is the most important parameter in the design and fabrication of a solar powered air-conditioning system. While collector choice, system design and arrangement are other impacting factors for the system operation. 7

Development of Innovative Heating and Cooling Systems Using Renewable Energy Sources for Non-Residential Buildings

“…Therefore, the heat produced using biomass could be conveniently used for cooling using an absorption machine. The gas, kerosene or electrically driven absorption refrigerators were theoretically and experimentally investigated in the literatures [39][40][41][42][43][44], also for trigeneration applications and they are widely used both with conventional heat sources and thermal solar energy [20,21]. The innovative approach proposed here is the heat production for the absorption from different renewable resources, such as biomass.…”

“…The second prototype system features a chip-wood/pellet boiler coupled with an absorption chiller machine. Many applications of absorption air-conditioning have been investigated, mostly referred to solar energy exploitation rather than biomasses [20,21]. In both cases, roof-top solar photovoltaic plants supply the electric energy.…”

Solution to Avoid Power Crisis in Telangana State by Implanting Non Convectional Energy

“…A hybrid open-cycle vapor absorption and fluid desiccant framework utilizing LiBr for the procedure of assimilation and dehumidification has been simulated and the COP so bought is around 50% bigger than that of traditional vapor absorption (Khalid Ahmed et al, 1997 [7]). Li and Sumathy (2000) [8] checked on solar-powered air-conditioning frameworks with the absorption air of lithium bromide and water. Quite a lot of endeavors have been made by experts to increase the execution of the sun applied airconditioning (chiller) subsystems.…”

An Approach to Equivalent Circuit Modelling of Inverted Organic Solar Cells

“…In the recent years, the scientists have given more eyes to the solar energy to handle the energy shortage issues all over the world [6]. To this point, organic solar cells (OSCs) are one of the promising solutions [7]- [10].…”

“…To this point, organic solar cells (OSCs) are one of the promising solutions [7]- [10]. In OSCs, a phase-separated (BHJ) nanostructure is formed from a blend of fullerene derivative [6,6]-phenyl-C61 butyric acid methyl ester (PC 61 BM) and regioregular poly(3-hexylthiophene) (P 3 HT). As the exciton has only a certain lifetime before it collapses (where the electron recombines with the hole), the characteristic distance between an exciton generation site and a donor/acceptor interface must be on order of 5 -10 nm.…”