Global energy demand for the future can be met using renewable energy resources, and one of its harvesting tools is the photovoltaic (PV) technology. The combination of solar cell technology and Trombe wall is one of the most important research topics at present. PV-Trombe walls are receiving great attention because of their applications for simultaneous electricity generation and heating. In this article, a review of available literature covers different designs of a PV-Trombe wall system besides its thermal and electrical applications. The review covers in detail the influence of design and operational parameters including the glass cover, use of direct current fan, facade width, air vent, air gap thickness, thermal insulation, packing factor, coverage, heat storage, air mass flow rate, PV cell cooling, southern windows, and tilt angle of solar cell on the performance of PV-Trombe walls. Furthermore, comparison between the PV-Trombe wall system and classical Trombe wall as well as the applicability of this novel system are revealed. This review article is beneficial to engineers and researchers and can provide information for future studies.
In this article, a practical and numerical assessment was accomplished on a rectangular storage collector to be used for household purposes. This design can be utilized as a water reservoir to substitute the classical reservoirs generally utilized in Iraq to achieve two goals are heating and storing water together. The experiment shows that the maximum temperature rise through this collector was about 10.5 °C at 3 p.m. An experiment with a continuous flow of working fluid was also conducted. Experiment results show that the outlet water temperature of 28 °C is reached about 1 p.m. and diminished after this time. Performance results showed that the ratio of sunlit area to storage volume is an important parameter affecting the performance of this design of integrated solar collector. This ratio should be more than 12 to provide a suitable amount of warm water in the winter season. The performance of the rectangular storage collector was, broadly, identical to the performance of the classical solar heaters. The free convection phenomenon in the enclosure of the rectangular collector was investigated by using the Fluent program. There is a good correlation between the Fluent data and the experimental results obtained from the experiments.
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