The Experts below are selected from a list of 115851 Experts worldwide ranked by ideXlab platform
A K Aremu - One of the best experts on this subject based on the ideXlab platform.
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computational and experimental study of solar thermal energy store for Low Temperature Application
Journal of energy storage, 2018Co-Authors: B O Adetifa, A K AremuAbstract:Abstract This paper evaluates solar thermal energy storage (STES) systems for a Low-Temperature Application. The STES used in this study was an annular cavity storage unit filled with heat storage material. Two latent heat storage materials (benzoic acid and stearic acid), and one sensible heat storage material (palm olein) were selected for this study. Transient thermal analysis was carried out on the STES models using ANSYS 16.0. The performances of the STES systems were evaluated by installing them in solar cookers to heat water. The heating power, sensible heat efficiency (SHE), the amount of energy and exergy stored were estimated. The Temperature distribution, total heat flux and directional heat flux of the STES systems were observed to be affected by the type of heat storage materials used. The heating power, the energy stored and exergy stored reduced, while the SHE increased with an increase in the amount of water heated. In the absence of solar radiation, the STES systems sustained the Temperature of 1 and 1.5 kg of water above 60 and 50 °C respectively for 200 min; this shows the suitability of the annular cavity storage unit for Low-Temperature Applications.
B O Adetifa - One of the best experts on this subject based on the ideXlab platform.
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computational and experimental study of solar thermal energy store for Low Temperature Application
Journal of energy storage, 2018Co-Authors: B O Adetifa, A K AremuAbstract:Abstract This paper evaluates solar thermal energy storage (STES) systems for a Low-Temperature Application. The STES used in this study was an annular cavity storage unit filled with heat storage material. Two latent heat storage materials (benzoic acid and stearic acid), and one sensible heat storage material (palm olein) were selected for this study. Transient thermal analysis was carried out on the STES models using ANSYS 16.0. The performances of the STES systems were evaluated by installing them in solar cookers to heat water. The heating power, sensible heat efficiency (SHE), the amount of energy and exergy stored were estimated. The Temperature distribution, total heat flux and directional heat flux of the STES systems were observed to be affected by the type of heat storage materials used. The heating power, the energy stored and exergy stored reduced, while the SHE increased with an increase in the amount of water heated. In the absence of solar radiation, the STES systems sustained the Temperature of 1 and 1.5 kg of water above 60 and 50 °C respectively for 200 min; this shows the suitability of the annular cavity storage unit for Low-Temperature Applications.
Harald Druck - One of the best experts on this subject based on the ideXlab platform.
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concepts of long term thermochemical energy storage for solar thermal Applications selected examples
Energy Procedia, 2012Co-Authors: Barbara Mette, Henner Kerskes, Harald DruckAbstract:Abstract Scientific research in the field of long-term thermochemical energy storage for Low Temperature Application (e.g. solar thermal systems) has experienced an enormous development in the last decade. In this context the term “thermochemical energy storage” includes chemical storage (e.g. hydration reaction of a salt) and sorption storage (e.g. adsorption and absorption processes). As a positive outcome of the increased research activities, a wide range of storage materials have been investigated, newly developed and are now being applied in thermochemical energy stores. Furthermore, innovative storage concepts have been developed and tested in laboratory or already pilot scale. In this paper, an overview of research activities carried out at different national and international institutions related to long-term thermochemical energy storage for solar thermal Applications will be given. In addition, research activities in the field of thermochemical energy storage performed at our institution ITW will be presented in detail.
Avadhesh Yadav - One of the best experts on this subject based on the ideXlab platform.
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water desalination system using solar heat a review
Renewable & Sustainable Energy Reviews, 2017Co-Authors: M Chandrashekara, Avadhesh YadavAbstract:Most of the desalination systems are energy intensive, which consume high grade energy like gas, electricity, oil and fossil fuels. These processes lead to carbon footprints, which causes depletion of ozone layer as well as health hazards on mankind. It is also lead to global warming which is the burning topic and becomes threat to life sustainability. The potential of harnessing solar energy is most efficient and effective for heat to heat conversion. The thermal desalination is a Low Temperature Application processes with one time investment for life time water production up to 10 to 15 years. In this paper, various solar thermal desalination methods such as direct and indirect methods have been discussed. The indirect methods are preferable for medium and large scale desalination systems, whereas the direct methods employing the solar stills are more suitable for small scale systems. The performance of the Low cost solar stills can be improved with simple modification by using various locally available materials. These Low cost stills can be easily and economically fabricated for meeting daily need of the fresh drinking water. These Low cost solar stills are sufficient for the small households and communities living in islands, coastal areas. It can also be uses for distillation of brackish water for the population residing near river banks. Such a system also suitable for the fluoride affected area to remove fluoride from the water. The Low cost solar stills are sufficient for removal of arsenic, mercury, cadmium, coliform, virus and bacteria.
Leilei Wang - One of the best experts on this subject based on the ideXlab platform.
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a superhydrophobic solar selective absorber used in a flat plate solar collector
RSC Advances, 2017Co-Authors: Yanqing Zhu, Jifu Shi, Q Huang, Yueyun Fang, Leilei WangAbstract:A new kind of superhydrophobic (SH) solar selective absorber (SSA) used in a Low-Temperature flat plate solar collector is proposed. Getting rid of the glass cover can improve the performance of the flat plate solar collector. SSA with a SH coating can maintain the efficiency in a practical outdoor working environment. The SH coating can be made by a simple Sol–Gel method; the water contact angle of SH SSA can reach up to 157° and the sliding angle is less than 2°. The self-cleaning of SH SSA can be realized by rainwater or natural wind. The solar absorptance of SH SSA is still 89.46% after treating in a neutral salt spray for 48 h, which indicates that SH SSA has good corrosion resistance and is suitable to the outdoor environment. Thermal performance tests show that the flat plat solar collector with SH SSA has excellent thermal performance for Low-Temperature Application.
