solar collector energy Articles
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Thermodynamic and life cycle assessment of flat–plate collector, photovoltaic system and photovoltaic thermal collector
In this study, an energy, exergy and Life Cycle Assessment (LCA) analysis of a Flat–Plate (FP) collector, a Photovoltaic (PV) system and a Photovoltaic–Thermal (PV–T) collector is carried out for better evaluation. It is observed that instantaneous energy, daily energy and exergy efficiency of the FP collector, the PV system and the PV/T collector vary between 53–61%, 19–30%, 23–37% and 56–74%, ...
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Development and performance evaluation of 0.16 m 2 solar point thermal energy collector compared with flat plate collector
Renewable energy systems such as wind, solar and biomass are significantly more land intensive than traditional fossil fuels. Renewable energy increases diversity of energy supplies and can replace diminishing fossil fuel resources over the long run; their use in place of fossil fuels can substantially reduce greenhouse gases and other pollutants. Application of solar energy for domestic and ...
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CO2 mitigation with thermal energy storage
Thermal Energy Storage (TES) provides us with a flexible heating and/or cooling tool to combat global warming through conserving energy while utilising natural renewable energy resources. This paper aims to show how CO2 emissions can be decreased by utilising different TES concepts in Turkey. The first project is for the heating and cooling of a supermarket using Aquifer Thermal Energy Storage ...
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Comparison of thermal performances of flat plate and evacuated tube solar air collector at different flow rates: experimental analysis
The thermal performances of an evacuated tube solar air collector and flat plate solar air collector are experimentally investigated at different flow rates of air. The evacuated tube solar air collector has 40 evacuated tubes and surface area, 4.44 m². This setup consists of a header of square shape. The header has a circular pipe at the centre through which the air flows. The setup contains ...
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Matthew Orosz awarded Echoing Green Fellowship to further off-grid energy work
Newly minted MIT PhD selected for two-year social entrepreneurship fellowship. Written by Nathan Birnbaum.You can read the original new in MIT NewsMatthew Orosz MEng '03, SM '06, PhD '12 had a lot to be proud of on June 7. Not only was he invested with his doctoral hood from the Department of Civil and Environmental Engineering, but he also was named a 2012 Echoing Green Fellow to further the ...
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Exergy analysis of an air solar heater
This paper presents an exergetic analysis of a downward flat plate collector, an unglazed selective absorber collector and an artificial rough surface collector. The analysis is based on mass, energy and exergy balance equations. The results show that for the Reynolds number of Re = 4000, the daily exergy output rate varies inversely with the mass flow rate per unit area, while the exergy ...
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A new type of solar concentrator employing a cone-cylinder combination
Most conventional solar thermal radiation concentrators have some sort of symmetry which allows them to concentrate solar thermal energy for their operation. We report a new system that utilises the symmetry of a cone and a cylinder combination to simulate the concentration of solar radiation on a ring containing a fluid (water). A halogen lamp is used as the source of radiation to simulate solar ...
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Alternative scenarios of the utilisation of renewable energy sources in small prefectures: a case study in Lasithi Prefecture, Greece
The sector of Renewable Energy Sources (RESs) is growing very fast, with many innovations and applications becoming a reality. The continuous reduction of natural resources has forced all policymakers to turn to alternative energy sources. The total energy (oil and electricity consumption) consumed in the prefecture of Lasithi during the years 1997?2002 in correlation with the RES exploitation ...
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Exergy analysis of DSG parabolic trough collectors for the optimal integration with a combined cycle
A comprehensive energy and exergy analysis was conducted for various components of a direct steam generation (DSG) parabolic trough solar collector field under nominal operating conditions to assess performance of the components and to optimally integrate them with a thermal system. The solar field was modelled mathematically to compute thermal loss and consequently the thermodynamic ...
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Evaluation of environmental factors and equipment configuration on efficiency of a solar soil water collector
The aim of this paper is to assess the effects of environmental factors and equipment configuration on the recovery of soil water using a solar collector. The recovery of water from soil is difficult, since the energy requirements are very high. Solar energy provides a solution to this problem, especially in countries with high solar radiation. In the current study, it was found that the amount ...
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Advanced Solar Thermal Technologies for Clean Water
Artic Solar proposes to integrate a high temperature solar thermal collector and a proprietary steam generator to provide the steam and the required energy for a solar thermal distillation or evaporation system. The ability to generate steam on a continuous basis using water for the heat transfer fluid in the collector closed loop increases efficiency and lowers the cost of energy required for ...
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Harnessing the Sun`s Energy for Water and Space Heating
The pace of solar energy development is accelerating as the installation of rooftop solar water heaters takes off. Unlike solar photovoltaic (PV) panels that convert solar radiation into electricity, these "solar thermal collectors" use the sun's energy to heat water, space, or both. China had an estimated 168 million square meters (1.8 billion square feet) of rooftop solar thermal collectors ...
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Solar Heating Solutions for the Brewery, Distillery and Wine Industries
SOLAR THERMAL SOLUTIONS FOR DISTILLING, BREWING, AND WINE INDUSTRIES The growth of craft brewing in the United States has been explosive in recent years. The producers who thrive in this more competitive market will be the ones who can lower production costs while maintaining the high quality responsible for their success. In an era where the American public demands social responsibility from ...
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