Effect of Corrugated Cover Directional Transmittance on the Thermal Performance of a Solar Collector

1981 ◽  
Vol 103 (2) ◽  
pp. 144-152
Author(s):  
T. F. Smith ◽  
S. Chaidar
Keyword(s):  
Solar Energy ◽  
Periodic Function ◽  
Thermal Performance ◽  
Solar Collector ◽  
Radiative Heat ◽  
Structural Strength ◽  
Heat Losses ◽  
Light Weight ◽  
Fiberglass Composite ◽  
Reduced Costs

The benefits of light weight, structural strength, and reduced costs without significant reduction of transmission of solar energy of a corrugated fiberglass composite cover promise wide utilization of this cover in solar collectors to suppress convective and radiative heat losses from the absorber panel. In order to evaluate the thermal performance of a collector with a corrugated cover, the directional transmittance of the cover must be available. A study was undertaken to develop a model for the directional transmittance of a corrugated cover as represented by a sinusoidal periodic function. As an application of this model, hourly and daily thermal efficiencies of a solar collector with a corrugated cover are presented.

scholarly journals Thermal performance of a porus radial fin with natural convection and radiative heat losses

2015 ◽  
Vol 19 (2) ◽  
pp. 669-678 ◽  
Author(s):  
M.T. Darvishi ◽  
Rama Gorla ◽  
F. Khani ◽  
A. Aziz
Keyword(s):  
Natural Convection ◽  
Thermal Performance ◽  
Radiative Heat ◽  
Heat Losses

A review on performance of nanofluids in various heat pipe solar collector

2021 ◽  
pp. 095440892110670
Author(s):  
N. Jayanthi ◽  
M. Venkatesh ◽  
R. Suresh Kumar ◽  
S. Sekar
Keyword(s):  
Solar Energy ◽  
Heat Pipe ◽  
Thermal Performance ◽  
Solar Collector ◽  
Energy Demand ◽  
Review Paper ◽  
Renewable Energy Sources ◽  
Heat Pipes ◽  
Solar Collectors ◽  
Major Disadvantage

Energy from the Sun brings as Solar energy which is abundantly available and utilized for various applications. Owing to the increase in energy demand, having a limit of non-renewable energy sources, more interest is given to Solar energy. One of the most fundamental applications of using Solar energy is a Solar collector. The efficiency of the Solar collector depends upon the fluids used in the Solar collector and thermal performance also can be enhanced by using heat pipes in the Solar collector. Compared to flat plate solar collectors, the major disadvantage of heat loss can be rectified in heat pipe solar collectors. Still, to improve the performance of heat pipe solar collectors, nanofluids can be used instead of base fluids to improve thermal performance. In this review paper, the application of nanofluid in Solar collectors results in the percentage of improvement in heat transfer by nanofluid at optimum condition is discussed. This paper reviewed widely the recent development and upcoming research that can be done to enhance the working of heat pipe Solar collectors using nanofluids.

scholarly journals ANALISA LAJU PERPINDAHAN PANAS PADA KOLEKTOR SURYA TIPE PELAT DATAR DENGAN ABSORBER PASIR

2011 ◽  
Vol 1 (2) ◽  
Author(s):  
Made Wirawan ◽  
Rudy Sutanto
Keyword(s):  
Heat Transfer ◽  
Solar Energy ◽  
Mass Flow Rate ◽  
Mass Flow ◽  
Flow Rate ◽  
Solar Collector ◽  
Alternative Energy ◽  
Heat Losses ◽  
Clear Sky ◽  
Potential Alternative

Solar energy constitute one of potential alternative energy to develop as a back up of energy. Especially for countries in khatulistiwa location belonging to Indonesia. For use solar energy needful collector that using absorber. Using sand as a absorber make up step for increase value and profit of sand, in a economics manner the price more cheap and easy to obtain than another absorber. The analysis use sand as a alternative absorber for solar collector did for understand rate of heat transfer to acceptanceof water. Dimention of collector are 560 mm x 310 mm with thick of sand absorber 10 mm and 1.2 mm for aluminum plate as a comparator. Observation did begin 10.00 am until 14.00 pm for the two of them in the weather clear sky. The rate of water in this research are 200 cc/min, 250 cc/min and 300 cc/mn for another dan at the same time. The result of analysis be obtained heat absortion by water for solar collector with aluminum absorber more large than sand absorber. The debit of water more and more large in the collector so absorb heat by water more large because incretion the mass flow rate of water (m  ). The heat losses in the solar collector aluminum absorber more than sand absorber.

Enhancement of Thermal Performance of Wickless Heat Pipe Solar Collector with Surfactant Added Nanofluid

2019 ◽  
pp. 397-406 ◽  
Author(s):  
Abhijeet A. Pawar ◽  
Vishwasinha V. Bhosale ◽  
Vishal S. Jagadale
Keyword(s):  
Heat Pipe ◽  
Thermal Performance ◽  
Solar Collector

Parabolic Solar Collector Coverage Made of High-Performance Concrete with Addition of Active Rice Husk Silica Integrated to a Biomass Thermoelectric Unit

2014 ◽  
Vol 634 ◽  
pp. 72-82
Author(s):  
Rosa Ana Conte ◽  
Daltro Garcia Pinatti ◽  
Luiz Fernando M. Marton ◽  
Sebastião Ribeiro ◽  
Thaís Witt Acosta ◽  
...  
Keyword(s):  
Solar Energy ◽  
Rice Husk ◽  
Solar Collector ◽  
High Performance ◽  
High Performance Concrete ◽  
Electrical Energy ◽  
Energy Generation ◽  
Boiler Water ◽  
Rice Husk Silica ◽  
Short Rotation

Production of active rice husk silica (ARHS) in bubbling fluidized bed boiler of a thermoelectric unit (TEU) and its addition to high performance concrete (HPC) with a compression resistance of 90 MPa was developed in the last 10 years. A first factory in Brazil was established at Alegrete town, RS, and other factories are under planning. Data of ARHS production, specification and HPC trace are presented. Design of parabolic solar collector coverage (PSCC) for air heating for biomass drying in a special silo of the TEU is presented as well. Cost of HPC/ARHS is 10 times less than steel (USD 200/ton vs. USD 2000/ton, specific mass 2.5 vs. 7.6 g/cm3, respectively). Those characteristics allow simultaneous solution of four ecological problems: large span coverage, rain water collection, daily solar energy collection and storage, and drying of biomass. The integration of those characteristics results in decrease of biomass consumption maintaining the same UTE efficiency. Tracking parabolic solar collector can be avoided between Cancer and Capricorn Tropics, and it is sufficient its eastern-western orientation with inclination to the Equator by the latitude angle. Coverage of the area occupied by TEU is sufficient to dry its biomass consumption. Preheating of boiler water with solar energy is possible decreasing biomass consumption in sunny days; biomass is partially consummed at night and cloudy days. Coupling the above technologies with high pressure steam TEU and fast-growing short-rotation forest gives to the biomass electrical energy generation a competitive economical position with hydraulic, coal, natural gas, and aeolic energy generation.

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