Journal ArticleDOI
Energy and exergy analysis in double-pass solar air heater
P. Velmurugan,R. Kalaivanan +1 more
TLDR
In this article, an attempt was made to improve the energy and exergy performance of solar air heater by employing double pass with different absorber surface geometries (roughened, finned, and v-corrugated wire mesh) in the second pass, and also by mounting longitudinal fins in the back side of the absorber plate (first pass).Abstract:
In this study, an attempt is made to improve the energy and exergy performance of solar air heater by employing double pass with different absorber surface geometries (roughened, finned, and v-corrugated wire mesh) in the second pass, and also by mounting longitudinal fins in the back side of the absorber plate (first pass). The effect of varied mass flow rate and solar intensity on temperature rise of air, energy efficiency, exergy gain and pressure drop at steady state condition was determined for different types of solar air heaters utilizing an indoor solar simulator. The temperature rise of air, thermal efficiency and exergy gain depends on mass flow rate, surface geometries of absorber and solar intensity, whereas the pressure drop depends on mass flow rate and surface geometries of absorber.read more
Citations
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Journal ArticleDOI
Light source selection for a solar simulator for thermal applications: A review
TL;DR: In this paper, the light sources available for both low and high-flux solar simulators used for thermal applications are discussed in detail, including argon arc, the metal halide, tungsten halogen lamp, and xenon arc lamps.
Journal ArticleDOI
Performance analysis of solar and solar-infrared dryer of mint and apple slices using energy-exergy methodology
TL;DR: In this paper, double-pass solar air dryer (DPSAD) and infrared assisted double pass solar air drier were designed and tested and the effects of using infrared energy have been experimentally investigated to ensure continuity in climatic conditions where solar energy is insufficient.
Journal ArticleDOI
First and Second Law Evaluation of Multipass Flat-Plate Solar Air Collector and Optimization Using Preference Selection Index Method
TL;DR: In this paper, different flow configurations of multipass flat-plate air collectors are explored and the results of the parametric study show that the triple-pass type has the greatest efficiency, whereas the smallest efficiency is of the single pass type.
Journal ArticleDOI
Analytical predictions of exergoeconomic performance of a solar air heater with surface roughness of metal waste
Nguyen Minh Phu,Nguyen Minh Phu,Hoang Nam Hung,Ngo Thien Tu,Ngo Thien Tu,Nguyen Van Hap,Nguyen Van Hap +6 more
TL;DR: In this paper, the second law and economics of an air collector having artificial roughness of metal waste were analyzed from the perspective of thermal efficiency, effective efficiency, exergetic efficiency and economic-based optimization.
Journal ArticleDOI
A detailed review of various types of solar air heaters performance
TL;DR: In this paper , the authors evaluate previous work on energy and exergy investigations into various forms of solar air heaters, as well as to identify research gaps for future research, which is very essential means for optimal design of solar heaters which leads to efficient utilization of solar energy.
References
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Book
Experimental methods for engineers
TL;DR: In this paper, the authors present basic concepts and analysis of experimental data for basic electrical measurements and sensors, including Displacement and Area Measurements, Pressure Measurement, Flow Measurement and Temperature Measurement.
Journal ArticleDOI
Experimental investigation of thermal performance of a double-flow solar air heater having aluminium cans
TL;DR: In this paper, a device for inserting an absorbing plate made of aluminium cans into the double-pass channel in a flat-plate solar air heater (SAH), which substantially improves the collector efficiency by increasing the fluid velocity and enhancing the heat transfer coefficient between the absorber plate and air.
Journal ArticleDOI
Experimental energy and exergy analysis of a double-flow solar air heater having different obstacles on absorber plates
TL;DR: In this paper, an experimental energy and exergy analysis for a flat plate solar air heater (SAH) with several obstacles and without obstacles is presented. And the results show that the largest irreversibility is occurring at the flat plate (without obstacles) collector in which collector efficiency is smallest.
Journal ArticleDOI
Experimental performance of single and double pass solar air heater with fins and steel wire mesh as absorber
A.P. Omojaro,L. B. Y. Aldabbagh +1 more
TL;DR: In this paper, a single and double pass solar air heater with fins attached and using a steel wire mesh as absorber plate was investigated experimentally, and the effects of air mass flow rate range between 0.012 and 0.038 kg/s on the outlet temperature and thermal efficiency was studied.
Journal ArticleDOI
Thermal performance investigation of double pass-finned plate solar air heater
TL;DR: In this article, the double pass-finned plate solar air heater was investigated theoretically and experimentally under Tanta (latitude, 30° 47'N and longitude, 31°E) prevailing weather conditions.
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Energy and Exergy Analysis of Solar Air Heaters with Varied Geometries
P. Velmurugan,R. Kalaivanan +1 more