Novel low-cost parabolic trough solar collector with TPCT heat pipe and solar tracker: Performance and comparing with commercial flat-plate and evacuated tube solar collectors

Solar Energy ◽  
2020 ◽  
Vol 195 ◽  
pp. 210-222 ◽  
Author(s):  
Hassan Fathabadi
Keyword(s):  
Flat Plate ◽  
Heat Pipe ◽  
Solar Collector ◽  
Low Cost ◽  
Solar Collectors ◽  
Parabolic Trough ◽  
Solar Tracker ◽  
Parabolic Trough Solar Collector ◽  
Evacuated Tube

Parametric Study of a Flat Plate Wick Assisted Heat Pipe Solar Collector

2013 ◽  
Vol 135 (3) ◽  
Author(s):  
Brahim Taoufik ◽  
Mhiri Foued ◽  
Jemni Abdelmajid
Keyword(s):  
Flat Plate ◽  
Heat Pipe ◽  
Solar Collector ◽  
Solar Collectors ◽  
Absorber Plate ◽  
Steady State Condition ◽  
Collector Efficiency ◽  
Evacuated Tube Collectors ◽  
Gap Spacing ◽  
Evacuated Tube

The use of heat pipes in solar collectors offers several advantages regarding flexibility in operation and application, as they are very efficient in transporting heat even under a small temperature difference. Compared with other systems powered by evacuated tube collectors or flat plate solar collectors using a wickless heat pipe, little attention has been paid to a flat plate solar collectors wick assisted heat pipe. In this paper an analytical model based on energy balance equations assuming a steady state condition was developed to evaluate the thermal efficiency of a flat plate wick assisted heat pipe solar collector. Parameters which affect the collector efficiency are identified, such as tube spacing distance, gap spacing between the absorber plate and the glazing cover, and the emissivity of the absorber plate. The results reflect the contribution and significance of each of these parameters to the collector overall heat loss coefficients. Three heat pipe working fluids are examined and results show that acetone performs better than methanol and ethanol.

Testing and Analysis of a Heat-Pipe Solar Collector

1983 ◽  
Vol 105 (4) ◽  
pp. 440-445 ◽  
Author(s):  
J. Ribot ◽  
R. D. McConnell
Keyword(s):  
Heat Pipe ◽  
Solar Collector ◽  
High Efficiency ◽  
Heat Pipes ◽  
Solar Collectors ◽  
Empirical Tests ◽  
Heat Transfer System ◽  
Evacuated Tube ◽  
Glass Heat ◽  
Theoretical Analyses

We developed an integral heat-pipe/evacuated-tube solar collector in which the inner receiver tubes form the evaporator sections of glass heat pipes. This paper describes both theoretical analyses and empirical tests, comparing the performance of the glass heat-pipe solar collector with one of today’s high efficiency evacuated-tube solar collectors. The comparison demonstrates that the performance of the two collectors is effectively identical. The testing and analysis indicate that the glass-wick-type glass heat pipe is an effective heat transfer system for evacuated-tube solar collectors.

Design of Low-Cost Solar Parabolic Through Steam Sterilization

2021 ◽  
Vol 10 (1) ◽  
pp. 50-60
Author(s):  
N. K. Sharma ◽  
Ashok Kumar Mishra ◽  
P. Rajgopal
Keyword(s):  
Heat Pipe ◽  
Low Cost ◽  
Steam Sterilization ◽  
Parabolic Trough ◽  
Theoretical Concepts ◽  
Medical Instruments ◽  
Sterilization Process ◽  
Evacuated Tube ◽  
Sun Light

The objective of this study is to develop a low cost solar parabolic trough that can be used for steam sterilization of medical instruments in small clinics where electricity is scarce and expensive. On the basis of theoretical concepts of parabola and focus-balanced parabola, the assembly of ribs and reflector sheet with evacuated tube and heat pipe has been done. The parabolic trough has been mounted on a trolley so that it can be moved easily according to direction of sun light. The designed solar parabolic trough was integrated with pressure cooker under various setups and experiments were conducted to test whether sterilization is taking place or not. To validate sterilization process, tests were also conducted by placing the infected medical instruments. The solar parabolic trough developed was able to generate and maintain steam at 121 degrees Celsius at pressure 15 psig (101.3 kN/m2) for 15 minutes. The solar parabolic trough developed was effective in sterilizing the medical instruments.

A Theoretical Investigation of a Capillary Heat Pipe Coupled to a Parabolic Trough Solar Collector

2021 ◽  
Author(s):  
Boukhalfa Mohammed ◽  
Mustapha Merzouk ◽  
Nachida Kasbadji Merzouk ◽  
Michel Feidt ◽  
Nicolas Blet
Keyword(s):  
Heat Pipe ◽  
Theoretical Investigation ◽  
Solar Collector ◽  
Parabolic Trough ◽  
Parabolic Trough Solar Collector

scholarly journals Energy and exergy efficiency of heat pipe evacuated tube solar collectors

2016 ◽  
Vol 20 (1) ◽  
pp. 327-335 ◽  
Author(s):  
Farzad Jafarkazemi ◽  
Emad Ahmadifard ◽  
Hossein Abdi
Keyword(s):  
Heat Pipe ◽  
Solar Collector ◽  
Theoretical Method ◽  
Exergy Efficiency ◽  
Inlet Temperature ◽  
Solar Collectors ◽  
Evacuated Tube Solar Collector ◽  
Energy And Exergy ◽  
Water Mass Flow Rate ◽  
Evacuated Tube

In this paper, a heat pipe evacuated tube solar collector has been investigated both theoretically and experimentally. A detailed theoretical method for energy and exergy analysis of the collector is provided. The method is also evaluated by experiments. The results showed a good agreement between the experiment and theory. Using the theoretical model, the effect of different parameters on the collector?s energy and exergy efficiency has been investigated. It is concluded that inlet water temperature, inlet water mass flow rate, the transmittance of tubes and absorptance of the absorber surface have a direct effect on the energy and exergy efficiency of the heat pipe evacuated tube solar collector. Increasing water inlet temperature in heat pipe evacuated solar collectors leads to a decrease in heat transfer rate between the heat pipe?s condenser and water.

scholarly journals Performance Simulation Comparison for Parabolic Trough Solar Collectors in China

2016 ◽  
Vol 2016 ◽  
pp. 1-16 ◽  
Author(s):  
Jinping Wang ◽  
Jun Wang ◽  
Xiaolong Bi ◽  
Xiang Wang
Keyword(s):  
Mathematical Model ◽  
Solar Collector ◽  
Incidence Angle ◽  
Accurate Estimation ◽  
Solar Collectors ◽  
Parabolic Trough ◽  
Optical Efficiency ◽  
Different Seasons ◽  
Shadowing Effect ◽  
Parabolic Trough Solar Collector

Parabolic trough systems are the most used concentrated solar power technology. The operating performance and optical efficiency of the parabolic trough solar collectors (PTCs) are different in different regions and different seasons. To determine the optimum design and operation of the parabolic trough solar collector throughout the year, an accurate estimation of the daily performance is needed. In this study, a mathematical model for the optical efficiency of the parabolic trough solar collector was established and three typical regions of solar thermal utilization in China were selected. The performance characteristics of cosine effect, shadowing effect, end loss effect, and optical efficiency were calculated and simulated during a whole year in these three areas by using the mathematical model. The simulation results show that the optical efficiency of PTCs changes from 0.4 to 0.8 in a whole year. The highest optical efficiency of PTCs is in June and the lowest is in December. The optical efficiency of PTCs is mainly influenced by the solar incidence angle. The model is validated by comparing the test results in parabolic trough power plant, with relative error range of 1% to about 5%.

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