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Experimental Work on the Effect of Saline Water Medium on the Performance of Solar Still with Tracked Parabolic Trough Collector (TPTC)
摘要： An experimental work is presented to study the effect of the saline water medium on the performance of double acting solar still combined with tracked parabolic trough collector (TPTC). Three saline water mediums are considered in the basin: pure saline water, steel wire mesh, and sand saturated with saline water. The effect of these mediums on the freshwater productivity of modified solar still (solar still with TPTC) and the conventional solar still was studied. The study was carried out during cold climate (winter) and hot climate (summer) times. Additionally, a comparison of the performance of the desalination system at different saline water mediums between winter and summer was conducted. Moreover, a cost analysis of the system was presented. The findings reveal that using wire mesh and sand raises the daily yield freshwater by about 3.1% and 13.7% respectively in winter and about 3.4% and 14.1% respectively in summer for the modified system. Furthermore, using wire mesh and sand with saline water of the modified system enhance the system efficiency by 3.3% and 15.3% respectively in summer and 3.9% and 13.8% respectively in winter. The cost of the accumulated liter of freshwater is reduced by using sand and wire mesh.
关键词： Freshwater Productivity,Solar Still,Sand,Wire Mesh,Tracked Parabolic Trough Collector (TPTC)
更新于2025-09-23 15:21:21
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Experimental and theoretical analysis of hybrid concentrated photovoltaic/thermal system using parabolic trough collector
摘要： In the current work, a hybrid concentrated photovoltaic thermal system was designed and coupled with a parabolic trough collector and investigated theoretically and experimentally for combined heat and power output. In the design, a photovoltaic module was mounted on a flat surface of parabolic trough absorber tube having semi cylindrical shape. A provision was made to cool photovoltaic panel from both the surfaces by flowing water through the absorber tube as well as the annulus of between absorber tube and glass cover. The model was developed using first law of the thermodynamics and then validated using experimental data generated through the fabricated setup. During the experimentation, the annulus flow rate was varied from 0.008 kg/s, 0.017 kg/s and 0.025 kg/s and inner flow rate was varied from 0.075 kg/s, 0.083 kg/s and 0.091 kg/s. The field testing results showed the mean overall efficiency of system obtained as 61.42%, 64.61% and 66.36% for inner tube flow rate of 0.075 kg/s, 0.083 kg/s and 0.091 kg/s respectively for annulus flow rate of 0.008 kg/s. The theoretical results of hybrid system obtained from the simulation are in good agreement with the experimental data. In the end environmental cost analysis was also carried out for the proposed system.
关键词： Hybrid system,Concentrated Photovoltaic/thermal,Parabolic trough collector,Renewable energy,Solar energy
更新于2025-09-23 15:19:57
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[IEEE 2018 International conference on Computing, Electronic and Electrical Engineering (ICE Cube) - Quetta, Pakistan (2018.11.12-2018.11.13)] 2018 International Conference on Computing, Electronic and Electrical Engineering (ICE Cube) - An Experimental Study of Modelling and Fabrication of an Autonomous Solar Parabolic Trough Collector
摘要： this paper is related with an experimental study of modelling and fabrication of an autonomous solar parabolic trough collector. Parabolic Trough Collectors do not pollute the environment and hence can be marked as Green Technology. In this paper, a prototype of PTC is optically designed, fabricated, tested and controlled with an autonomous solar tracking system. The system is easy to install, modular and operate and maintain its primary functions under the given parameters in order to widespread and diffuse the use of solar energy. The fabricated PTC and its tracking system were tested under an open sky under hot and humid climatic conditions. The experimentation results were compared with the initial mathematical modelling and it contained significant variations due to several factors. The overall aim of the work reported in this paper was to test the performance of a solar parabolic trough collector system by raising the temperature of the working fluid above the boiling point of water and to enhance the efficiency also by reducing the cost of the heat produced.
关键词： mathematical modelling,Parabolic Trough Collector,design,solar tracking
更新于2025-09-19 17:15:36
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Performance Improvement of Trough Concentrating Photovoltaic Thermal System: A Review
摘要： This paper presents an overview on the performance improvement of trough concentrating photovoltaic thermal system by optimizing different components and operating parameters of the system and has been put forwarded. Initially, the performance of four types of solar cell arrays was studied, in that triple junction GaAs cells possessed good performance characteristics. Subsequently the importance of increasing the concentrator reflectivity for improving the performance of TCPV/T system is presented by increasing the mirror reflectivity from 0.69 to 0.92 and consequently the maximum power of the cell array got increased. Then, the role of receiver shape like rectangle and triangle for the maximum utilization of solar radiation is also presented.
关键词： Concentrator reflectivity,GaAs,PV cells,trough collector,Heat transfer
更新于2025-09-12 10:27:22
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[IEEE 2017 International Renewable and Sustainable Energy Conference (IRSEC) - Tangier (2017.12.4-2017.12.7)] 2017 International Renewable and Sustainable Energy Conference (IRSEC) - Modeling the Solar Station with the Parabolic Trough Collector Receiver
摘要： In this paper, we present a detailed mathematic model of the Parabolic Trough Collector (PTC) receiver, which has been theoretically studied. The PTC receiver contains a circular tube absorber with a suitable selective layer, surrounded by a glass cover locate along the focal line of PTC receiver. We have established a mathematical model to control the fluid temperature as well as the absorber and the glass cover temperatures.
关键词： heat transfer fluid,solar energy,solar flux,outlet temperatures,Parabolic Trough Collector Receiver
更新于2025-09-10 09:29:36
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Alternative designs of parabolic trough solar collectors
摘要： Parabolic trough collector (PTC) is the most established solar concentrating technology worldwide. The conventional parabolic trough collectors are used in various applications of medium and high-temperature levels. However, there are numerous studies which investigate alternative designs. The reasons for examining different PTC configurations regard the thermal efficiency increase, the reduction of the manufacturing cost and the development of more compact designs. The objective of this review paper is to summarize the existing alternative designs of PTC and to suggest the future trends in this area. Optical and thermal modifications are examined, as well as the use of concentrating thermal photovoltaic collectors. The optical modifications include designs with secondary concentrators, stationary concentrators and strategies for achieving uniform heat flux. The thermal modifications regard the use of nanofluids, turbulators and the use of thermally modified receivers with insulation, double-coating and radiation shields. The concentrating thermal photovoltaics are systems with flat or triangular receivers which can operate in low or in medium temperature levels with the proper alternative designs. It has been found that there are many promising choices for designing PTC with higher thermal performance and lower cost. The conclusions of this work can be used as guidelines for future trends in linear parabolic concentrating technologies.
关键词： Nanofluids,Solar energy,Alternative design,Secondary reflector,Parabolic trough collector,Thermal enhancement
更新于2025-09-09 09:28:46