Experimental Study of Double Pass water passage in Evacuated Tube with Parabolic Trough Collector

Bassem, Sarah; Jalil, Jalal M.; Ismael, Samar J.

doi:10.1088/1742-6596/1973/1/012058

Cited by 2 publications

(2 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This approach does not need assistance equipment to heat water in the cold. The doublepass technique increases PTC's thermal performance by increasing the pace at which water exits the evacuated tube and broadening the flow channel [22]. Employing an evacuated tube to prevent heat loss made it feasible to increase thermal efficiency.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Computational Analysis of Aluminum-Coated Dimple and Plain Tubes in Solar Water Heater System

et al. 2022

View full text Add to dashboard Cite

Solar power is often regarded as one of the most promising forms of alternative energy since it is both sustainable and renewable. It is difficult to utilize and benefit from solar energy in residential and industrial applications because of the intermittent nature of its supply. A solar-based water heating system is efficient for using solar thermal conversion, the simplest and most successful method of turning solar energy into thermal energy. In this research, the performance analysis of Parabolic Trough Solar Collectors (PTSCs) with aluminum-coated copper dimple tubes was computationally and experimentally analyzed. For computational analysis, a Computational Fluid Dynamics (CFD) tool was used. For experimental analysis, aluminum-coated dimple tubes were used to pass the base fluid (water) in it while varying the mass flow rate from 1.0 to 3.0 kg/min at steps of 0.5 kg/min to examine the effect of dimple texturing and aluminum coating on the performance of the solar water heater. The parameters, such as thermal efficiency, friction factor, convective heat transfer coefficient, Nusselt number, and effectiveness of the PTSC, were analyzed, and we found remarkable improvement towards high conversion efficiency. At a flow rate of 2.5 kg/min, the thermal efficiency was improved by about 36%, the friction factor increased by about 0.32%, the convective heat transfer coefficient was improved by 1150 W/m2K, Nusselt number was improved by about 53.8 and the effectiveness was enhanced by 0.4. The simulation results were compared with the experimental results, and the deviation was about ±3.8%, which may be due to an error in the instrument as well as environmental conditions during the analysis. The outcome of results can be used for real-life applications in industrial water heating and domestic water heating especially, the places exposed to low solar radiation intensity throughout the year.

show abstract

Section: Introductionmentioning

confidence: 99%

Experimental and Computational Analysis of Aluminum-Coated Dimple and Plain Tubes in Solar Water Heater System

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Results showed that thermal efficiency with using porous media was greater than this without using it. Double waterway in vacuum tube technology has been used in new design, fabrication and performance inspection of parabolic trough by Bassem et al [9]. This system can be used to raise the temperature of water in the winter without auxiliary devices.…”

Section: Introductionmentioning

confidence: 99%

Archive of Mechanical Engineering

Salih

2022

View full text Add to dashboard Cite

A numerical investigation of thermal prediction of double-pass solar air heater of-counter flow is developed in the present study. The main idea of the current study is that the collector consists of two layers of glass so that the middle layer is glass instead of the usual metal plate. The performance of double-pass solar air heater is studied for a wide range of solar radiation intensities (600, 750 and 900 W/m 2 ). A FORTRAN-90 program is built to simulate the mathematical model of double-pass solar air heater based on solving steady state two-dimensional Navier-Stokes equations and energy equation based on finite volume method. Turbulence effect is simulated by two equations 𝑘-𝜀 module. The results are compared with the results of a previous experimental study and a good agreement was found. From compression calculating efficiency of the present and traditional collector for each solar intensity, it was found that the efficiency of the current collector is higher than that of the traditional one, where the efficiency of the current collector at the solar intensity of (600, 750 and 900) W/m 2 are (0.529, 0.514 and 0.503), respectively, while those of the traditional collector (0.508, 0.492 and 0.481), respectively. In addition to this, the effect of the mass flow rate on the temperature difference of the current proposed collector was studied. Three values of the mass flow rate were studied (0.009, 0.018, and 0.027) kg/s at solar intensity of 750 W/m 2 . From this it was found that the temperature difference decreases with increasing mass flow rate. Accordingly, the efficiency decreases.

show abstract

Experimental Study of Double Pass water passage in Evacuated Tube with Parabolic Trough Collector

Cited by 2 publications

References 8 publications

Experimental and Computational Analysis of Aluminum-Coated Dimple and Plain Tubes in Solar Water Heater System

Experimental and Computational Analysis of Aluminum-Coated Dimple and Plain Tubes in Solar Water Heater System

Archive of Mechanical Engineering

Contact Info

Product

Resources

About