... non-isothermal apparent emissivity apparent absorptivity absorber radiation solar receiver Directorate for Engineering 10.13039/100000084 1749395 Solar–thermal systems are widely used to produce power and to capture thermal energy for water desalination and a variety...

...Pranjal Prasad Newar; Biplab Das A roughened solar air heater is developed numerically and experimentally with a novel roughness in the absorber. The roughness incorporated is a combination of rectangular and semi-circular ribs. The analysis is done to improve the thermal characteristics...

... is the solar receiver mounted on top of the solar tower, which absorbs the incident high-flux radiation and heats a heat transfer fluid. The proposed high-temperature solar receiver concept consists of a cavity containing a reticulated porous ceramic (RPC) structure for volumetric absorption of concentrated...

..., and ambient temperature, working fluid outlet temperature, glass, and absorber tube surface temperatures were calculated. In the study conducted in this section, calculations were made considering that, unlike the experimental setup in Fig. 2 , the receiver pipe and glass enclosure have one inlet and one...

... absorber derived from billboard solar tower technology and operated with air as the heat transfer medium. Computational fluid dynamic models are developed based on an experimental campaign conducted at a solar furnace facility. The computational analyses indicated that employing the DP design instead...

... as an absorber having more exposed area to the sunlight with an ability to store 21 L of water inside it that serves as a sensible energy storage to mitigate the intermittency issues. At the stage of proof of concept, the effectiveness of the novel collector design is not known. Moreover, its performance...

... been proposed for the absorbing plate of SAHs. The Nusselt number, pressure loss pumping power, and friction factor were computed by experimental and numerical studies for three different arrangements of jets, i.e., 1 × 1 square, 2 × 2, and 3 × 3 jet array with three target plates, i.e., smooth...

... for publication in the J ournal of S olar E nergy E ngineering : I ncluding W ind E nergy and B uilding E nergy C onservation . 13 03 2023 16 11 2023 16 11 2023 09 01 2024 thermo-hydraulic TSAHD Nusselt number friction factor thermal enhancement ratio absorber...

... absorbing plate of size 1500 × 750 × 2 mm is placed in the wooden box, as shown in Fig. 2 . The absorber plate is coated with black paint to maximize its absorption of solar energy. Rectangular-shaped steel baffles are welded to the absorber to guide the flow and increase heat transfer to the fluid...

... absorber collector heating solar reactor system The peak and equilibrium of carbon dioxide emissions is a major issue that people all over the world must face in the future. Solar energy is “inexhaustible” and can steadily reduce carbon emissions [ 1 – 5 ]. By concentrating the light...

....2021.111115 a = absorbance e = extinction f = final i = initial s = scattering λ = wavelength α = absorbance spectra δ = declination angle θ = acceptance angle φ = angle of incidence ∅ = latitude angle...

...Mohamed Salim Djenane; Seddik Hadji; Omar Touhami; Abdel Halim Zitouni This paper proposes an investigation of a novel design of receiver absorber tube (circular–trapezoidal shaped) for parabolic trough concentrator (PTC) system aiming at catching a part of the lost (reflected) solar rays due...

... ), pp. 1439 – 1448 . 10.1016/j.enconman.2010.09.037 [70] Patnaik , V. , Perez-Blanco , H. , and Ryan , W. A. , 1993 , “ A Simple Model for the Design of Vertical Tube Absorbers ,” Oak Ridge National Laboratory , Oak Ridge, TN , Report No. CONF-930675-7, https://www.osti.gov...

...Bibhrat Roy; Desireddy Shashidhar Reddy; Mohd. Kaleem Khan This paper investigates a solar air heater’s thermohydraulic and thermogeometric performances with an artificially roughened absorber plate with Joukowski airfoil ribs. The rib height and shape have a bearing on the overall performance...

... in an Absorber ,” US Patent 9033528 B2. [18] Löf , G. O. G. , and Duffie , J. A. , 1963 , “ Optimization of Focusing Solar-Collector Design ,” ASME J. Eng. Power , 85 ( 3 ), pp. 221 – 228 . 10.1115/1.3675263 [19] Rabl , A. , 1976 , “ Comparison of Solar Concentrators ,” Sol...

... System With Reversed Absorber ,” Int. J. Food Eng. , 13 ( 11 ), pp. 1 – 11 . 10.1515/ijfe-2017-0081 [41] Saxena , G. , 2020 , “ Performance Evaluation and Drying Kinetics for Solar Drying of Hygroscopic Crops in Vacuum Tube Assisted Hybrid Dryer ,” ASME J. Sol. Energy Eng. , 142 ( 5...

... performance of the CPC–CPVT system is the non-uniform heat flux distribution on the absorber surface. In the present paper, detailed ray-tracing simulations have been carried out to understand the heat flux distribution characteristics of CPC with different geometrical conditions, and those are concentration...

... ind E nergy and B uilding E nergy C onservation . 30 01 2022 09 09 2022 09 09 2022 27 01 2023 absorber efficiency energy heat transfer solar receiver Solar Energy Technologies Program 10.13039/100006115 33869 Solid particle receivers...

...Faisal Altwijri; S. A. Sherif; Ahmed M. Alshwairekh This paper reports on a parametric investigation of the thermal enhancement of a double-reflector parabolic trough collector when employing an in-line mixed V-shape (IMVS) ribbed absorber tube. Three heat transfer fluids (HTFs) are investigated...

...Dheeraj Kumar; Apurba Layek An effort is made to study the performance of a solar air heater having the absorber surface roughened by providing staggered, twisted, and V-shaped ribs roughness. The liquid crystal thermography technique is applied to get the Nu distribution over the surface...