A novel asymmetric compound parabolic collector under experimental and numerical investigation

Korres, Dimitrios N.; Tzivanidis, Christos

doi:10.1016/j.renene.2022.08.030

Cited by 14 publications

(14 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…but now, from Equation ( 6), with WðθðtÞ, ϕðtÞÞ ≡ GðtÞPðθðtÞÞ cos θðtÞ cos ϕðtÞ ≡ GðtÞPðθðtÞÞ cos 2 ðωtÞ ðcos 2 ðωtÞ þ tan 2 δÞ 1=2 (8) It is to be emphasized that here the angle ϕ(t) depends upon the angle δ and is zero at the equinox since there δ = 0 and from Equation ( 6), ϕ ¼ δ ¼ 0, for all hours t. Additionally, it is important to note that at noon, t ¼ 0, then ϕ = δ.…”

Section: The Trough Long Axis In Ew Orientationmentioning

confidence: 99%

See 1 more Smart Citation

A Theoretical Study of the Energy‐Harvesting Properties of Nontracking Semicircular Concentrating Troughs

Ratismith

Briggs

2023

Energy Tech

View full text Add to dashboard Cite

The objective of this paper is to give a theoretical appraisal of the light harvesting attributes of non‐tracking concentrating troughs of a simple semicircular cross section. Emphasis is placed on the importance of the geometry of the caustic exhibited by reflection from a semicircular surface. The efficacy of various placings of the absorber tube is assessed using the method of ray tracing calculations. Utilisation of the caustic geometry leads to troughs of optimised width which can capture 100% of the incident radiation normal to the fixed trough aperture. Troughs of different optimised widths (in units of the diameter of planar or cylindrical absorbers) are examined. The major results are to show that these troughs, with fixed concentration ratios, have universal properties which scale with the absorber size and that a favourable comparison is made with the ubiquitous compound parabolic concentrator (CPC) of the same order of magnitude in size. This work suggests that there is further scope for the optimised design and testing of semicircular troughs.This article is protected by copyright. All rights reserved.

show abstract

Section: The Trough Long Axis In Ew Orientationmentioning

confidence: 99%

“…[ 7 ] There is still great current interest in the further development of CPC, see for example. [ 8–10 ] A problem with parabolic forms is that their height increases quadratically with their width, which mitigates against the capture of light incident at large angles.…”

Section: Introductionmentioning

confidence: 99%

A Theoretical Study of the Energy‐Harvesting Properties of Nontracking Semicircular Concentrating Troughs

Ratismith

Briggs

2023

Energy Tech

View full text Add to dashboard Cite

show abstract

“…The optical efficiency was selected to be calculated by Equation ( 2) [17], to take into consideration the effect of the incident angle change.…”

Section: Mathematical Modelingmentioning

confidence: 99%

“…Parameter Q s,max corresponds to the maximum possible solar power, which could be available on the aperture of the collector and which is equal to the product of the effective solar irradiation in a plane perpendicular to the solar rays with the aperture area of the collector as Equation (3) [17] shows.…”

Section: Mathematical Modelingmentioning

confidence: 99%

See 1 more Smart Citation

Thermal and Optical Analyses of a Hybrid Solar Photovoltaic/Thermal (PV/T) Collector with Asymmetric Reflector: Numerical Modeling and Validation with Experimental Results

et al. 2023

Self Cite

View full text Add to dashboard Cite

This study presents a combined thermal and optical, three-dimensional analysis of an asymmetric compound parabolic collector (ACPC) with an integrated hybrid photovoltaic/thermal (PV/T) receiver with the aim of establishing a sustainable approach in two ways: firstly, by determining the optimal tilt angle for operations, and secondly, by introducing an innovative simulation method which reduces computational cost while calculating thermal performance. Initially the Incident Angle Modifier ( ) was calculated for a wide range of incident angles, and the ray-tracing results were verified using three different simulation tools (Tonatiuh, COMSOL, and SolidWorks) with mean deviations being lower than 4%. The optimal tilt angle of the collector was determined for seven months of the year by conducting a detailed ray-tracing analysis for the mean day of each month considering whole day operation. In the thermal analysis part, the authors introduced novel numerical modeling for numerical simulations. This modeling method, designed with sustainability in mind, enables lighter computational domains for the air gap while achieving accurate numerical results. The approach was established using two distinct simulation tools: COMSOL and SolidWorks. From the optical analysis, it was found that in all months examined there is a four-hour time range around solar noon in which the optimum tilt angle remains constant at a value of 30°. The numerical models constructed for the thermal analysis were verified with each other (6.15% mean deviation) and validated through experimental results taken from the literature regarding the examined collector (<6% mean deviation). In addition, the two simulation tools exhibited a deviation of around 6% between each other. Finally, the thermal performance of the collector was investigated for the mean day of September at solar noon by adopting the optimal tilt angle for that month according to the optical analysis, considering inlet temperatures from 20 °C up to 80 °C.

show abstract

A solar spectral splitting-based PVT collector with packed transparent tube receiver for co-generation of heat and electricity

Barthwal,

Rakshit

2023

Applied Energy

View full text Add to dashboard Cite

A novel asymmetric compound parabolic collector under experimental and numerical investigation

Cited by 14 publications

References 27 publications

A Theoretical Study of the Energy‐Harvesting Properties of Nontracking Semicircular Concentrating Troughs

A Theoretical Study of the Energy‐Harvesting Properties of Nontracking Semicircular Concentrating Troughs

Thermal and Optical Analyses of a Hybrid Solar Photovoltaic/Thermal (PV/T) Collector with Asymmetric Reflector: Numerical Modeling and Validation with Experimental Results

A solar spectral splitting-based PVT collector with packed transparent tube receiver for co-generation of heat and electricity

Contact Info

Product

Resources

About