Numerical optimization and convective thermal loss analysis of improved solar parabolic trough collector receiver system with one sided thermal insulation

Chandra, Yogender Pal; Singh, Arashdeep; Mohapatra, S.K.; Kesari, J.P.; Rana, Lokesh

doi:10.1016/j.solener.2017.02.051

Cited by 49 publications

(9 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The 3D CFD model (Section 4) takes no account of the two solar tubes, which is due to the fact that the model was developed to verify the in-house model comprising only the most essential elements of the solar collector, i.e., absorbers, U-tubes, and the solar fluid. It was not the task of the 3D model to precisely map the entirety of the occurring phenomena, which was the case in other works, e.g., References [23,34]. For this reason, the heat flux set on the absorber outer walls (Wall_d and Wall_c) was the same as in the in-house model, as were the mass flux and the HTF temperature.…”

Section: Resultsmentioning

confidence: 99%

“…They validated their model against the testing data presented in Reference [17]. According to the authors of Reference [23], the most important conclusion drawn from their research was the reduction in convective losses by about 12.5% compared to the standard structure filled with air.…”

Section: Introductionmentioning

confidence: 95%

“…This software is the leading tool for flow and heat simulations. It was also used in previous studies to simulate various solar thermal collectors [12,18,23,34]. The developed model is three-dimensional.…”

Section: D Cfd Modelmentioning

confidence: 99%

“…Reference [23] presented the results of CFD modeling of a PTC, in which annular receivers were partially filled with air. According to the authors, the solution is dedicated to PTC low-temperature applications.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Mathematical Model of a Sun-Tracked Parabolic Trough Collector and Its Verification

2020

View full text Add to dashboard Cite

The paper presents a one-dimensional distributed parameter model for simulating the transient-state operation of a parabolic trough collector (PTC). The analyzed solar collector has a module design and is equipped with a two-axis sun-tracking system to increase the solar energy yield. The single module is composed of an evacuated tube and a set of parabolic mirrors acting as reflectors. In each of the collector tubes, two aluminum U-tubes are installed, enabling heat intake by the solar fluid. The collector is intended for household applications, as well as other medium thermal energy demand uses. During the numerical model development, appropriate energy balance differential equations are formulated for the collector individual components. The equations are solved using different schemes. As a result, a time- and space-dependent temperature series for each of the collector components and the working fluid are obtained. To select an appropriate time and spatial steps for the developed model and to verify the reliability of the results received, the collector model is also implemented in ANSYS Fluent. The results of the one-dimensional model calculations and comparisons carried out in ANSYS demonstrate considerable agreement. In particular, the values of the fluid temperature at the collector outlet, calculated using the model developed, show high consistency with the ANSYS Fluent results. Furthermore, a preliminary experimental verification of the proposed model is carried out on a test stand currently under construction. The computed and measured temperature course of the fluid at the collector outlet is compared. In this case, the results are also satisfactory.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 95%

Section: D Cfd Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Mathematical Model of a Sun-Tracked Parabolic Trough Collector and Its Verification

2020

View full text Add to dashboard Cite

show abstract

“…This paper shows how the exergy efficiency of a typical PTC system can vary if receiver tube design and size is varied on different rim angles. Exergetic efficiency is defined as the ratio of exergy gain to the exergy of input solar radiation (Allouhi et al 2018); (Chandra et al 2017); (Khakrah et al 2018). It is represented in the form of an equation below:…”

Section: Exergy Analysismentioning

confidence: 99%

Thermal and Geometrical Assessment of Parabolic Trough Collector Mounted Double Evacuated Novel Receiver Tube System

Thappa

Chauhan

Anand

et al. 2021

Preprint

View full text Add to dashboard Cite

This paper particularly aims to highlight the necessity of optimal geometric design considerations of a parabolic trough collector (PTC) mounted novel receiver tube in view of efficient operation and high-end performance. Many investigations, analysis, and validation have been done in this regard as solar energy based PTC now a commercially mature technology acknowledges a variety of role in the form of power generation and other thermal applications. This article identifies the optimal rim angle corresponding to its tube size as required for high exergetic gains. Almost six receiver tubes, distinct in terms of dimensions and number of covers are compared for their best results to be mounted on adequate geometry with different rim angle (40°, 80°, and 120°). A significant variation of flow rate (i.e. 16 to 216 litre/hr) and inlet fluid temperature (i.e. 323 K, 423 K, 523 K, 623 K, and 723 K) has been extensively detailed about high energy and exergy retrieval from the system. The study reports that all the favorable results are found with the receiver tube having a diameter of 0.027 m and a double envelope, compared to other design considerations. Results show that as the flow rate increases energy efficiency also increases up to some extent along with increasing receiver tube temperature. The highest energy and exergy efficiency as reported to be 79.4% and 47% respectively with 80o being the optimal rim angle for a 5.7 m wide parabolic aperture.

show abstract

Solar Energy

2024

Alternative and Unconventional Energy Sources

View full text Add to dashboard Cite

Numerical optimization and convective thermal loss analysis of improved solar parabolic trough collector receiver system with one sided thermal insulation

Cited by 49 publications

References 18 publications

Mathematical Model of a Sun-Tracked Parabolic Trough Collector and Its Verification

Mathematical Model of a Sun-Tracked Parabolic Trough Collector and Its Verification

Thermal and Geometrical Assessment of Parabolic Trough Collector Mounted Double Evacuated Novel Receiver Tube System

Solar Energy

Contact Info

Product

Resources

About