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Title: Effect of the concentration ratio on energetic and exergetic performance of concentrating solar collectors with integrated transparent insulation materials

Abstract

The effect of the concentration ratio on the performance of parabolic trough and central receiver collectors with integrated Transparent Insulation Materials (TIMs) is analyzed in this work. A model based on optical, energy, and exergy analyses is developed to determine thermal and second law efficiencies of concentrated solar collectors as a function of the absorber temperature and concentration ratio. The results are compared with the respective traditional collector configurations without TIM. In general, high concentration ratios are fundamental to maintain high efficiencies. The incorporation of a TIM into concentrated solar collectors leads to higher thermal efficiencies at high operating temperatures even at low concentration ratios. An equivalent second law efficiency to that of the reference collector configuration can be achieved at lower concentration ratios by incorporating a TIM in parabolic trough or a TIM and a glass envelope in central receiver collectors. As a result, the idea of using a TIM deserves further exploration as it seems to be a promising alternative that contributes to a more efficient and cost-effective technology.

Authors:
ORCiD logo [1];  [2]; ORCiD logo [3]
  1. Idaho National Lab. (INL), Idaho Falls, ID (United States); Univ. de Medellin, Medellin (Colombia)
  2. Ingenieria Termica Ltda., Medellin (Colombia); Fundacion Ergon, Medellin (Colombia)
  3. Florida State Univ., Tallahassee, FL (United States)
Publication Date:
Research Org.:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1515004
Report Number(s):
INL/JOU-19-52621-Rev000
Journal ID: ISSN 2213-1388
Grant/Contract Number:  
AC07-05ID14517
Resource Type:
Accepted Manuscript
Journal Name:
Sustainable Energy Technologies and Assessments
Additional Journal Information:
Journal Volume: 32; Journal Issue: C; Journal ID: ISSN 2213-1388
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 42 ENGINEERING; Concentration solar collectors; Concentration ratio (C); Transparent Insulation Material (TIM); Thermal efficiency; Second law efficiency; Thermal losses

Citation Formats

Osorio, Julian D., Rivera-Alvarez, Alejandro, and Ordonez, Juan C. Effect of the concentration ratio on energetic and exergetic performance of concentrating solar collectors with integrated transparent insulation materials. United States: N. p., 2019. Web. doi:10.1016/j.seta.2019.01.005.
Osorio, Julian D., Rivera-Alvarez, Alejandro, & Ordonez, Juan C. Effect of the concentration ratio on energetic and exergetic performance of concentrating solar collectors with integrated transparent insulation materials. United States. doi:10.1016/j.seta.2019.01.005.
Osorio, Julian D., Rivera-Alvarez, Alejandro, and Ordonez, Juan C. Fri . "Effect of the concentration ratio on energetic and exergetic performance of concentrating solar collectors with integrated transparent insulation materials". United States. doi:10.1016/j.seta.2019.01.005.
@article{osti_1515004,
title = {Effect of the concentration ratio on energetic and exergetic performance of concentrating solar collectors with integrated transparent insulation materials},
author = {Osorio, Julian D. and Rivera-Alvarez, Alejandro and Ordonez, Juan C.},
abstractNote = {The effect of the concentration ratio on the performance of parabolic trough and central receiver collectors with integrated Transparent Insulation Materials (TIMs) is analyzed in this work. A model based on optical, energy, and exergy analyses is developed to determine thermal and second law efficiencies of concentrated solar collectors as a function of the absorber temperature and concentration ratio. The results are compared with the respective traditional collector configurations without TIM. In general, high concentration ratios are fundamental to maintain high efficiencies. The incorporation of a TIM into concentrated solar collectors leads to higher thermal efficiencies at high operating temperatures even at low concentration ratios. An equivalent second law efficiency to that of the reference collector configuration can be achieved at lower concentration ratios by incorporating a TIM in parabolic trough or a TIM and a glass envelope in central receiver collectors. As a result, the idea of using a TIM deserves further exploration as it seems to be a promising alternative that contributes to a more efficient and cost-effective technology.},
doi = {10.1016/j.seta.2019.01.005},
journal = {Sustainable Energy Technologies and Assessments},
number = C,
volume = 32,
place = {United States},
year = {2019},
month = {2}
}

Journal Article:
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This content will become publicly available on February 15, 2020
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