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Title: Design, simulation and experimental characterization of a novel parabolic trough hybrid solar photovoltaic/thermal (PV/T) collector

Authors:
; ; ; ; ; ; ; ;
Publication Date:
Sponsoring Org.:
USDOE Advanced Research Projects Agency - Energy (ARPA-E)
OSTI Identifier:
1396829
Grant/Contract Number:
ARPA-E DE-AR0000464
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Renewable Energy
Additional Journal Information:
Journal Volume: 101; Journal Issue: C; Related Information: CHORUS Timestamp: 2017-10-04 15:55:45; Journal ID: ISSN 0960-1481
Publisher:
Elsevier
Country of Publication:
United Kingdom
Language:
English

Citation Formats

Widyolar, Bennett K., Abdelhamid, Mahmoud, Jiang, Lun, Winston, Roland, Yablonovitch, Eli, Scranton, Gregg, Cygan, David, Abbasi, Hamid, and Kozlov, Aleksandr. Design, simulation and experimental characterization of a novel parabolic trough hybrid solar photovoltaic/thermal (PV/T) collector. United Kingdom: N. p., 2017. Web. doi:10.1016/j.renene.2016.10.014.
Widyolar, Bennett K., Abdelhamid, Mahmoud, Jiang, Lun, Winston, Roland, Yablonovitch, Eli, Scranton, Gregg, Cygan, David, Abbasi, Hamid, & Kozlov, Aleksandr. Design, simulation and experimental characterization of a novel parabolic trough hybrid solar photovoltaic/thermal (PV/T) collector. United Kingdom. doi:10.1016/j.renene.2016.10.014.
Widyolar, Bennett K., Abdelhamid, Mahmoud, Jiang, Lun, Winston, Roland, Yablonovitch, Eli, Scranton, Gregg, Cygan, David, Abbasi, Hamid, and Kozlov, Aleksandr. Wed . "Design, simulation and experimental characterization of a novel parabolic trough hybrid solar photovoltaic/thermal (PV/T) collector". United Kingdom. doi:10.1016/j.renene.2016.10.014.
@article{osti_1396829,
title = {Design, simulation and experimental characterization of a novel parabolic trough hybrid solar photovoltaic/thermal (PV/T) collector},
author = {Widyolar, Bennett K. and Abdelhamid, Mahmoud and Jiang, Lun and Winston, Roland and Yablonovitch, Eli and Scranton, Gregg and Cygan, David and Abbasi, Hamid and Kozlov, Aleksandr},
abstractNote = {},
doi = {10.1016/j.renene.2016.10.014},
journal = {Renewable Energy},
number = C,
volume = 101,
place = {United Kingdom},
year = {Wed Feb 01 00:00:00 EST 2017},
month = {Wed Feb 01 00:00:00 EST 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1016/j.renene.2016.10.014

Citation Metrics:
Cited by: 8works
Citation information provided by
Web of Science

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  • The purpose of this work consists in thermodynamic modeling of hybrid photovoltaic-thermal (PV/T) solar systems, pursuing a modular strategy approach provided by Simulink/Matlab. PV/T solar systems are a recently emerging solar technology that allows for the simultaneous conversion of solar energy into both electricity and heat. This type of technology present some interesting advantages over the conventional ''side-by-side'' thermal and PV solar systems, such as higher combined electrical/thermal energy outputs per unit area, and a more uniform and aesthetical pleasant roof area. Despite the fact that early research on PV/T systems can be traced back to the seventies, only recentlymore » it has gained a renewed impetus. In this work, parametric studies and annual transient simulations of PV/T systems are undertaken in Simulink/Matlab. The obtained results show an average annual solar fraction of 67%, and a global overall efficiency of 24% (i.e. 15% thermal and 9% electrical), for a typical four-person single-family residence in Lisbon, with p-Si cells, and a collector area of 6 m{sup 2}. A sensitivity analysis performed on the PV/T collector suggests that the most important variable that should be addressed to improve thermal performance is the photovoltaic (PV) module emittance. Based on those results, some additional improvements are proposed, such as the use of vacuum, or a noble gas at low-pressure, to allow for the removal of PV cells encapsulation without air oxidation and degradation, and thus reducing the PV module emittance. Preliminary results show that this option allows for an 8% increase on optical thermal efficiency, and a substantial reduction of thermal losses, suggesting the possibility of working at higher fluid temperatures. The higher working temperatures negative effect in electrical efficiency was negligible, due to compensation by improved optical properties. The simulation results are compared with experimental data obtained from other authors and perform reasonably well. The Simulink modeling platform has been mainly used worldwide on simulation of control systems, digital signal processing and electric circuits, but there are very few examples of application to solar energy systems modeling. This work uses the modular environment of Simulink/Matlab to model individual PV/T system components, and to assemble the entire installation layout. The results show that the modular approach strategy provided by Matlab/Simulink environment is applicable to solar systems modeling, providing good code scalability, faster developing time, and simpler integration with external computational tools, when compared with traditional imperative-oriented programming languages. (author)« less
  • Hybrid Photovoltaic/Thermal (PV/T) conversion is a relatively new and promising technology for the production of both electrical and thermal energy simultaneously. A number of theoretical and experimental studies have been reported in the past on PV/T systems with air and liquid as heat transfer fluid. Studies on PV/T collectors are being made at Indian Institute of Technology in collaboration with All India Council of Technical Education (AICTE), New Delhi. Earlier, present authors have carried out detailed simulation studies on PV/T air heating collectors and have shown that hybrid PV/T systems have great potential in terms of their system efficiencies. Itmore » is further envisaged that the efficiency of a hybrid PV/T collector can be enhanced by its effective coupling with a compound parabolic concentrator (CPC). In the present investigation a theoretical analysis has been presented to study the performance of a hybrid PV/T collector coupled with a CPC. In the design, several CPC troughs are combined in a single collector panel. The absorber of the hybrid PV/T collector under investigation consists of an array of solar cells for generation of electricity, while collector fluid circulating past the absorber provides useful thermal energy as in a conventional flat plate collector. In the analysis, it is assumed that solar cell efficiency can be represented by a linear decreasing function of its temperature. Energy balance equations have been developed for various components of the system. Based on the developed analysis both thermal and electrical performance of the system as a function of system design parameters are presented and discussed. Results have been presented to compare the performance of hybrid PV/T collector coupled with and without CPC.« less
  • Two wind-tunnel tests were conducted to investigate specifically the pitching moment characteristics of parabolic-trough solar-collector modules deployed within a collector array. The collector modules were located within various rows of a simulated array configuration to investigate shielding effects from upstream collector rows and/or windscreen fences. Selected fence configurations and fence spacing upstream from the initial array row were studied. The test results demonstrate that pitching moment is significantly reduced by shielding provided by upstream fencing or collector rows.
  • This paper studies a collector design that utilizes unglazed photovoltaic/thermal (PV/T) collectors preheating air for glazed air heating modules. The performance modeling of these collectors is examined both individually and in series. For each collector type, a dynamic, finite difference, first-law model has been created using literature correlations for friction. The models were compared to performance data, calibrating the models by scaling of friction terms for best fit. The calibrated models generally agree well with the experimental data; even during sudden changes to ambient conditions. The root mean square error between the unglazed PV/T model and experiment results for themore » useful thermal energy gain and the outlet air temperature are 7.12 W/m{sup 2} and 1.07 C, respectively. The annual source energy performance of the building-integrated PV/T (BIPV/T) array is then simulated for residential applications in seven climate zones of the United States of America. The performance of the BIPV/T array is characterized by the amount of net electrical energy and useful thermal energy produced. The useful thermal energy is defined as the amount of energy offset by the BIPV/T system for water heating and space conditioning. A BIPV/T system composed 87.5% of PV modules, and 12.5% of glazed air heating modules, offsets the same amount of source energy as a roof-mounted PV system of the same area. This array composition increases the thermal energy gain by 47% over a BIPV/T array composed solely of PV modules.« less