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RESEARCH PAPERS

Effect of Unglazed Transpired Collector on the Performance of a Polycrystalline Silicon Photovoltaic Module

[+] Author and Article Information
A. T. Naveed

 RETCan, 426 Tremblay Road, Ottawa, ON, K1G 0C5, Canadaatnaveed@retcan.com

E. C. Kang, E. J. Lee

 Korea Institute of Energy Research (KIER), 71-2 Jang-Dong Yusong-Gu, Daejeon 305-343, South Korea

J. Sol. Energy Eng 128(3), 349-353 (Mar 23, 2006) (5 pages) doi:10.1115/1.2212438 History: Received February 06, 2006; Revised March 23, 2006

The electrical power generated by a polycrystalline silicon photovoltaic (PV) module mounted on an unglazed transpired solar collector (UTC) has been studied and compared to that of a PV module without UTC for a quantitative analysis of electrical output and its role in reducing the simple payback periods of photovoltaic electrical systems. A 75W polycrystalline silicon PV module was fixed on an UTC in front of the ventilation fan, and effectiveness of cooling by means of the forced ventilation at the rate of 160CFM was monitored. The temperature reduction under forced ventilation was in the range of 39°C with a 5% recovery in the electrical output power on a typical day of the month of February 2005. The simulated and measured electrical power outputs are in reasonable agreement with root-mean-square error of 2.40. The life cycle assessment of a hypothetical PV system located at Daejeon, South Korea and consisting of 3kW PV modules fixed on a 50m2 UTC shows that with a possible reduction of 39°C in the operating temperatures, the system requires three 75W fewer PV modules. The simple payback period of PV system is reduced from 23yearsto15years when integrated into an UTC air heating system.

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Copyright © 2006 by American Society of Mechanical Engineers
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Figures

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Figure 1

Schematic diagrams of the experimental setup (a) PV without UTC and (b) PV with UTC

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Figure 2

A view of the UTC-PV system showing the location of the polycrystalline silicon module

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Figure 3

Variation of PV module temperature in UTC-PV and PV without UTC systems and irradiance on February 26, 2005

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Figure 4

Variation in the electrical output of the PV modules and the UTC-PV module temperature

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Figure 5

Variation in the output voltages of UTC-PV and PV without UTC module during the day

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Figure 6

Dependence of PV electrical efficiency on the temperature of PV-UTC and PV without UTC systems

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