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Research Papers

An Outdoor Experiment of a Lens-Walled Compound Parabolic Concentrator Photovoltaic Module on a Sunny Day in Nottingham

[+] Author and Article Information
Guiqiang Li

Department of Architecture and
Built Environment,
University of Nottingham,
Nottingham NG7 2RD, UK;
Department of Thermal Science and
Energy Engineering,
University of Science and Technology of China,
Hefei, Anhui 230026, China

Yuehong Su

Department of Architecture and
Built Environment,
University of Nottingham,
Nottingham NG7 2RD, UK
e-mail: yuehong.su@nottingham.ac.uk

Gang Pei

Department of Architecture and
Built Environment,
University of Nottingham,
Nottingham NG7 2RD, UK;
Department of Thermal Science and
Energy Engineering,
University of Science and Technology of China,
Hefei, Anhui 230026, China
e-mail: peigang@ustc.edu.cn

Hang Zhou, Xu Yu, Saffa Riffat

Department of Architecture and
Built Environment,
University of Nottingham,
Nottingham NG7 2RD, UK

Jie Ji

Department of Thermal Science and
Energy Engineering,
University of Science and Technology of China,
Hefei, Anhui 230026, China

1Correspondence authors.

Contributed by the Solar Energy Division of ASME for publication in the Journal of Solar Energy Engineering. Manuscript received November 5, 2012; final manuscript received May 15, 2013; published online September 16, 2013. Assoc. Editor: Santiago Silvestre.

J. Sol. Energy Eng 136(2), 021011 (Sep 16, 2013) (7 pages) Paper No: SOL-12-1296; doi: 10.1115/1.4024929 History: Received November 05, 2012; Revised May 15, 2013

A lens-walled compound parabolic concentrator (lens-walled CPC) has a larger half acceptance angle than a mirror CPC for the same geometrical concentration ratio of 2.5X, so it would be more suitable for the building-integrated application as a stationary solar concentrator. Based on our previous work, an outdoor experimental study of a sample trough lens-walled CPC PV module under sunny condition in Nottingham is described. The experimental results provide the verification of actual larger half acceptance angle obtained by the lens-walled CPC in comparison with a mirror CPC of the same size. Along with the analysis of the projected incidence angles, the experimental results also indicate that the lens-walled CPC of 2.5X orientated east–west may be a good choice for high latitude area as a stationary solar concentrator to give a satisfactory whole year performance.

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Figures

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Fig. 1

Principle of the experimental lens-walled CPC

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Fig. 2

Solar position diagram for the E–W orientation of a trough CPC

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Fig. 3

Solar position diagram for the N–S orientation of a trough CPC

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Fig. 4

Projected incidence angle for the E–W and N–S orientation of trough CPC, on March 26

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Fig. 5

The photograph of the lens-walled CPC PV modules

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Fig. 6

Changes of the environment parameters with local time

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Fig. 7

I-V curve of the lens-walled CPC PV for E–W and N–S orientation and nonconcentration PV at 9:30, 11:30, 16:30, respectively

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Fig. 8

Change of short-circuit current with local time

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Fig. 9

Change of the optical efficiency with local time

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Fig. 10

Change of the maximum power output of PV with local time

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Fig. 11

The projected incidence angle for N–S orientation of CPC for selected dates in Nottingham, UK (April 21–Oct. 21 are during British summer time)

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Fig. 12

The projected incidence angle for E–W orientation for selected dates in Nottingham, UK (April 21–Oct. 21 are during British summer time)

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