Quantifying Soiling Accumulation on Photovoltaic Modules Using Standard Testing Results

Name: Phuwadet Meksuwan

Address: King Mongkut’s University of Technology Thonburi (KMUTT)

Organization : Environment and Materials Energy Technology Program, School of Energy

Email : dhirayut.che@kmutt.ac.th

Name: Dhirayut Chenvidhya

Address: King Mongkut’s University of Technology Thonburi (KMUTT)

Organization : Pilot Plant Development and Training Institute (PDTI) CES Solar Cells Testing Center (CSSC)

Name: Sirichai Thepa

Address: King Mongkut’s University of Technology Thonburi (KMUTT)

Organization : Environment and Materials Energy Technology Program, School of Energy

Name: Krissanapong Kirtikara

Address: King Mongkut’s University of Technology Thonburi (KMUTT)

Organization : Pilot Plant Development and Training Institute (PDTI) CES Solar Cells Testing Center (CSSC)

Name: Roongrojana Songprakorp

Address: King Mongkut’s University of Technology Thonburi (KMUTT)

Organization : Environment and Materials Energy Technology Program, School of Energy

Name: Buntoon Wiengmoon

Address: Naresuan University (NU)

Organization : Faculty of Science Department of Physics

keyword: PV Modules

; Soiling Accumulation

; Dust Deposition

; Soiling Loss

Abstract: Quantifying soiling accumulation on PV modules installed in the field can be determined by using standard laboratory testing results of short circuit current (Isc) and temperature coefficients. Soiling accumulation on PV modules affects to attenuate optical transmission to solar cells that is represented by reduction of Isc. Two c-Si PV modules were selected to present. The two PV modules were installed for a period of six months in outdoor conditions. The data of Isc were collected and then corrected different performances by using measurement results from the laboratory. All data were converted and normalized to data at STC condition by using Isc at STC and temperature coefficient of Isc. It is found that soiling accumulation was 8.8% at maximum values. Increasing of soiling accumulation was 6.6% for a period of 42 days with no rainy day. In this paper, it is found that the rate of increasing soiling accumulation on clean glass is higher than on soiled glass. For the clean glass module, soiling accumulation was 0.71%, but the soiled glass was 0.31%, in the same 15-days period. The results of power loss, due to soiling accumulation, of a PV system installed beside the experiment were also reported. The system Power loss was 7.11%, but Isc reduction of module was 6.25% for a period of 34 days with no rainy day

Patumwan Institute of Technology. Library

Address: BANGKOK

Email: somsuay12@hotmail.com

Created: 2563

Modified: 2022-12-26

Issued: 2022-12-26

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