EU PVSEC Programme Online
EU PVSEC 2021, 6 - 10 September 2021
Presentation: 5CV.2.45 Reduction in Solar Power Generation Due to Soiling Losses
Type: Visual
Date: Wednesday, 8th September 2021
13:30 - 15:00
Author(s): S.H. Abbas Rizvi, V. Singh, M. Kumar, R. Bhasin, N. Gupta, J.S. Chawla
Presenter / Speaker: S.H. Abbas Rizvi, IIT Delhi, New Delhi, India
Event: Conference Conference
Session: 5CV.2 Operation, Performance and Maintenance of PV Systems
Topic: 5. 3 Operation, Performance and Maintenance of PV Systems
Summary / Abstract: The net irradiance available to photo-voltaic (PV) panels is greatly affected by the suspended and surface deposited particulate matter. The atmospheric aerosols effectively scatter and absorb the radiation passing through the lower atmosphere. Relatively smaller aerosol particles, such PM2.5 and PM10, have more considerable atmospheric residence time and cause a significant reduction in solar irradiance. Soiling or deposition of particulate matter (PM) and suspended aerosols together contribute to transmission loss of around 17-25% [1]. In the current study, we evaluate the losses due to soiling as a function of PM deposited per unit area. We implement a strategy to compare the global horizontal irradiance (GHI) values for two pyranometers enclosed inside separate boxes with a glass sheet on the top. One of the pyranometer boxes' glass sheet is regularly cleaned, and the other box observes soiling for a specific cycle. PM is collected from glass sheets on filter paper, which is analyzed for gravimetry and chemical compositions.