An end of service life assessment of PMMA lenses from veteran concentrator photovoltaic systems

Miller, David C. and Khonkar, Hussameldin I. and Herrero Martin, Rebeca and Anton Hernandez, Ignacio and Johnson, David K. and Hornung, Thorsten and Schmid-Schirling, Tobias and Vinzant, Todd B. and Deutch, Steve and To, Bobby and Sala Pano, Gabriel and Kurtz, Sarah R. (2017). An end of service life assessment of PMMA lenses from veteran concentrator photovoltaic systems. "Solar Energy Materials and Solar Cells", v. 167 ; pp. 7-21. ISSN 0927-0248. https://doi.org/10.1016/j.solmat.2017.03.031.

Description

Title: An end of service life assessment of PMMA lenses from veteran concentrator photovoltaic systems
Author/s:
  • Miller, David C.
  • Khonkar, Hussameldin I.
  • Herrero Martin, Rebeca
  • Anton Hernandez, Ignacio
  • Johnson, David K.
  • Hornung, Thorsten
  • Schmid-Schirling, Tobias
  • Vinzant, Todd B.
  • Deutch, Steve
  • To, Bobby
  • Sala Pano, Gabriel
  • Kurtz, Sarah R.
Item Type: Article
Título de Revista/Publicación: Solar Energy Materials and Solar Cells
Date: August 2017
Volume: 167
Subjects:
Freetext Keywords: AFM; CPV durability; Fresnel lens; PMMA; SEM; Reliability
Faculty: E.T.S.I. Diseño Industrial (UPM)
Department: Ingeniería Eléctrica, Electrónica Automática y Física Aplicada
Creative Commons Licenses: Recognition - No derivative works - Non commercial

Full text

[img] PDF - Users in campus UPM only until 31 August 2019 - Requires a PDF viewer, such as GSview, Xpdf or Adobe Acrobat Reader
Download (18MB)

Abstract

The optical performance of poly(methyl methacrylate) lenses from veteran concentrator photovoltaic modules was examined after the end of their service life. Lenses from the Martin-Marietta and Intersol module designs were examined from the “Solar Village” site near Riyadh, Saudi Arabia, as well as the Phoenix Sky Harbor airport, followed by the Arizona Public Service Solar Test and Research (APS-STaR) center in Tempe, Arizona. The various lens specimens were deployed for 20, 27, and 22 years, respectively. Optical characterizations included lens efficiency (Solar Simulator instrument), material transmittance and haze (of coupons cut from veteran lenses, then measured again after their faceted back surface was polished, and then measured again after the incident front surface was polished), and direct transmittance (as a function of detector's acceptance angle, using the Very Low Angular Beam Spread (“VLABS”) instrument). Lens efficiency measurements compared the central region to the entire lens, also using hot and cold mirror measurements to diagnose differences in performance. A series of subsequent characterizations was performed because a decrease in performance of greater than 10% was observed for some of the veteran lenses. The optimal focal distance of the lenses was quantified using the Solar Simulator, and then correlated to lens curvature using a recently developed measurement technique. Surface roughness was examined using atomic force microscopy and scanning electron microscopy. Facet geometry (tip and valley radius) was quantified on cross-sectioned specimens. Molecular weight was compared between the incident and faceted surfaces of the lenses.

Funding Projects

TypeCodeAcronymLeaderTitle
Madrid Regional GovernmentS2013/MAE-2780MADRID-PVMARTÍ VEGA, ANTONIOMateriales, dispositivos y tecnología para el desarrollo de la industria fotovoltaica

More information

Item ID: 50812
DC Identifier: http://oa.upm.es/50812/
OAI Identifier: oai:oa.upm.es:50812
DOI: 10.1016/j.solmat.2017.03.031
Official URL: https://www.sciencedirect.com/science/article/pii/S0927024817301459
Deposited by: Memoria Investigacion
Deposited on: 16 May 2018 11:09
Last Modified: 16 May 2018 11:09
  • Logo InvestigaM (UPM)
  • Logo GEOUP4
  • Logo Open Access
  • Open Access
  • Logo Sherpa/Romeo
    Check whether the anglo-saxon journal in which you have published an article allows you to also publish it under open access.
  • Logo Dulcinea
    Check whether the spanish journal in which you have published an article allows you to also publish it under open access.
  • Logo de Recolecta
  • Logo del Observatorio I+D+i UPM
  • Logo de OpenCourseWare UPM