Durability Issues and Service Lifetime Prediction of Electrochromic Windows for Buildings Applications

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Abstract

The purposes of this paper are to elucidate the crucial importance of durability and service lifetime prediction (SLP) for electrochromic windows (ECWs) and to present an outline for developing a SLP methodology for ECWs. The specific objectives are a) to illustrate the generic nature of SLP for several types of solar energy conversion or energy conservation devices, b) to summarize the majordurability issues associated with ECWs, c) to justify using SLP in the triad of cost, performance, and durability rather than just durability, d) to define and explain the seven major elements that constitute a generic SLP methodology, e) to provide background for implementing the SLP methodology for ECWs, including the complexity of the potential degradation mechanisms, and f) to provide anoutline of studies using ECWs for improving the durability of ECW materials and predicting a service lifetime for ECWs using the SLP methodology outlined in objective (d). Our major conclusions are that substantial R&D is necessary to understand the factors that limit ECW durability, and that it is possible to predict the service lifetime of ECWs.
Original languageAmerican English
Pages (from-to)419-436
Number of pages18
JournalSolar Energy Materials and Solar Cells
Volume56
DOIs
StatePublished - 1999

NREL Publication Number

  • NREL/JA-510-22702

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