Prediction of degradation of polyolefins used in solar domestic hot water components

William Camisa, Susan C. Mantell, Jane H. Davidson, Gyanender Singh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

Solar Domestic Hot Water systems may include polymer components such as heat exchangers and absorbers. These components must be designed to consider heat transfer performance, mechanical (strength) performance and lifetime. Polymer degradation in potable hot water can be delayed through the use of antioxidant additives. In the present study, data are presented which show that antioxidant depletion in polyethylene (with a phenolic additive) is accelerated in potable hot water. Characteristic time scales are derived for this polymer/antioxidant combination at 80°C. These time scales indicate that the rate of antioxidant depletion is controlled by chlorine diffusion into the polymer (and subsequent reaction between the chlorine and antioxidant).

Original languageEnglish (US)
Title of host publicationASME 2010 4th International Conference on Energy Sustainability, ES 2010
Pages301-308
Number of pages8
DOIs
StatePublished - Dec 1 2010
EventASME 2010 4th International Conference on Energy Sustainability, ES 2010 - Phoenix, AZ, United States
Duration: May 17 2010May 22 2010

Publication series

NameASME 2010 4th International Conference on Energy Sustainability, ES 2010
Volume2

Other

OtherASME 2010 4th International Conference on Energy Sustainability, ES 2010
CountryUnited States
CityPhoenix, AZ
Period5/17/105/22/10

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