Water quality on solar water heaters in Remote Islands

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


The use of solar water heaters (SWHs) in Taiwan's remote islands has encountered scaling and corrosion problems attributed to sources of water. In this study, the Langelier Saturation Index (LSI), Ryznar Stability Index (RSI), Puckorius Scaling Index (PSI) and Larson-Skold Corrosive Index (LSCI) were employed to assess scaling and corrosion caused by tap-water and groundwater used for SWHs in Penghu, Kinmen, and Lienchiang Counties. The LSI, RSI and PSI results show a slight scaling tendency in Penghu County, but there is a corrosion tendency in Kinmen and Lienchiang Counties. Nevertheless, all LSCI values show a serious corrosion tendency. In addition, chloride ion (Cl-) concentration levels are all higher than 35 mg/L, resulting in corrosion found in absorbing plates of SWHs using 304 stainless steel. Therefore, more corrosion-resistant metals are required for SWHs.

Original languageEnglish
Title of host publicationISES Solar World Congress 2015, Conference Proceedings
PublisherInternational Solar Energy Society
Number of pages10
ISBN (Electronic)9783981465952
Publication statusPublished - 2015
EventInternational Solar Energy Society, ISES Solar World Congress 2015, SWC 2015 - Daegu, Korea, Republic of
Duration: 2015 Nov 82015 Nov 12


OtherInternational Solar Energy Society, ISES Solar World Congress 2015, SWC 2015
Country/TerritoryKorea, Republic of

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment


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