Geographic variation of solar water heater performance in Europe

Y. G. Yohanis, O. Popel, S. E. Frid, B. Norton

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Solar water heater (SWH) performance has been analysed using the 'number of days' method for 147 different sites in all European countries. The total number of days that the temperature of delivered solar heated water reaches or exceeds specified demand temperatures is correlated with solar radiation on a horizontal surface for summer, warm half-year, and whole year periods. Maps are presented and discussed showing the contours for the number of days that an illustrative SWH met different hot water demand temperatures. Correlations between number of days water is provided at a specified temperature and solar fractions for the same periods are determined.

    Original languageEnglish
    Pages (from-to)395-407
    Number of pages13
    JournalProceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy
    Volume220
    Issue number4
    DOIs
    Publication statusPublished - Jun 2006

    Keywords

    • Geographic variations
    • Solar water heaters
    • Solar water heating

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