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BOS ISO 9459-4_2013


Solar heating — Domestic water heating systems
Solar heating — Domestic water heating systems— Part 4:System performance characterization by
means of component tests and computer simulation

SKU: BOS ISO 9459-4_2013 Category: Product ID: 30114

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This International Standard specifies a method of evaluating the annual energy performance of solar water heaters using a
combination of test results for component performance and a mathematical model to determine an annual load cycle task
performance under specified weather and load conditions. The procedure is applicable to solar water heaters with integral
backup or preheating into a conventional storage or instantaneous water heater and to integral collector storage water
heaters. System operating requirements specified in this International Standard are for the purpose of determining an
annual performance rating for domestic water heaters. There are no product design or operation
requirements in this International Standard.

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