AS/NZS 4234:2008 Heated water systems - Calculation of energy consumption
Standards Australia/Standards New Zealand
Supersedes: AS 4234-1994 Solar water heaters - Domestic and heat pump - Calculation of energy consumption
Draft Designation: DR 07274Sets out a method of evaluating the annual energy performance of water heaters using a combination of test results for component performance and a mathematical model to determine the standardized annual purchased energy use. The procedure is applicable to electric, gas and solar water heaters with integral boosting or preheating into a conventional storage or instantaneous water heater and to heat pump water heaters. For solar and heat pump water heaters, displaced purchased energy relative to reference water heaters is also calculated.
Originated as AS4234-1994. Jointly revised and designated AS/NZS 4234:2008. Reissued incorporating Amendment No. 1 (March 2011). Reissued incorporating Amendment No. 2 (November 2011). Reissued incorporating Amendment No. 3 (November 2014).
Solar Water Heaters.
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Australian Chamber of Commerce and Industry; Australian Electrical and Electronic Manufacturers Association; Australian Industry Group; Australian and New Zealand Solar Energy Society; Chartered Institution of Building Services Engineers; Department of Energy, Utilities and Sustainability (NSW); Energy Efficiency and Conservation Authority of New Zealand; Gas Appliance Manufacturers Association of Australia; Institution of Professional Engineers New Zealand; James Cook University; Massey University; Master Plumbers, Gasfitters and Drainlayers New Zealand; New Zealand Solar Industries Association; Office of the Renewable Energy Regulator; Sustainability Victoria; The University of New South Wales; Waikato Institute of Technology.
