AS/NZS 4234:2008
Superseded
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Heated water systems - Calculation of energy consumption
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08-21-2008
06-25-2026
Sets 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.
| Committee |
CS-028
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| DocumentType |
Standard
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| ISBN |
0 7337 8872 6
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| Pages |
73
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| ProductNote |
Pending Revision indicates that as a result of the Aged Standards review process, the document needs updating. If no project proposal, meeting the quality criteria, is received within the 12 month timeframe, the document shall be withdrawn.
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| PublisherName |
Standards Australia
|
| Status |
Superseded
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| SupersededBy | |
| Supersedes | |
| UnderRevision |
This Standard sets 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. Solar and solar boosted heat pump water heater types not covered in the application of this Standard can be tested under AS 2984 to obtain an annual performance assessment.There are no product design or operation requirements in this Standard. System operating parameters specified in this Standard are only for the purpose of performance modelling.
Originated as AS4234-1994.
Jointly revised and designated AS/NZS4234:2008.
Reissued incorporating Amendment No. 1 (March 2011).
Reissued incorporating Amendment No. 2 (November 2011).
Reissued incorporating Amendment No. 3 (November 2014).
A newer version of this standard is available.
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