ISO 9459-3:1997
太阳热利用 家用热水系统 第3部分:带辅助热源太阳能系统的性能试验
Solar heating - Domestic water heating systems - Part 3: Performance test for solar plus supplementary systems
- 标准号
- ISO 9459-3:1997
- 发布
- 1997年
- 发布单位
- 国际标准化组织
- 当前最新
- ISO 9459-3:1997
- 适用范围
- This part of ISO 9459 establishes test procedures for characterizing the performance of solar domestic water heating systems with in-tank auxiliary boosting, and for predicting annual performance in any given climatic conditions. A “black box” approach is adopted which involves no assumptions about the type of system under test, and the procedures are therefore suitable for testing all types of systems, including forced circulation, thermosiphon, freon-charged and integrated collector-storage systems. This part of ISO 9459 applies to solar domestic water heating systems designed to heat potable water to be supplied solely for domestic water usage and is not intended to be applied to other systems. It is not generally applicable to concentrating systems. The solar-plus-auxiliary test procedures in clause 7 are carried out in typical operational conditions, the only restriction on the nature of systems that can be tested is that there shall be no long-term energy storage, and the storage capacity in the solar preheat section of the tank shall be less than twice the specified daily total load (7.2.4). The test procedures in this part of ISO 9459 do not require the solar water heating system to be subjected to freezing conditions. Consequently, the energy consumed or lost by a system while operating in the freeze-protection mode will not be determined. This part of ISO 9459 is limited to systems in which the solar collector and the storage tank are exposed to the same ambient conditions, and to systems in which the auxiliary energy (thermal or electric) can be monitored separately from the solar energy input. It is not intended to be used for testing the individual components of the system, nor is it intended to abridge any safety or health requirements.
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