ENV 12977-2:2001

Thermal solar systems and components - Custom built systems - Part 2: Test methods ENV 12977-2:2001

Publication date:   Aug 4, 2002

Scope

This European Prestandard applies to small and large custom built solar heating systems with liquid heat transfer medium for residential buildings and similar applications, and gives test methods for verification of the requirements specified in ENV 12977-1.
This Prestandard includes also a method for thermal performance characterization and system performance prediction of small custom built systems by means of component testing and system simulation.
Furthermore, the Prestandard contains methods for thermal performance characterization and system performance prediction of large custom built systems.
This European Prestandard applies to the following types of small custom built solar heating systems:
- systems for domestic hot water preparation only;
- systems for space heating only;
- systems for domestic hot water preparation and space heating.
This European Prestandard applies to large custom built solar heating systems, primarily to solar preheat systems, with one or more storage vessels, heat exchangers, piping and automatic controls and with collector array(s) with forced circulation of fluid in the collector loop.
This Prestandard does not apply to:
- systems with a store medium other than water (e.g. phase-change materials);
- systems for space heating with a distribution fluid other than water for the space heating subsystem (e.g. air systems);
- small custom built systems with a circulation line entering any store having a feedback on the solar heated store.
Principally, systems with circulation line may be tested in accordance to the methods described in this Prestandard, if the connecting port for the circulation line is kept closed during the tests. This should, however, stated in the test report.