ALTENER Solar Keymark - WP1.C

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The Solar Keymark
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CE-marking of collectors?
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Altener Project: Solar Keymark - Work Package 1.C "Custom Built Systems"
Sub task leader: Jan Erik Nielsen, DTI, Denmark

Status of the implementation of the test procedures in ENV12977-2&3: 4 laboratories have implemented (some) of the ENV12977 test procedures and 3 labs are considering. Some of the laboratories will exclude some parts of the standards. To be able to label custom built systems with the Solar Keymark all requirements and tests stated in ENV12977-1 must be fulfilled (and EN status obtained). Some labs may only wish to label the components (store and controller). Still only a few comments and lessons learned from using the test procedures in the standards are given, as most of the laboratories have just started the implementation. However, some problems and suggestions were addressed:

  • Problem of two store test procedures
  • Time consuming store test procedures
  • Round Robin on thermal performance of stores missing
  • Methods for calculating measurement uncertainty still missing
  • Reporting format has to be fixed. Input from the participants welcome
In the case of ENV12977, more fundamental discussions have started in TC312/WG3 and decisions have to be taken before the actual revision and drafting can start - see: General comments to the standards (ENV12977-3)
  • Time consuming (DTI, SP)
  • Simplification wanted (IZES)
  • Good experience (ITW)
Specific comments to the standards (ENV12977-3)
  • p10: 0,05->0,1K; p12: control deviation of store inlet temp. 0,1K; p14: 0,02->0,05 K; p22: UA-method: fewer T-points, maybe only one heat loss coefficient necessary? (DTI)
   
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