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> Testing >> Collectors >> Performance test

Collectors on the test rig – Performance

Collector performance is influenced by a wide range of parameters. In order for a system’s effective yield to be predicted these parameters must be known with accuracy. As a general rule the required accuracy can only be achieved by using outdoor measurements.

This is why SPF relies on several fully-equipped solar trackers. A solar simulator is also available for given measurements – in particular in the prototyping stage. A brief summary of the parameters developed for each collector (Solar Collector Factsheets) is available on our homepage. These performance indicators are also released in various formats on our SPF Info-CD, together with an exhaustive parameter statement and a collector yield calculator. 

  • Efficiency curve: efficiency in relation to collector temperature and solar radiation
  • Angle factor: efficiency in relation to radiation angle
  • Time constant/thermal capacity: how quickly a collector responds to changes
  • Pressure loss: pressure drop through the collector dependent on flow-rate.



To submit a quote we need full details of your collectors (collector questionnaire).


Order form / price list

collectorsnospam@nospam spf.ch

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