The most important standard for collector testing in Europe is the EN 12975:2006 which is applied in all the major laboratories and is the reference for the Solar Keymark certification. Besides the steady-state method, the EN 12975 allows the application of the quasi-dynamic method performed outdoors in natural conditions with variable.
What is the best standard for solar collector testing in Europe?
The most important standard for collector testing in Europe is the EN 12975:2006 which is applied in all the major laboratories and is the reference for the Solar Keymark certification.
What is a dynamic solar collector test?
An improved dynamic solar collector test method for determination of non-linear optical and thermal characteristics with multiple regression. Solar Energy 1997. 59 (4-6):163-178.
What are the characteristics of a solar collector?
They treat the solar collector as a homogeneous body and they are based on four parameters that are considered characteristic: thermal capacity, heat removal coefficient, thermal efficiency coefficient and heat loss coefficient.
Is a solar collector a fixed object?
As already mentioned, the solar collector is a non-fixed object, whose characteristic parameters depend on the operating conditions.
Which methods are used to determine the efficiency of a collector?
When considering the parameters of a collector determined during standard tests (ISO 9806 indoor) as reference values, it shall be noticed that the most similar results concerning efficiency were produced using the ISO 9806 outdoor and the ETN methods.
Do solar collectors have static and dynamic properties?
The proper determination of the static and dynamic properties of a solar collector is of key significance, as they constitute a basis for the design of a solar heating installation, as well as a control system.