One of the necessary steps to push solar cooling into the market is to define a suitable energy label. The bases for such a label are appropriate testing and rating procedures to which a labelling directive can refer to. Thus a valid and accepted standard for the measurement procedure and performance calculation of solar cooling systems is required. Many different rating methods are available in the field of solar heating and cooling. These comprise different methodical characteristics such as component testing and whole system testing, with the equipment under test measured under steady-state or dynamic conditions, measured in a laboratory, entirely indoor partly outdoor. The output of the measurement is some kind of description of the equipment under test such as performance points or parameters of a model that have been fitted and identified with the measurement data. Based on this input, several approaches for the performance calculation can be observed such as direct extrapolation, look-up tables, frequency distributions or full dynamic simulations. The aim of this paper is to develop a common language for the characteristics applied among the different rating methods in order to help people get acquainted more easily. Firstly general requirements for test and rating methods are brought up. Secondly a classification is proposed which comprises the main characteristics of testing and rating methods as well as options for each of these characteristics. Finally, the classification is applied on the most common European methods for solar heating and cooling systems.
Schicktanz, M. D., Schmidt, C., & Fedrizzi, R. (2014). Classification of rating methods for solar heating and cooling systems. In Energy Procedia (Vol. 48, pp. 1676–1687). Elsevier Ltd. https://doi.org/10.1016/j.egypro.2014.02.189