Abstract
Currently available energetic evaluation methods for heat pump and micro-CHP systems lead to results which partly deviate strongly from field measurements. A new evaluation method based on the Hardware-in-the-Loop concept was therefore developed and tested in a research project. The method employs representative days. A procedure for determining the representative days is presented. The functionality of the concept could be proven in a round robin test and the energetic key figures can be confirmed by values from field measurements values.
Highlights
The evaluation of heat generation systems in the building sector is important for an objective energetic, ecological and economic comparison of competing heat generation concepts
Related to these systems the results of field tests show not negligible deviations regarding heat pump's seasonal coefficient of performance (SCOP) compared to values determined according to state-of-the-art standards and directives, which are based on static methods and simplified dynamic measurements
In order to arrive at practical values, a valuation procedure based on Hardware-in-the-Loop methodology (HiL) is developed in a joint research project of the TU Dresden, the RWTH Aachen University and the University of Stuttgart
Summary
The evaluation of heat generation systems in the building sector is important for an objective energetic, ecological and economic comparison of competing heat generation concepts. At the same time heat pumps and micro-CHP systems are becoming increasingly important in the context of changing energy supply structures Related to these systems the results of field tests show not negligible deviations regarding heat pump's seasonal coefficient of performance (SCOP) compared to values determined according to state-of-the-art standards and directives, which are based on static methods and simplified dynamic measurements (see [1]). One reason for this is the insufficient representation of real boundary conditions in the evaluation and calculation procedures. A proposal for an evaluation procedure derived from the results is explained
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