Dynamic whole system testing of combined renewable heating systems: the current state of the art
2013 (English)In: Energy and Buildings, ISSN 0378-7788, E-ISSN 1872-6178, Vol. 66, 667-677 p.Article in journal (Refereed) Published
Objective: For the evaluation of the energetic performance of combined renewable heating systems that supply space heat and domestic hot water for single family houses, dynamic behaviour, component interactions, and control of the system play a crucial role and should be included in test methods.
Methods: New dynamic whole system test methods were developed based on “hardware in the loop” concepts. Three similar approaches are described and their differences are discussed. The methods were applied for testing solar thermal systems in combination with fossil fuel boilers (heating oil and natural gas), biomass boilers, and/or heat pumps.
Results: All three methods were able to show the performance of combined heating systems under transient operating conditions. The methods often detected unexpected behaviour of the tested system that cannot be detected based on steady state performance tests that are usually applied to single components.
Conclusion: Further work will be needed to harmonize the different test methods in order to reach comparable results between the different laboratories.
Practice implications: A harmonized approach for whole system tests may lead to new test standards and improve the accuracy of performance prediction as well as reduce the need for field tests.
Place, publisher, year, edition, pages
Elsevier, 2013. Vol. 66, 667-677 p.
Engineering and Technology
Research subject Energi, skog och byggd miljö, MacSheep
IdentifiersURN: urn:nbn:se:du-12747DOI: 10.1016/j.enbuild.2013.07.052ISI: 000327904200071OAI: oai:DiVA.org:du-12747DiVA: diva2:639164