The Advisability of Employment of Renewable Energy Sources in DHW Systems in the Kindergarten
Dorota Krawczyk , Antonio Rodero , Agata Witkowska , Bernadetta Wądołowska
AbstractThis research aims to show the advisability of usage of selected renewable energy sources for domestic hot water (DHW) installations in buildings located in Poland and Spain. The analysis was conducted for a typical kindergarten, an example of buildings with high density of people and stable profile of usage, as opposed to schools which are closed during summer holidays. We took into account national regulations to estimate heat demand. Then applying solar collectors and heat pumps to use as a monovalent energy sources were considered. The total cost of the system with solar collectors in Poland was found to be 1.4 times higher than in Spain, whereas the difference in a case of air heat pumps was 18%. Moreover efficiency of solar collector and heat pump systems were found as 49.56% for Warsaw, 52.29% for Madrid with coefficient of performance (COP) 2.2 and 2.55 respectively, therefore simple payback time (SPBT) of investment was estimated in a range between 6–12 years for solar collectors and 5–6 years for heat pumps.
|Journal series||Proceedings, ISSN , e-ISSN 2504-3900, (0 pkt)|
|Publication size in sheets||0.3|
|Conference||Innovations-Sustainability-Modernity-Openness Conference (ISMO'19), 22-05-2019 - 23-05-2019, Białystok, Polska|
|Keywords in English||heat pumps; solar collectors; renewable energy; DHW|
|Internal identifier||ROC 19-20|
|License||Journal (articles only); published final; ; with publication|
|Score||= 5.0, 12-02-2020, ArticleFromJournal|
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