Abstract
Due to a technologic progress, a growth in the renewable energy markets including a high number of manufactures coming to being, the Renewable Energy Sources (RES) are both a tool for mitigating climate changes and investments that can provide direct economic profits and reduce a political or economic dependence resulting from import of fossil fuels. One of the many key solutions toward fulfilling the global increasing demand for energy and reduction of CO2 emissions is applying solar technologies. This paper presents the results of the analysis conducted for a small public office building located in Bialystok (Poland), where solar collectors were considered as the RES for domestic hot water (DHW) system, on the understanding that existing oil boiler would be an additional source. Low values of recommended water consumption in office buildings resulted in a low energy demand. However, concerning a potential of all office governmental buildings in Poland, it would be possible to reduce CO2 emission by 17,248 tonnes. In the comprehensive analysis, the same building in two more locations (Cordoba (Spain) and Kaunas (Lithuania)) was considered using simulation tools delivered within the framework of VIPSKILLS project as well as EnegyPlus software. The results allow to compare the mean monthly efficiency of systems or number of collectors necessary to deliver similar amount of solar energy.
Highlights
Global energy demand has been increasing due to a growing urban population; it is worthy to highlight that improved energy access is a crucial means of advancing the quality of life and socioeconomic status of a country’s growing population that could improve the citizens’ contribution to economic growth and environmental sustainability (Elum et al 2017)
Theoretical hot water and energy consumption in the analyzed building for all locations was estimated in a range from 162 dm3/day in Spain to 378 dm3/day in Poland and Lithuania, so the obtain results indicate the solar collector system similar to family houses
Energy demand for domestic hot water (DHW) in Cordoba was found 2.9–3.5 times lower, as a result of lower water consumption per person recommended by the national regulation (IDEA 2009) and significantly higher temperature of network water (Fig. 3)
Summary
Global energy demand has been increasing due to a growing urban population; it is worthy to highlight that improved energy access is a crucial means of advancing the quality of life and socioeconomic status of a country’s growing population that could improve the citizens’ contribution to economic growth and environmental sustainability (Elum et al 2017). Renewable energy sources (RES) play a key role in a sustainable economic growth and help to meet the increasing energy demand. They conduce to a reduction of CO2 emissions that are primarily generated through the Responsible editor: Philippe Garrigues. There are variety of factors, including a local solar radiation, a technology progress, costs, local manufactures’ engagement, an economic government
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