E3S Web Conf.
Volume 70, 201817th International Conference Heat Transfer and Renewable Sources of Energy (HTRSE-2018)
|Number of page(s)||6|
|Section||Renewable Energy Sources and Energy Storage|
|Published online||03 December 2018|
The possibility of achievement of the nZEB state of a refurbished detached house powered solely by renewable energy sources in Southern Poland
AGH University of Science and Technology, Dep. of Energy and Fuels, Al. Adama Mickiewicza 30, PL- 30-059 Cracow, Poland
* Corresponding author: email@example.com
This paper gives a thorough description of the two different scenarios of retrofit of an existing detached country house (with high primary energy demand) to a net zero energy building (nZEB) or near zero energy (nearZEB) by using energy form on-site RES. Using a designed piece of modelling software author pointed out two possible solutions. First one, based on a bio boiler and small on-site PV generator (on-grid) and the other based on large PV generator and three heat pumps. A 24 months test was performed in order to find out the output of both scenarios. In first period, the bio boiler delivered energy for space heating and DHW, while energy from PV was used to cover all electricity needs of the household during the 12 months testing period. In the later, the energy received from 10 kWp PV of was partly used to cover the current needs of the entire household (switchable on/off-grid system), and surplus was stored in the national electricity grid and regained later in the winter for the space heating (by a GSHP) and ventilation (ASHP) and DHW (dedicated ASHP). In both cases the system proofed the possibility to achieve the nZEB (nearZEB in first scenario) state of the household, as all (in the first near all) energy needs were covered by renewable energy produced on-site.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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