Yearly Electrical Energy Assessment of a Photovoltaic Platform/Geothermal Heat Pump Prosumer

Macedon Moldovan, Bogdan-Gabriel Burduhos and Ion Visa
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Macedon Moldovan: Renewable Energy Systems and Recycling Research Centre, Transilvania University of Brasov, 500036 Brașov, Romania
Bogdan-Gabriel Burduhos: Renewable Energy Systems and Recycling Research Centre, Transilvania University of Brasov, 500036 Brașov, Romania
Ion Visa: Renewable Energy Systems and Recycling Research Centre, Transilvania University of Brasov, 500036 Brașov, Romania

Energies, 2021, vol. 14, issue 13, 1-18

Abstract: Romania introduced in 2018 an amendment to the national law 220/2008 by including the Prosumer concept that allows investors in grid-connected photovoltaic systems with a capacity up to 27 kWp to receive a feed in tariff for the electricity delivered to the grid representing approximatively one third of the price paid when the electricity is consumed from the grid. Thus, the challenge is to use as much as possible the photovoltaic power when it is produced. A methodology is developed to evaluate how much of the electrical energy output of a grid-connected photovoltaic platform is used by a geothermal heat pump for space heating in a building. A numerical simulation is performed in Trnsys17 based on locally measured meteorological parameters over a period of one entire year. A case study is presented for which the characteristics of the building, of the heat pump system and of the photovoltaic system are described and integrated into the transient simulation environment. The numerical results are comparatively presented and discussed along with experimental data for sunny days in cold season. For the analysed case study, the self-consumption is 16%, significantly lower than the yearly coverage degree of 70%. Further research can be done to increase the self-consumption.

Keywords: renewable based energy mix; heat pump; photovoltaic system; prosumer; self-consumption (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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