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Design and Simulation of an Energy-Positive Building

Authors:
Catalina Tiberiu
Popescu Razvan
Soare Martha
Serban Ovidiu
Bajenaru Nicolae

Keywords: positive energy house; dynamic simulations; multi-source system.

Abstract:
This article presents the results from a simulation work regarding the analysis of energy balance of an positive energy building. To meet the criteria for an energy-positive house, a high priority was given to the performance of the thermal envelope, such as high insulation of walls, roofs, floors and windows, thermal bridge-free construction and air tightness. Due to the required air tightness, special attention was also paid to indoor air quality through proper ventilation. We have simulated the building and the heating/cooling system which in our case is a water source heat pump connected with U-pipes vertical boreholes. With the geothermal system, along with solar thermal system used to produce the domestic hot water demand and along with the photovoltaic-PV system we managed to obtain a positive energy construction. The multi-source system is simulated with multiple specialized software. The installed PV system produces 5379 kWh/year while the energy consumption of the house is 4856 kWh/year. During summer, in order to avoid overheating a set point of 27oC was considered. For the entire simulation year, the interior temperature in all the zones was between 19oC and 27oC. This article presents the modeling and simulation of the multi-source systems and illustrates interesting insights about the right measures to obtain a high energy efficient house with optimum indoor comfort.

Pages: 193 to 198

Copyright: Copyright (c) IARIA, 2013

Publication date: October 27, 2013

Published in: conference

ISSN: 2308-4537

ISBN: 978-1-61208-308-7

Location: Venice, Italy

Dates: from October 27, 2013 to October 31, 2013