APPROACH NEAR ZERO ENERGY (NZEB) IN A MULTIFLATS BUILDING WITH RENEWABLE ENERGY CONTRIBUTION

Autor/autori: F. Bozzini, P. G. Anoaica


Abstract: This article presents the real case of a new multi-flat residential building designed to have very low energy consumption (NZEB - near zero energy building). This study shows the building-plant system behavior in according to year energetic consumption reduced by adopting a feasible system solution in terms of costs and benefits compared to a technologically advanced plant with condensing boilers. The plant engineering solution adopted is constituted by a hybrid system heat pump invertible air-cooled, high efficiency, integrated by a condensing boiler. It is important to note that the choice of this system solution is based on the installation of a renewable photovoltaic solar panels with stand alone connections such as to overcome the heat pump and domestic electric consumptions on condition that it can overcome to 60% of sanitary warm water consumptions and to 35% of the sum of the estimated consumption for heating, cooling and sanitary warm water. In each environment it is present the forced ventilation by means of a small fan unit equipped with a rotary enthalpy heat exchanger in order to obtain an excellent comfort and reducing energy consumption and maintaining constant low levels of CO2.

Keywords: near zero energy building, consumption, photovoltaic, energy, efficiency

 

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