The different energy source type influence on building primary energy needs

Abstract

The paper deals with the influence of different energy sources types on primary energy needs of a residential-business building with a total usable area of 1300m2 , which is located in Belgrade. The annual final energy consumption of the building, including energy for heating, cooling, ventilation, lighting and domestic hot water preparation, is calculated. The total energy needs of the building are calculated and compared for different energy sources. The impact of the applied energy source on primary energy needs is valuated. Different energy sources types, which are compared are as follows: district heating system that generates heat from fossil fuels, individual gas boiler for the building, local air conditioning units, heat pump, and solar heating systems for domestic hot water preparation, and furthermore their influence on primary energy needs of the building. The final energy consumption is calculated in accordance with International and European standards EN ISO 13790, EN 15316 and EN 15193. The energy savings that can be achieved by appropriate selection of energy source and the optimal energy solution are analyzed.