A new calculation procedure to analyse the energy consumption of air handling units

Abstract

According to Directive 2002/91/EC on the energy performance of buildings (EPBD) it is important to determine the expected energy consumption of buildings in the designing phase. The existing national and international regulations are inadequate regarding methods to calculate the energy consumption of air handling units. The actual calculation methods are fairly inexact approximations producing a single figure for the monthly energy consumption using average temperature or average enthalpy which only approximately take into account the changing of ambient air. A new calculation procedure was developed to provide a more accurate analysis of the energy consumption of air handling systems and to remedy the above mentioned inadequacies.