PhD Thesis - Energy Systems Research Unit - University of Strathclyde

Fig. 2.16 - Electrical demand profile for all households (August)Fig. 2.17 - Electrical demand profile for all households (February)As can be observed from the two sets of figures, the daily electrical demand profilevaries on a seasonal basis. Similarly to Figure 2.8, where the effect of seasonalvariability was shown for different appliances for the same household, Figure 2.18shows the daily electrical energy consumption calculated for the three households ona monthly basis. Excluding HVAC loads (in this analysis HVAC loads are beingtreated as a separate load which is catered for by the ‘waste heat’ recovered from themicro-trigeneration system), it can be observed that the annual electrical energyconsumption modelled to represent demand in residential buildings in southernEuropean countries is not particularly different from the annual consumptionmodelled for other European residential buildings; a high winter demand, a lowsummer demand and an intermediate demand during the shoulder months [27].62