Normalized heating energy consumptions of 1,126 schools. The arithmetic mean is 117 kWh/(m²a), the 25 % standard is 56 kWh/(m²a).
© ages, consumption data 1996

Normalized electricity consumption of 861 schools. The arithmetic mean is 13 kWh/(m²a), the 25 % standard is 4 kWh/(m²a).
© ages, consumption data 1996

Heat losses of a school building
© Gertec
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Schools as energy consumers

Every construction epoch has also left its school buildings, e.g. buildings from the Victorian period, post-war buildings, reinforced concrete construction techniques and industrial concrete-slab buildings. These buildings differ considerably in energy consumption, e.g. with respect to heat requirements, incidence of daylight and heating systems. The different school concepts also exert a great influence, e.g. all-day schools, and other users of the buildings (evening classes, clubs). All energy projects are influenced by these different prerequisites, and this must be taken into account in comparing schools. Figs. 2 and 3 provide a guideline for the evaluation of one’s own results. In this study, the data from schools with low conconsumption are overrepresented since they more frequently have precise consumption statistics. A good result is understood to be energy consumption by a school within the best 25 % (standard).

Fig. 4 shows where the heat losses of a typical school building are to be found. The energy consumption of a school consists of 85 % - 95 % for heating and 5% - 15 % for electricity; heat contributes 60 % - 80 % to the energy costs and electricity 20 % - 40 % (as of 1999).



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