» These places are open and receive a lot of people 12 hours per day
» They are empty during the night
» Heat load are directly linked to external conditions and the number of persons inside the building
» The air conditioning variation is high during the day
» Chillers capacity is reduced as part of the load is provided by the storage done during the night
» Smaller electrical installation
» Lower operating costs due to a reduction in peak utility usage, maintenance and more efficient use of chillers
» Less space required for cooling towers and chillers
Base assumptions :
» Office buildings are open from 8.00 am till 8.00 pm
» During the night, chillers are used for storing the cold.
» Cooling needs are covered by direct production associated with an Ice Spray system