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    Cafeteria Night Consumption


    The consumption of the cafeteria from approx 7 pm to 5 am indicates the activity of multiple industrial refrigerators. There are probably three of them as the cyclical nature of the consumption indicates. The consistent cycle of spikes in consumption with breaks in between correlate with the defrosting of the fridges at night. The fridges heat up to minimize frost and ice but then cool down again to maintain temperature. In between each process the there is decrease in consumption. During the decrease in the consumption of one frige the graph allows us to see the cycle of another fridge that requires less energy and is therefore normally hidden below the most demanding frige. A second fridge is visible at around 9 pm, and then a third at 3:30 am.

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