Thursday, July 8, 2010

Planning for 2000 liquid nitrogen slushies

I have always loved math but sometimes the numbers are overwhelming. It starts with a simple recipe: 3 oz of fruit syrup strawberry or mango, 3 oz of apple juice and 4 ounces of water. Add 6 ounces of liquid nitrogen and top with .2 oz sweetened condensed milk. Serve in a corn based recycled cup with a jumbo straw. Now multiply by 2000. That would be roughly 25 gallons each of fruit puree, 50 gallons of apple juice and about 65 gallons of water. Each 220 liter tank of nitrogen has 58 gallons but the nitrogen is always evaporating. If my tanks are delivered today, how much will be left for the event?94 gallons times the evaporation rate in the dewar times the number of hours, to be on the safe side I will order 3 tanks. Straws and cups are easy, just need to think about the environmental impact. 4 gallons of sweetened condensed milk. Now how many people do I need??

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