The cargo space of a refrigerated truck whose inner dimensions are 12 m X 2.3 m, X 3.5 m i...

The cargo space of a refrigerated truck whose inner dimensions are 12 m X 2.3 m, X 3.5 m is to be precooled from 25°C to an average temperature of 5°C. The construction of the truck is such that a transmission heat gain occurs at a rate of 80 W/°C. If the ambient temperature is 25°C, determine how long it will take for a system with a refrigeration capacity of 8 kW to precool this truck.