Estimate how long a time it will take to cool a trailer filled with coke ?(adsbygoogle = window.adsbygoogle || []).push({});

Given the ambient temperature is 22 degrees C and heat transfer provided by the refrigeration unit is 10 kW and the drinkable temperature is 4 degrees C. Make reasonable estimates of how much insulation is included on the walls of the truck. Assume an air flow velocity inside the truck of 0.1 m/s. Assume the sun is incident on the external surface of the truck for part of the time. Indicate any assumptions you make in your analysis. Take the properties of coke as: specific heat capacity 4200 J/kgK, density 1000 kg/m^3 and thermal conductivity of 0.6 W/mK.

6.1m X 1.6m X 1.5m or 20ft X 6ft X 5ft

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Heat Transfer Refrigeration Problem

**Physics Forums | Science Articles, Homework Help, Discussion**