Arefrigeration system to be installed must be capable of cooling 10,000 lbm of pork shoulder from 40 °f to 10 °f in 2 hours. the pork shoulder has a freezing point of 28 °f, water content of 73%, a specific heat above freezing of 0.86 btu/lbm-°f and below freezing of 0.53 btu/lbm-°f, and a thermal conductivity of 0.71 btu/hr-ft-°f. assuming atmospheric conditions, what is the required capacity of refrigeration system? use the latent heat of fusion for water (at 1atm), hf= 144 btu/lbm.