If carbon dioxide is cooled at 1 atm, it condenses directly to a solid (dry ice) at
Chapter 8, Problem 8.49(choose chapter or problem)
If carbon dioxide is cooled at 1 atm, it condenses directly to a solid (dry ice) at 78.4C. The heat of sublimation at this temperature is H^sub(78.4C)=6030 cal/mol. (a) Calculate the heat removal rate (kW) required to produce 300 kg/h of dry ice at 1 atm and 78.4C if CO2(v) at 20C is the feed. (b) Suppose the process is carried out at 9.9 atm instead of 1 atm with the same initial and final temperatures. Referring to Figure 6.1-1b, write an expression for the required heat removal rate in terms of heat capacities and latent heats of CO2 in different phases.
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