Carbon Dioxide Refrigeration

[Samarjit Sen]

What is the lowest temperature one can achieve with CO2. Are their any literatures on these systems. What I understand that onle CO2 can be used as a refrigerant for a single stage compressor. Could you please provide me with some information on this.

[US Iceman]

CO2 for phase change is limited to about -67F (-55C) if I remembered the triple point correctly.

[Josip]

Hi, Samarjit Sen

What is the lowest temperature one can achieve with CO2. Are their any literatures on these systems. What I understand that onle CO2 can be used as a refrigerant for a single stage compressor. Could you please provide me with some information on this.

Can you explain this, please?

The Sabroe CO2/Ammonia Freeze Package (CAFP) concept combines the advantages of CO2 on the low-temperature side and ammonia on the high-temperature side.

A CO2 compressor has a capacity 8–12 times greater than a similar ammonia unit, making the low-temperature compressor much smaller, and the whole unit significantly more compact.

CO2/Ammonia Freeze Package (CAFP) equipment is available with capacities of 80–400 kW at -50°C or 140–650 kW at -40°C.

Please follow this link:

http://www.sabroe.com/fileadmin/file...CAFP_06.03.pdf
http://docnav.grasso-global.com/DocN..._gbr_10-04.pdf

Best regards, Josip