Hi everybody,

I've made this post to know if you could help me with some orientation.

I want to develop a comparative analyse for two differents refrigerant for a cooling process (for LNG, criogenic process).

The effective phenomenon that cools the natural gas, in the heat exchangers, is the evaporation of the refrigerant.
The comparative analysis is suppose to compare the dynamic evaporation of propane, of a mixed refrigerent (composed of several compounds), and a mixed refrigerent with carbon nanotubes.

 

If some one can recommend a book or a study work that have been done to start my research, I would be very glad !

 

Thank you

 

Noel

Bit of a confusing post.

 

It's not feasible to refrigerate from ambient to typical LNG temperatures in a single stage. Typically we might employ three stages in cascade, each using a refrigerant appropriate for the temperature range of that stage. Hence we tend not to look at different refrigerants in isolation, but a system of refrigerants that complement each other, such as the propane-ethylene-methane system.

 

For instance, ethane isn't used, not because it's a poor refrigerant, but because it's an inefficient refrigerant for the temperature range between an economic propane expansion stage temperature and methane compression stage temperature.

 

There's a very good introduction to refrigeration processes in the GPSA Handbook.

Edited October 28, 20169 yr by sethoflagos