Commonly used condensants
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I need a low temperature of -10℃. What kind of condenser would be suitable?
There are many types of refrigerants, such as lithium bromide and liquid ammonia; they can generally be used to achieve temperatures of minus ten degrees
This post was last edited by wcb9706102 on 2009-12-31 14:45. Liquid nitrogen can be used to produce refrigerants; it is advisable to use coiled tubes in the reaction vessel during design, as this improves the efficiency of utilizing liquid nitrogen. However, given the conditions you mentioned as the poster – a low temperature of -10°C – the use of refrigerants is not recommended. After all, refrigerants are a non-renewable resource and their production cost is too high. It is advisable to use chilled brine for cooling; it’s quite easy these days to design systems that can achieve temperatures below -20°C with chilled brine
Freon and liquid ammonia both work. A refrigerant with a capacity matching the cooling demand is sufficient; an external circulation system can then be used, with ethylene glycol or calcium chloride solutions serving as the refrigerant. The former requires more stringent conditions for the equipment, while the latter demands careful preparation of the solution, as corrosion inhibitors need to be added.
Refrigerator using a mixture of ethylene glycol and water in combination with Freon
-At 10 degrees, I think using an expansion throttle should be sufficient to meet the requirements Cool down by using a sudden increase in pressure!
Commonly used ethylene glycol coolant: victory: