Liquefied gas refrigerants
TL;DR
Liquefied gas refrigerants - requires enrichment with adjacent possible narrative
Linde's "new process made possible using gases such as ammonia, sulfur dioxide (SO2) and methyl chloride (CH3Cl) as refrigerants and they were widely used for that purpose until the late 1920s."
What Had To Exist First
Preceding Inventions
Required Knowledge
- Cooling
Biological Patterns
Mechanisms that explain how this invention emerged and spread: