- #1
SupaVillain
- 48
- 2
http://www.pbs.org/wgbh/nova/physics/reaching-ultra-low-temperatures.html
is this thing accurate? It uses methylene chloride as first refrigerant, then ethene, and then oxygen, and gets to liquefy air...down to 70kelvins
after researching the very small info on the net about cascade refrigeration systems, this is the only source that says one can get down to liquefying air. In the dewars process i believe the lowest temperature needed is 77kelvins or 192 celsius. I'd love to know if this is possible since cascade cooling seems the easiest and cheapest process for cryogenics.
is this thing accurate? It uses methylene chloride as first refrigerant, then ethene, and then oxygen, and gets to liquefy air...down to 70kelvins
after researching the very small info on the net about cascade refrigeration systems, this is the only source that says one can get down to liquefying air. In the dewars process i believe the lowest temperature needed is 77kelvins or 192 celsius. I'd love to know if this is possible since cascade cooling seems the easiest and cheapest process for cryogenics.