Talk:Dust/@comment-67.140.221.145-20160921190854/@comment-25396609-20160922161750

A refrigerator moves gas through a tube which gradually widens, causing it to expand and cool; absorbing thermal energy from inside the box. It is then moved to the exterior where the pipe narrows sharply, causing the heat to be squeezed out of the gas.

The same basic concept could in theory be applied to lava generated by dust, moving the heat out of it by compressing it to cause it to cool rapidly.