| 20100071393 | LIFE SUPPORT SYSTEM - A life support system includes a refuge housing and a cooling system. The cooling system, which has a supply of liquefied gas and a cooling circuit, is operatively associated with the refuge housing. The supply of liquefied gas is operatively associated with the cooling circuit that contains a heat exchanger, a fan motor and a fan operatively associated with the fan motor. A conduit connects the heat exchanger to the fan motor that is driven by waste gas generated through a phase change of the liquefied gas in the heat exchanger. | 03-25-2010 |
