Abstract: A method for conditioning water vapor bearing compressed air for supply as conditioned air to an enclosure includes the steps of flowing the compressed air into a condenser-evaporator heat exchanger and then cooling the compressed air with a liquid evaporating refrigerant in the condenser-evaporator. Thus, the water vapor in the compressed air can become condensed liquid water available for subsequent separation to form a dehumidified air. The dehumidified air undergoes reheating with a vapor condensing refrigerant in a reheater-condenser such that the dehumidified air becomes a reheated air. The reheated air is then routed through a turbine to provide the supply to the enclosure. An apparatus is also provided for accomplishing the above steps and includes a condenser-evaporator heat exchanger capable of placing the compressed air in heat exchange relationship with a vapor cycle subsystem.

Abstract: An integrated system for removal of CO.sub.2 from and thermal conditioning of a gas mixture is disclosed. A pair of regenerating chemically impregnated molecular sieve absorption beds are used for removal of the CO.sub.2. A heat exchanger used in the thermal conditioning subsystem also heats the gas used to regenerate the beds and cools absorption gas. A recirculation fan moves the gas mixture throughout the entire thermal conditioning and gas purification system.