Abstract: Plural heat extraction arrangements are provided which are preferably associated with a separation vessel (50). The heat extraction arrangements can function in a vertical, horizontal, or any position between horizontal and vertical while receiving a refrigerant from a source unit (48) and a heat extraction substance supplied to at least one heat extraction arrangement by a device (90) for subjecting the refrigerant to a plurality of heat extraction steps, or relationships, for separating the refrigerant into a gas portion and a liquid portion. Traps 60 and 60' are provided for receiving the liquid portion to separate the liquid, as desired, from subsequent heat extraction steps. The liquid portion and a gas portion are separately discharged from the vessel.