Abstract: An adsorption separation unit and process. Valves are used to provide positive isolation between the various components of the unit, for example, when maintenance is required or when repairs are to be made. The valves comprises a first sealing element, a second sealing element and a bleed space between the sealing elements. A valve in a bleed line can be used to drain any fluid in the bleed space when the sealing elements are position in the sealing position.

Abstract: An auxiliary heating and cooling system for vehicles is provided wherein there are two alternative sources of primary thermal fluid, one being driven by the vehicle engine and the other by an electrical source separate from the vehicle, but both using the same secondary thermal fluid, operable under a lower pressure and being water based. Each of the primary fluids is alternatively connectable to a heat exchanger receiving the secondary fluid. The secondary fluid is connected to one or more fluid to air heat exchangers spaced as desired in the passenger compartment and to any internal container or constant temperature box heat exchangers, such as a refrigerator, as desired within the compartment. This invention permits use of modular components mounted from the exterior of the vehicle. Various fluid flow directional valves can be used as desired for flexibility in temperature orientation.