A method and device for cooling and/or heating media, preferably in a motor vehicle, the method in which at least one first heat source is cooled and at least one second heat sink is heated by a thermal management system. In a method in which the heating or cooling can occur on demand, heat and/or cold are shifted by the thermal management system in space and time to the heat sink and/or heat source, which is characterized by need.

A thermodynamic system for powering a reciprocating device includes a refrigerant passing in a closed loop between a refrigerant compressor, a condenser, an expansion valve, and an evaporator. The system includes a heat source for heating the refrigerant, and an engine for receiving the heated refrigerant. The engine includes a housing, a shaft axially movable within the housing, a piston attached to the shaft, a shifter for reversing piston direction, and porting for passing the refrigerant into and out of the engine housing.

A system for producing a heat source for heating or electricity, using medium/low-temperature waste heat includes: an absorption-type heat pump (100) supplied with a driving heat source and heat source water to heat a low-temperature heat medium; a regenerator heat exchange unit (210) for supplying a regenerator (110) with a driving heat source using waste heat; an evaporator heat exchange unit (220) for supplying an evaporator with heat source water; a heat medium circulation line (310) for circulating a heat medium; a generation unit (400) branching off from the heat medium circulation line (310) and producing electricity; a heat production unit (500) branching off from the heat medium circulation line (310) and supplying a heat-demanding place with a heat source for heating; and a switching valve unit (600) for controlling the flow of heat medium supplied the generation unit (400) or the heat production unit (500).

A heat exchanger includes an inner tube extending along a central axis, an array of a plurality of heat transfer members mounted to the inner tube, and a plurality of outer tubes disposed radially outward of and in parallel relationship to the inner tube, the inner and outer tubes extending longitudinally to pass through the array of heat transfer members. The heat exchanger is particularly suited for use as an engine exhaust cooler in connection with a transport refrigeration unit, wherein the inner tube defines an internal flow passage through which engine exhaust gas passes, each outer tube defines an internal flow passage through which refrigerant passes, and the plurality of flow passages between adjacent heat transfer members defines an air flow passage. In an embodiment, the heat transfer members may be annular disks having an internal chamber filled with air or other heat transfer working fluid.

An absorption refrigeration and air conditioning device capable of controlling temperature and/or the humidity of enclosed spaces particularly useful in maritime applications and improving fuel economy of internal combustion engines is provided.

Technologies are described herein for cooling systems. In some aspects, a cooling system is configured to enter into a storage configuration or a winterization configuration. In the winterization configuration, refrigerant used in the cooling system is stored in an adsorbent in an adsorbent chamber.

A method of operating a heating, ventilation, and/or air conditioning (HVAC) system includes operating a device to produce at least one of electricity and rejected heat and at least one of (1) powering a component of the HVAC system using the electricity produced by the electricity generating device and (2) heating the refrigerant of the HVAC system using at least a portion of the rejected heat.

A gas heat pump system is disclosed. The gas heat pump system includes an air conditioning module including a compressor, an outdoor heat exchanger, an expansion device, an indoor heat exchanger and a refrigerant pipe, an engine module including an engine configured to burn a mixture of fuel and air and provide power for operation of the compressor, a cooling module including a cooling water pump configured to generate flow of cooling water for cooling the engine and a cooling water pipe connected to the cooling water pump to guide flow of cooling water. The engine module includes a mixer configured to discharge the mixture of air and fuel to the engine, a supercharger disposed between the mixer and the engine to compress the mixture discharged from the mixer and discharge the mixture to the engine, and an adjuster disposed between the supercharger and the engine to adjust an amount of compressed mixture supplied to the engine.

Technologies are described herein for cooling systems. In some aspects, a cooling system is configured to enter into a storage configuration or a wintenzation configuration. In the wintenzation configuration, refrigerant used in the cooling system is stored in an adsorbent in an adsorbent chamber.

A method of generating electric power includes expanding a flow of exhaust gas from a combustion process as the exhaust gas passes through a turbo-expander disposed on a turbo-crankshaft. The flow of exhaust gas from the turbo-expander is routed through an absorber section of an open cycle absorption chiller system. Water from the exhaust gas is absorbed via a first refrigerant solution disposed in the absorber section as the exhaust gas passes through the first refrigerant solution and out of the absorber section. The flow of exhaust gas from the absorber section is compressed as the exhaust gas passes through a turbo-compressor disposed on the turbo-crankshaft. Electrical power is generated from a bottoming cycle generator disposed on the turbo-crankshaft.