Envisaged is a regeneration system for a metal hydride heat pump of a damper type. The system comprises a plurality of reactor assembly modules configured to act as a heat pump, an ambient air inlet and a fluid recirculation circuit. The plurality of reactor assembly modules includes first, second, third and fourth metal hydride reactor assembly modules. The fluid recirculation circuit comprises a mixer, a fluid stream switching means, a flow regulating means and an exhaust out let. The mixer is adapted to mix a portion of a recirculation stream received from the exhaust outlet and the exhaust gas stream to provide a resultant stream. The fluid stream switching means is coupled to the mixer and is adapted to switch flow of the resultant stream as received from the mixer and the ambient air stream in a cyclic manner in a series of half-cycles of operation.

A transport refrigeration system (TRS) and method of operating a TRS having a sorption subsystem are disclosed. The TRS includes a refrigeration subsystem and a sorption subsystem. The refrigeration subsystem includes a refrigerant, a compressor, a refrigerant condenser, a refrigerant expansion device, and a refrigerant evaporator in fluid communication such that the refrigerant can flow therethrough. The sorption subsystem includes a heat transfer fluid, a heat source, a boiler, a sorption condenser, a sorption expansion valve, a sorption evaporator, and a pump in fluid communication such that the heat transfer fluid can flow therethrough. The sorption evaporator is in thermal communication with the refrigeration subsystem.

A self-cleaning metal hydride heat recovery system comprising a thermally insulated housing partitioned into at least two thermally insulated chambers, each chamber enclosing a metal hydride reactor assembly containing a regenerating, high-temperature metal hydride alloy, an ambient air inlet adapted to receive an ambient air stream into the housing to be fed to at least one of the two thermally insulated chambers, a fluid recirculation circuit configured to recirculate an exhaust stream as received from an exhaust source, the fluid recirculation circuit comprises a mixer adapted to mix a portion of a recirculation stream and the exhaust stream to provide a resultant stream, fluid stream switching means coupled to the mixer and adapted to switch flow of the resultant stream and the ambient air stream in a cyclic manner, flow regulating means provided downstream of the metal hydride reactor assemblies, and an exhaust outlet.

A refrigeration apparatus includes a refrigeration enclosure comprising outer walls defining a hermetic interior refrigeration chamber, and a porous thermally conductive foam insert within the chamber. A desiccant enclosure includes outer walls defining a hermetic interior desiccant chamber, and a desiccant within the desiccant chamber. A fluid conduit establishes a fluid connection between the refrigeration chamber and the desiccant chamber. A control valve controls the flow of a fluid through the fluid conduit. The refrigeration enclosure and an article to be refrigerated can be placed within an outer thermally insulated cooler. A method of refrigerating an article and a human-powered refrigeration system are also disclosed.

A valve for an adsorption heat pump may be adjustable between a closed position, a first open position, a second open position, and at least one intermediate position. The valve may include a first channel, a second channel, a third channel, a first valve unit, a second valve unit, and a spring element providing a closing force upon the first valve body and the second valve body. The valve may also include an actuating drive configured to hold the valve in position without power. The actuating drive may include a stepping motor and a gear unit constructed and arranged to hold the valve in position via a currentless holding moment. The first valve unit and the second valve unit may have a valve opening characteristic of a flow coefficient dependent on an adjustment path that is not linear. The valve opening characteristic may include at least one flat region.

A low-temperature quick-freezing freeze-drying system provided by the invention includes: a compressor unit, a first heat exchanger, an air cooler, a second heat exchanger, a throttling element, a third heat exchanger, a circulating fan, a drying chamber, a third valve, a fourth valve and connecting pipelines, and the above elements form a refrigeration circulation loop, a quick freezing/freeze-drying circulation loop, and a desorption drying circulation loop, thereby realizing the low-temperature quick-freezing and freeze-drying of materials. The invention adopts the heat exchangers with a cold storage function, so that the refrigeration capacity of the compressor is stored and used intensively to achieve rapid cooling of the materials.

An arrangement may comprise a first and a second heat tank, a thermochemical reactor which is thermally and fluidically connected to the heat tank, a heat transfer fluid circuit containing a heat transfer fluid for transporting heat between the two heat tanks and the thermochemical reactor, a temporary heat store arranged in the heat transfer fluid circuit for temporarily storing the heat transfer fluid. The temporary heat store may be for receiving the heat transfer fluid has two different temperature levels. The temporary heat store may comprise a first partial store with a variable storage volume and a second partial store with a variable storage volume. The variable storage volume may be thermally and fluidically separate from the first. A valve system may be located in the heat transfer fluid circuit. The heat transfer fluid circuit may comprise at least one movable valve device, by which the heat transport between the two heat tanks, the thermochemical reactor and the temporary heat store can be controlled by the heat transfer fluid.

An adsorption heat pump may include a high temperature circuit for a high temperature heat transfer medium, a medium temperature circuit for a medium temperature heat transfer medium, and at least one sorption module in operative communication with the high temperature circuit and the medium temperature circuit. The at least one sorption module may include a sorption zone, a phase change zone, a working medium, a sorbent which may absorb and desorb the working medium, a first flow channel thermally contacting the sorbent, and a second flow channel thermally contacting the phase change zone. A first valve and a second valve may be in operative communication with the sorption module, the high temperature circuit, and the medium temperature circuit. The first valve and second valve may be configured to move between a closed position, a first open position, a second open position, and at least one intermediate position.

An adsorption heat pump includes: an evaporator/condenser including a section that evaporates a first heat exchange-medium and pipe through which a second heat exchange-medium flows; first adsorption devices, each including an adsorption-section in which the first heat exchange-medium that has been evaporated reacts and retains the first heat exchange-medium, and pipe through which the second heat exchange-medium flows; and second adsorption device in which first heat exchange-medium that has been released from the first adsorption devices reacts and retains the first heat exchange-medium. The adsorption-section of the first adsorption device in a state reacting with the first heat exchange-medium is in communication with the evaporator/condenser section, and the adsorption-section of the first adsorption device is in a state having adsorbed the first heat exchange-medium is in communication with the second adsorption device adsorption-section, and the first adsorption device pipe is connected to the evaporator/condenser pipe in series, thereby generating cooling.

An adsorption refrigerator comprising a first adsorber containing a first adsorbent capable of adsorbing and desorbing a first adsorbent refrigerant, a second adsorber containing a second adsorbent capable of adsorbing and desorbing the first adsorbent refrigerant, a first evaporator capable of evaporating the first adsorbent refrigerant under reduced pressure to cool a first working fluid, a first condenser capable of condensing the first adsorbent refrigerant in gaseous state, a third adsorber containing a third adsorbent capable of adsorbing and desorbing a second adsorbent refrigerant, a fourth adsorber containing a fourth adsorbent capable of adsorbing and desorbing the second adsorbent refrigerant, a second evaporator capable of evaporating the second adsorbent refrigerant under reduced pressure to cool a second working fluid, a second condenser capable of condensing the second adsorbent refrigerant in gaseous state, a first heat exchanger capable of applying heat absorbed from a first heat source to a first heating medium, a second heat exchanger capable of removing and releasing heat from a second heating medium, and a heat recovery path where a third heating medium performs recovery of adsorption heat generated by adsorption-driving of the first adsorber or the second adsorber and performs heat application of regeneration-driving of the third adsorber or the fourth adsorber.