摘要:
The invention relates to a method for cyclical operation of a thermoelectric cell arrangement by periodically changing the temperature of the thermoelectric cell arrangement, wherein the thermoelectric cell arrangement is thermally coupled to a cyclically operated absorption heat pump. The following method steps are carried out cyclically: thermally coupling the thermoelectric cell arrangement during a cooling phase to a cold side of the absorption heat pump, thermally coupling the thermoelectric cell arrangement during a heating phase to a hot side of the absorption heat pump. The invention also relates to a harvester device for generating electrical energy by means of a thermoelectric cell arrangement, wherein the thermoelectric cell arrangement is thermally coupled to an absorption heat pump, wherein the thermal coupling makes it possible to effect, in time with the working cycle of the absorption heat pump, a temperature change in the thermoelectric cell arrangement.
摘要:
The invention relates to a device for heating the heat engine (7) of a vehicle, comprising: a reactor (3) in which a reagent that can cause an exothermic reaction with a reaction fluid is disposed, a circuit (5) for supplying reaction fluid to the reactor (3), a heat-exchange circuit (8) between the reactor (3) and the heat engine (7) of the vehicle, and a circuit (9) for regenerating the reagent.
摘要:
A water desalination system including at least one pair of evaporators, said pair including a high pressure and a low pressure evaporator, each for evaporating saline water to produce water vapor; at least three adsorption beds in selective vapor communication with each evaporator, said adsorption beds arranged to reversibly adsorb the water vapor from the corresponding evaporator; said adsorption beds in selective vapor communication with a condenser, and in heat transfer communication with a heat source for selectively desorbing the adsorbed water vapor; said condenser arranged to condense the water vapor to desalinated water; wherein said system is arranged to sequentially connect, for a pre-determined period, each evaporator to a corresponding adsorption bed, and the heat source to the third bed.
摘要:
A high efficiency, low maintenance single stage or multi-stage centrifugal compressor assembly for large cooling installations. The assembly is highly efficient by virtue of a variable frequency drive (VFD) that drives a permanent magnet motor and matches compressor speed with compressor load, a direct drive impeller that eliminates gearing losses, and magnetic bearings that reduce frictional losses. The back-emf produced by the motor provides an intermediate power source for the magnetic bearings in the event of a loss of electrical power. A cooling system provides direct cooling of the rotor with gas refrigerant, and cooling of the stator with liquid refrigerant. Modular construction allows the compressor to be retrofit with upgrades. An inlet guide vane system operates without need for oil lubrication. The use of light metal castings and elimination of gearing reduces the weight to one-third or less of comparably powered conventional units.
摘要:
Es wird eine Haushaltsmaschine mit einer Kühleinheit vorgeschlagen, die erweiterte Möglichkeiten zur Wärmeausnutzung der für die Kühleinheit aufgebrachten Wärme als Prozesswärme im Arbeitsbetrieb der Haushaltsmaschine bietet. Dies wird erfindungsgemäß durch die Verwendung eines flüssigen Sorptionsmittels und/oder eines flüssigen Sorptionsmittel/Kältemittel-Gemisch erreicht.
摘要:
A thermal compressive device provides energy-efficient heating or cooling by exploiting heat regeneration in a sorption system. The device comprises an array of generator modules (7) arranged in two banks (10, 11) to either side of a heating zone (13). Heat carrier fluid is driven past the modules in a reversible direction. During one phase, generators in the first bank (10) are cooled and therefore in various stages of sorbate re-adsorption. Sorbate in associated evaporator region(s) (26) will boil, enabling cooling of surrounding fluid (33). Generators (7) in the other bank (11) will be in various stages of desorption. Sorbate in associated condenser region(s) (21) will condense, enabling heating of its environment. During the other phase, each generator (7) switches function, but cooling remains at evaporator regions (26) and heating at condenser regions (21). Each module may be a self-contained unit comprising generator (7), condenser (21) and evaporator (26) sections. In operation, the evaporator section (26) is arranged to be filled with condensed sorbate (28).
摘要:
The invention concerns the production of cold at TU by a reversible sorption system. The installation comprises a reactor (1) for reversible sorption between a gas G and a sorbent S, a device (2) for a reversible phenomenon involving the gas G, MEANS FOR communicating and or isolating means (2) and (1), the equilibrium curve of the reversible phenomenon in (2) being in a temperature domain lower than that of the equilibrium curve of the reversible sorption in (1) in the Clapeyron diagram. The device (2) contains, additionally to gas G, a liquid/solid phase-change material M having a solidification temperature TS lower than the working cold production temperature TU. The invention is useful for freezing various products or for producing cold water or ice cubes.
摘要:
A heat pump method and system with a pair of solid adsorbent beds connected to a heat pump loop and a reversible heat transfer loop. The heat transfer loop has a heater connected between one end of the beds and a cooling heat exchange connects the other end of the beds so that a heat transfer fluid flowing around the heat transfer loop heats one bed and cools the other.
摘要:
A process of adsorption or absorption is one wherein an azeotrope of n-propanol and water is absorbed by adsorbent e.g. a zeolite molecular sieve or absorbed by absorbent, e.g. aqueous lithium bromide thereby evolving heat of adsorption or heat of absorption.