The invention relates to a system for pumping a refrigeration mixture for absorption heat pump generators, comprising a support which integrates a membrane pump and a hydraulic pump for actuating the membrane pump in a single component, and using the driving feedback signals of the actuator motor, determines the existing fluid-dynamic conditions during the operation of the heat pump.

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 solar powered absorption cooling system employing refrigerant-absorbent solutions such as water and lithium bromide and hybrid storage capabilities, and a method of employing the system in refrigeration and air conditioning units. The system includes a first temperature control valve and second temperature control valve that together regulate the flow of solar heating fluid into the generator and substantially reduce absorbent crystal formation.

A heat transfer method uses a heat transfer system including: a heat source unit in which heat is exchanged between a heat transfer medium and a heat source; a utilization unit in which heat is exchanged between the heat transfer medium and a temperature adjustment target; and a first flow path and a second flow path that connect the heat source unit and the utilization unit. The heat transfer medium flows through the first flow path from the heat source unit to the utilization unit, and flows through the second flow path from the utilization unit to the heat source unit. In the heat transfer method, inorganic hydrate slurry, in which an inorganic hydrate that absorbs heat when dissolved in water is mixed with water, is used as the heat transfer medium.

Disclosed are systems and methods of rapidly cooling thermal loads by providing a burst mode cooling system for rapid cooling. The burst mode cooling system may include a complex compound sorber configured to rapidly absorb ammonia. The system may be used to provide pulses of cooling to directed energy systems, such as lasers and other systems that generate bursts of heat in operation.

Technologies are described herein for cooling systems. In some examples, a cooling system uses cooling cells to provide cooling to a space. The cells can include one or more adsorption chambers, whereby an adsorbent in the adsorption chamber causes a refrigerant (such as water) to evaporate. The action of evaporation removes heat from a cooling fluid, which is used to cool the space.

A heat exchanging device includes a regenerator that heats an absorbent by external energy and generates a vapor refrigerant by evaporating a refrigerant from the absorbent, a condenser that generates a liquid refrigerant by cooling and liquefying the vapor refrigerant, an evaporator that generates a vapor refrigerant by vaporizing the vapor refrigerant, an absorber that absorbs the liquid refrigerant into the absorbent, and first and second cover members arranged opposite to each other. The evaporator absorbs heat from a space on a second cover member side in a space between the first and second cover members through the second cover member. The absorber dissipates the heat from a space on a first cover member side in the space between the first and second cover members through the first cover member, and circulates the refrigerant and the absorbent.

The present invention concerns a method of refrigerating a housing to a target temperature according to which: an evaporator is placed in said housing; said evaporator is placed in fluid communication with a thermochemical reactor Ri, simultaneously, the heat produced at said reactor Ri is evacuated; Characteristically, at least n>1 other thermochemical reactors are provided; I) the pressure Pevi in said evaporator after it is placed in fluid communication with said thermochemical reactor Ri, and the temperature of said thermochemical reactor Ri connected to said evaporator, are determined; II) when the temperature difference DTRi between the temperature of said reactor Ri connected to said evaporator and the equilibrium temperature TeSi of said reactive mixture contained in said thermochemical reactor Ri at the pressure Pevi of said evaporator is equal to a first predetermined differential and/or when the temperature difference DTev between said evaporator and the interior of said housing is equal to a second predetermined differential, said reactor Ri is isolated from said evaporator and said evaporator is placed in fluid communication with at least one thermochemical reactor Ri+1 the pressure whereof is less than Pevi and/or the temperature is less than a predetermined value, simultaneously, all or part of the heat that is produced at said reactors Ri+1 connected to said evaporator is also evacuated, III) steps I and II are repeated with reference to the thermochemical reactor Ri+1 in fluid communication with said evaporator (E) until the target temperature in said housing C is obtained.

The present invention concerns a method of refrigerating a housing to a target temperature according to which: an evaporator is placed in said housing; said evaporator is placed in fluid communication with a thermochemical reactor Ri, simultaneously, the heat produced at said reactor Ri is evacuated; Characteristically, at least n>1 other thermochemical reactors are provided; I) the pressure Pevi in said evaporator after it is placed in fluid communication with said thermochemical reactor Ri, and the temperature of said thermochemical reactor Ri connected to said evaporator, are determined; II) when the temperature difference DTRi between the temperature of said reactor Ri connected to said evaporator and the equilibrium temperature TeSi of said reactive mixture contained in said thermochemical reactor Ri at the pressure Pevi of said evaporator is equal to a first predetermined differential and/or when the temperature difference DTev between said evaporator and the interior of said housing is equal to a second predetermined differential, said reactor Ri is isolated from said evaporator and said evaporator is placed in fluid communication with at least one thermochemical reactor Ri+1 the pressure whereof is less than Pevi and/or the temperature is less than a predetermined value, simultaneously, all or part of the heat that is produced at said reactors Ri+1 connected to said evaporator is also evacuated, III) steps I and II are repeated with reference to the thermochemical reactor Ri+1 in fluid communication with said evaporator (E) until the target temperature in said housing C is obtained.

In some embodiments, cooling devices with metal hydrides are disclosed.