Systems and methods are provided for data center cooling by vaporizing fuel using data center waste heat. The systems include, for instance, an electricity-generating assembly, a liquid fuel storage, and a heat transfer system. The electricity-generating assembly generates electricity from a fuel vapor for supply to the data center. The liquid fuel storage is coupled to supply the fuel vapor, and the heat transfer system is associated with the data center and the liquid fuel storage. In an operational mode, the heat transfer system transfers the data center waste heat to the liquid fuel storage to facilitate vaporization of liquid fuel to produce the fuel vapor for supply to the electricity-generating assembly. The system may be implemented with the liquid fuel storage and heat transfer system being the primary fuel vapor source, or a back-up fuel vapor source.

A system for better utilization of liquefied natural gas (LNG) on gasification of the liquid includes a gas power generation subsystem, a steam power generation subsystem, an energy storage subsystem, and a cooling subsystem. A gasification device of the gas power generation subsystem renders the LNG gaseous and collects cold energy generated during the gasification. The gas is supplied to the gas power generation device for generating electrical power and the cold energy is supplied to the steam power generation subsystem and the cold storage subsystem. Electrical power generated by the gas power generation subsystem and the steam power generation subsystem is supplied to the cooling subsystem, and the energy stored in the energy storage subsystem is also supplied to the cooling subsystem.

Vacuum cooling assemblies for cooling a beverage are disclosed herein. In an embodiment, the vacuum cooling assembly may include a container compartment, a container disposed within the container compartment, and at least one beverage supply line in communication with the container compartment. The at least one beverage supply line may be configured to supply the beverage to the container within the container compartment. The vacuum cooling assembly also may include at least one vapor trap in communication with the container compartment. Moreover, the vacuum cooling assembly may include a vacuum pump in communication with the at least one vapor trap. The vacuum pump may be configured to create a vacuum in the at least one vapor trap and the container compartment, causing at least a portion of the beverage to evaporate, thereby vacuum cooling the beverage within the container.

In some embodiments, an air-cooled ammonia refrigeration system comprises: an air-cooled condenser comprising a heat exchanger and at least one axial fan; an evaporator coupled to the air-cooled condenser; a subcooler positioned between the air-cooled condenser and the evaporator; a compressor coupled to the evaporator; an oil cooler coupled to the compressor; a water system coupled to the air-cooled condenser, the water system comprising a water source, a water pump, and a plurality of spray nozzles positioned below the air-cooled condenser; and a control circuit coupled to the air-cooled condenser and the water system, the control circuit configured to pulse atomized water through the plurality of spray nozzles to a surface of the air-cooled condenser when a head pressure of the air-cooled condenser is higher than a predetermined value.

Some aspects of the invention provide an air cooling system. The air cooling system may include a solar energy gathering component that drives a cooling system. The air cooling system may include an absorption cooling system or a thermoelectric cooling system. The cooling system may include a solar collector matched with an air venting system. The cooling unit may hang on the inside of a window or on another vertical surface and utilize the heat and/or radiation from the sun to activate a cooling mechanism that, in turn, provides cooling via the cooling system.

Some aspects of the invention provide an air cooling system. The air cooling system may include a solar energy gathering component that drives a cooling system. The air cooling system may include an absorption cooling system or a thermoelectric cooling system. The cooling system may include a solar collector matched with an air venting system. The cooling unit may hang on the inside of a window or on another vertical surface and utilize the heat and/or radiation from the sun to activate a cooling mechanism that, in turn, provides cooling via the cooling system.

A cooling system and a related method is presented. The cooling system includes a reservoir configured to selectively supply a cooling fluid; a circulation loop fluidly coupled to the reservoir, and configured to circulate the cooling fluid to and from the reservoir, and a heat exchanger thermally coupled to the circulation loop and configured to exchange heat with the cooling fluid. The reservoir includes a refrigerant and an anti-freeze additive. The anti-freeze additive is characterized by a lower critical solution temperature (LCST) such that when an operating temperature of the reservoir is greater than the LCST, the reservoir is configured to supply a cooling fluid including the refrigerant to the circulation loop; and when the operating temperature of the reservoir is lower than the LCST, the reservoir is configured to supply a cooling fluid including the refrigerant and the anti-freeze additive to the circulation loop.

A method of making integrated adsorption and heat exchanger devices for solid sorption refrigeration systems (1). An integrated adsorption and heat exchanger device comprises a solid material having formed therein both a porous adsorption structure, which is pervious to an adsorbate of said system, and a heat exchanger structure, which is impervious to said adsorbate, for heat exchange with the porous adsorption structure in operation of the system.

A method of making integrated adsorption and heat exchanger devices for solid sorption refrigeration systems (1). An integrated adsorption and heat exchanger device comprises a solid material having formed therein both a porous adsorption structure, which is pervious to an adsorbate of said system, and a heat exchanger structure, which is impervious to said adsorbate, for heat exchange with the porous adsorption structure in operation of the system.

In some embodiments, an air-cooled ammonia refrigeration system comprises: an air-cooled condenser comprising a heat exchanger and at least one axial fan; an evaporator coupled to the air-cooled condenser; a subcooler positioned between the air-cooled condenser and the evaporator; a compressor coupled to the evaporator; an oil cooler coupled to the compressor; a water system coupled to the air-cooled condenser, the water system comprising a water source, a water pump, and a plurality of spray nozzles positioned below the air-cooled condenser; and a control circuit coupled to the air-cooled condenser and the water system, the control circuit configured to pulse atomized water through the plurality of spray nozzles to a surface of the air-cooled condenser when a head pressure of the air-cooled condenser is higher than a predetermined value.