Embodiments of the present disclosure relate to a heating, ventilating, air conditioning, and refrigeration (HVAC&R) system that includes a vapor compression system and an absorption heat pump. The vapor compression system includes a compressor configured to circulate refrigerant through the vapor compression system, an evaporator configured to place the refrigerant in thermal communication with a low temperature heat source, and a condenser configured to place the refrigerant in thermal communication with an intermediate fluid loop. The absorption heat pump includes an absorption evaporator configured to place a working fluid in thermal communication with the intermediate fluid loop, an absorber configured to mix the working fluid in an absorbent to form a mixture, a generator configured to heat the mixture and separate the working fluid from the absorbent, and an absorbent condenser configured to place the working fluid in thermal communication with a heating fluid.

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 presents a thermochemical energy storage system. The system includes a membrane-based thermochemical reactor. The reactor includes a solution channel having an absorbent-containing solution flowing therethrough and a refrigerant channel having a refrigerant flowing therethrough along with first and second fluid channels. A porous membrane is positioned between the refrigerant channel and the solution channel; the porous membrane permits flow of vapor molecules therethrough while restricting flow of absorbent molecules. The system further includes a solution storage repository in fluid communication with the solution channel and a refrigerant repository in fluid communication with the refrigerant channel. The system can be used in high-density, high-efficiency, and low-temperature energy storage systems. The membrane-based reactor offers a large specific surface area and integrates solution/refrigerant flows, which enables formation of a highly compact reactor exhibiting strong heat/mass transfer. In some embodiments, direct diffusion of water molecules through the membrane makes it possible to lower the required charging temperatures.

Disclosed are systems and methods of intelligently cooling thermal loads by providing a burst mode cooling system for rapid cooling, and an auxiliary cooling system that controls the temperature of the thermal load and surrounding environment between burst mode cooling cycles. 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.

Disclosed are systems and methods of intelligently cooling thermal loads by providing a burst mode cooling system for rapid cooling, and an auxiliary cooling system that controls the temperature of the thermal load and surrounding environment between burst mode cooling cycles. 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.

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.

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.

An absorption heat pump apparatus absorbing refrigerant vapor using absorption liquid includes a container having a liquid storage portion storing a solution made of absorption liquid or a refrigerant; a heat exchanger installed in the container, and through which a heat exchange fluid flows; a pumping member pumping the solution in the liquid storage portion upward using the rotation thereof; and a coating member rotating integrally with the pumping member, and provided so as to radially extend outward from the center of rotation of the pumping member, and coating an outer surface of the heat exchanger with the solution pumped upward, wherein while the solution pumped upward moves to the center of rotation due to the rotation of the pumping member, and then radially moves outward from the center of rotation, the outer surface of the heat exchanger is coated with the solution through the coating member.

The present disclosure provides a combined cycle power plant (10) comprising a gas turbine (26), a heat-recovery steam generator (34) receiving exhaust gas (33) from the gas turbine (26) for producing steam (35), a steam turbine (32) receiving and expanding the steam (35) from the heat-recovery steam generator (34) to produce expanded steam (36), an air-cooled condenser (50) receiving the expanded steam (36) from the steam turbine (32), and an absorption refrigeration system (40) receiving a reduced temperature exhaust gas (38) from the heat-recovery steam generator (34). The absorption refrigeration system (40) is connected to the air-cooled condenser (50) to selectively extract heat from air (55) entering the air-cooled condenser (50).

A device is provided for supplying heating and cooling, the device having a heat transfer medium arranged in the interior of a storage tank and having at least one cycle process plant operated using a working substance. The heat transfer medium has a lower temperature in a bottom region of the interior than in a region of the interior arranged thereabove. All the components of the cycle process plant that contain the working substance are arranged in the interior. The components of the cycle process plant arranged inside the storage tank are surrounded by the heat transfer medium. The heat transfer medium has constituents to bind or convert the working substance. The amount of the constituent as a proportion of the heat transfer medium is dimensioned in such a way that the working substance contained in the cycle process plant can be completely bound or converted by the constituent after an escape from the cycle process plant.