An accumulator arrangement for use in a cooling system suitable for operation with two-phase refrigerant includes a condenser having a refrigerant inlet and a refrigerant outlet. The accumulator arrangement further includes an accumulator for receiving the two-phase refrigerant therein, the accumulator having a refrigerant inlet connected to the refrigerant outlet of the condenser and a refrigerant outlet. Finally, the accumulator arrangement includes a subcooler having a refrigerant inlet and a refrigerant outlet, the refrigerant inlet of the subcooler being connected to the refrigerant outlet of the accumulators, and the subcooler being arranged at least partially within the interior of the accumulator.

A cooling system for transferring heat from a heat load to an environment has a volatile working fluid. The cooling system includes first and second cooling cycles that are thermally connected to the first cooling cycle. The first cooling cycle is not a vapor compression cycle and includes a pump, an air-to-fluid heat exchanger, and a fluid-to-fluid heat exchanger. The second cooling cycle can include a chilled water system for transferring heat from the fluid-to-fluid heat exchanger to the environment. Alternatively, the second cooling cycle can include a vapor compression system for transferring heat from the fluid-to-fluid heat exchanger to the environment.

Systems and methods relating to a plural in-series pumped liquid refrigerant trim evaporator cycle are described. The cooling systems include a first evaporator coil in thermal communication with an air intake flow to a heat load, and a first liquid refrigerant distribution unit in thermal communication with the first evaporator coil. The cooling systems further include a second evaporator coil disposed in series with the first evaporator coil in the air intake flow and in thermal communication with the air intake flow, and a second liquid refrigerant distribution unit in thermal communication with the second evaporator coil. A trim compression cycle of the second liquid refrigerant distribution unit is configured to further cool the air intake flow through the second evaporator coil when the temperature of the first fluid flowing out of the main compressor of the second liquid refrigerant distribution unit exceeds a predetermined threshold temperature.

A beverage making machine having a tank may be arranged to carbonate and/or chill liquid in the tank. A thermoelectric device may be thermally coupled to the tank to cool precursor liquid in the tank, and a heat pipe may transfer heat from the thermoelectric device to a heat sink. The heat sink may be located remotely from the thermoelectric device, e.g., in an air duct that helps prevent contact of moisture, dirt, etc. in the duct with the thermoelectric device.

The cooling systems and methods of the present disclosure involve modular fluid coolers and chillers configured for optimal power and water use based on environmental conditions and client requirements. The fluid coolers include wet media, a first fluid circuit for distributing fluid across wet media, an air to fluid heat exchanger, and an air to refrigerant heat exchanger. The chillers, which are fluidly coupled to the fluid coolers via pipe cages, include a second fluid circuit in fluid communication with the air to fluid heat exchanger and a refrigerant circuit in thermal communication with the second fluid circuit and in fluid communication with the air to refrigerant heat exchanger. Pipe cages are coupled together to allow for expansion of the cooling system when additional cooling capacity is needed. The fluid coolers and chillers are configured to selectively operate in wet or dry free cooling mode, partial free cooling mode, or mechanical cooling mode.

This cooling device (100) is a compressor for performing cooling by utilizing latent heat of vaporization without a compressor and is provided with a liquid feeding unit (10) for feeding a refrigerant, an evaporator (20) for evaporating the fed refrigerant, a condenser (30) for condensing the evaporated refrigerant, and a controller (50) for controlling the flow rate of the refrigerant. The controller is configured to determine whether or not dryout has occurred based on the temperature of the evaporator and the refrigerant temperature of the evaporator, the dryout being defined as a state in which a gas-phase refrigerant is in contact with an inner surface of a refrigerant flow path of the evaporator.

The invention provides a gravity heat pipe having a working fluid selected from the group consisting of HFO-1234ze(Z), HFO-1234ze(E), HFO-1336mzz(Z), HFO-1336mzz(E), HFO-1224yd(Z), HFO-1233zd(E), and a mixture thereof. The heat pipes of the invention are environmentally friendly, have good cooling performance and low manufacturing costs, and are suitable for cooling of communication base stations, servers, or data centers.

A cooling system containing a two-phase refrigerant, which cooling system includes a condenser, an evaporator and a conveying device. Liquid and gaseous refrigerant from the evaporator are collected in a collection vessel to which a first discharge line and a second discharge line are connected. Gaseous refrigerant is guided through the first discharge line to the condenser, whereas liquid refrigerant is conducted through the second discharge line to a part of the cooling system downstream of the condenser. Furthermore, a corresponding fuel cell cooling system is described which includes a fuel cell which forms the evaporator of the cooling system.

A cooling device includes a circulation system configured to circulate a refrigerant in a condenser so as to return the refrigerant to the condenser via a pump, a heater, a throttle valve, and a vaporizer; and a cooling system that includes a heat exchanger arranged in the condenser. The condenser includes a first portion where the refrigerant is present in a liquid state and a second portion where the refrigerant is present in a gas state, and at least a portion of the heat exchanger is arranged in the second portion.

A cooling system, including a first refrigeration medium, a first evaporator, a first condenser, and an all-condition cooling tower. The first evaporator is installed in a to-be-cooled space, the first evaporator is connected to the first condenser, an installation position of the first condenser is higher than an installation position of the first evaporator; the first condenser is connected to the all-condition cooling tower, and the all-condition cooling tower is disposed outside the to-be-cooled space, the all-condition cooling tower is used for providing the first condenser with a cold source for cooling the first refrigeration medium in a gaseous state.