The invention relates to a switchgear cabinet air-conditioning apparatus for installing or semi-installing on or in a device to be air-conditioned, with a large number of electronic or electrotechnical components in this device. All the air-conditioning means, including fans, compressors, heat exchangers, piping, refrigerant and evaporators are located inside the housing of the switchgear cabinet air-conditioning apparatus. The housing has means for attachment to or in a section in the device to be air-conditioned and the housing comprises a first subsection oriented towards the air-conditioning device, and a second subsection directed towards the free environment. A separation region is formed between the first and the second housing subsection, wherein all or a large majority of these air-conditioning means, which are at risk of leaking in terms of the refrigerant, are arranged in the second subsection directed towards the free environment and in a compartment formed in this regard.

A method, an apparatus, a blockchain server and a storage medium for determining a temperature of a cooling liquid are provided. The method includes: determining a first average temperature of a plurality of chips and a first average power of the plurality of chips in a blockchain server, in which the blockchain server includes a liquid cooling system, the liquid cooling system includes a liquid cooling plate and the plurality of chips, the plurality of chips and the liquid cooling plate are in exchange of heat, and the cooling liquid is contained in the liquid cooling plate; determining a thermal resistance coefficient of the liquid cooling system; and determining a first temperature of the cooling liquid based on the first average temperature, the first average power and the thermal resistance coefficient.

A two chamber heat transfer unit configured such that hazardous air can circulate through one of the chambers and potential ignition source components are contained in another chamber through which the gas to be heated or cooled will circulate.

A two chamber heat transfer unit configured such that hazardous air can circulate through one of the chambers of the heat transfer unit and any potential ignition source components are contained in another pressurized chamber of the heat transfer unit.

In one embodiment, an RF impedance matching circuit is disclosed. The matching circuit is coupled between a plasma chamber and an RF source. The matching circuit includes a first electronically variable capacitor (EVC) having a first variable capacitance, a terminal of the first EVC being operably coupled to the RF input, and a second EVC having a second variable capacitance, a terminal of the second EVC being operably coupled to the RF output. A control circuit determines, based on a first parameter, a first capacitance value for the first EVC and a second capacitance value for the second EVC. The control circuit then generates a control signal to alter the first and second variable capacitances accordingly. The alteration of the capacitances, while the frequency of the RF source is not altered, causes RF power reflected back to the RF source to decrease.

A containerized data center includes: a data container, including a container body, and a side wall of the container body is provided with a vent; a heat dissipation module, installed on an outer wall of the container body, and provided corresponding to the vent; where the heat dissipation module includes a housing, a fan and a heat exchanger; the housing is sealed and connected to the outer wall of the container body and is communicated with the vent; both the fan and the heat exchanger are provided in the housing, where the fan guides the air in the container body to the heat exchanger, and the heat exchanger is connected with a liquid cooling source. The containerized data center provided has a simple structure, easy assembly, high heat dissipation efficiency, good heat dissipation effect, low energy consumption and pollution-free nature.

In one embodiment, an impedance matching circuit is disclosed. The matching circuit includes a first electronically variable capacitor (EVC) coupled to an input to enable receipt of an RF signal from an RF source, and a second EVC. The first and second EVCs do not have two common nodes. A control circuit determines, based on a first parameter, both a first capacitance value or configuration (CVOC) for the first EVC, and a second CVOC for the second EVC. Control signals alter the first EVC to the first CVOC and the second EVC to the second CVOC. The combined alteration of the first EVC and the second EVC causes RF power reflected back to the RF source to decrease.

A precooling system for a data center comprises a containment structure configured to direct warm air coming out of the back side of a computer rack into the first inlet of a first heat exchanger. Circulating fluid in the first heat exchanger is used to cool the air before releasing it toward the recirculation on the other side of the computer rack so as to air-cool the computer equipment inside the computer rack. A second heat exchanger may be used to cool the returning warm fluid. The second air inlet and the second air outlet of the second heat exchanger may be located outside the data center. The precooling system may be used in addition to a conventional air conditioning system to service the data center so as to reduce the energy consumption required to keep the data center at the optimal temperature.

The present disclosure discloses a container liquid-cooled data center, which includes a power transformation and distribution and fire control section, an IT equipment cooling section, and a cooling device section. The IT equipment cooling section includes a plurality of standard container server cluster chassis, each of which is internally provided with an immersion liquid-cooled system connected to the cooling device section through a pipeline. The cooling device section includes a closed cooling tower, an air-cooled heat exchanger, and a cooling water circulation system to dissipate heat from a circulating liquid system.

A sealed server unit is described. The server unit utilises a combination of air and liquid cooling to effect a cooling of the electronic components within the server unit. By sealing the unit to ambient conditions it is possible to deploy the server unit in non-traditional environments.