In a compression process in a dynamic compressor having at least one first and one second compression stages, a first gas having a first molecular weight of less than 10 g/mol is compressed, at least one second fluid having a second molecular weight greater than 50 g/mol is mixed with the first gas to form a third gas to be compressed having a molecular weight greater than 10 g/mol, the third gas is sent to the first compression stage, the third gas is cooled in a first heat exchanger downstream of the first compression stage, where it is partially condensed, the partially condensed third gas is sent to a first phase separator to form a fourth gas having a lower molecular weight than the third gas and a first condensed liquid having a higher molecular weight than the third gas, the fourth gas is sent from the first phase separator to the second compression stage, the fourth gas compressed in the second compression stage is sent to cool in a second heat exchanger where it partially condenses, and the partially condensed fourth gas is sent to a second phase separator to produce a fifth gas having a lower molecular weight than the fourth gas.

An inflatable device equipped with a guiding mechanism and methods of installing the inflatable device to form a temporary barrier within a gas turbine engine are provided. In one aspect, an inflatable device includes a backbone and an inflatable bladder connected thereto. The backbone is formed of a flexible and inextensible material. The inflatable bladder is formed of an expandable material. To install the inflatable device within an annular chamber of a gas turbine engine, the backbone is inserted into a first access port of the engine and is moved circumferentially around the annulus of the chamber. The backbone is retrieved through a second access port. The inflatable bladder is moved into position within the chamber by pushing the backbone into the first access port and/or pulling the backbone out of the second access port. When positioned in place, the inflatable bladder is inflated to form an annular seal.

A process for producing compressed hydrogen gas, said process comprising electrolysing water to produce hydrogen gas and compressing said hydrogen gas in a multistage compression system to produce compressed hydrogen gas. The multistage compression system comprises at least one centrifugal compression stage, and the hydrogen gas is fed to the centrifugal compression stage at a pre-determined feed temperature and pressure and having a pre-determined relative humidity. The process further comprises adding water and heat to the hydrogen gas upstream of the centrifugal compression stage, as required, to humidify the hydrogen gas to the pre-determined relative humidity.

A centrifugal compressor for a chiller includes an impeller, a motor, a diffuser, and at least one injection port. The impeller is attached to a shaft rotatable about a rotation axis. The motor is arranged and configured to rotate the shaft in order to rotate the impeller. The diffuser is disposed downstream from the impeller. The at least one injection port is located within the diffuser. The at least one injection port is configured and arranged to supply liquid refrigerant into the diffuser from a condenser or an economizer of the chiller.

A humidifier for an airway pressure support system is implemented for delivering a humidified flow of breathing gas to a patient. The humidifier includes a water chamber, a conduit, a nozzle, a heater plate, and a separator feature. The conduit includes first and second ends, and a wall portion defining an interior pathway between the first and second ends and structured to convey the flow of breathing gas between the first and second ends. The nozzle is fluidly connected to the water chamber and configured to produce a water droplet from water received from the water chamber. The heater plate is coupled to the wall portion, exposed to the interior pathway, and positioned to receive the water droplet from the nozzle. The separator feature is coupled to the wall portion and configured to shield the water droplet from the flow of breathing gas.

A method of cleaning deposited solid material from a fouled portion of a gas compressor (6) whilst the gas compressor (6) is in situ in a natural gas processing system (1) is provided. The method comprises the steps of supplying a liquid cleaning agent to a gas inlet of the gas compressor (6), the liquid cleaning agent being capable of removing the deposited solid material; passing the liquid cleaning agent through the gas compressor (6) to a gas outlet of the gas compressor (6), wherein at least a portion of the cleaning agent remains in a liquid state as it passes through the fouled portion of the gas compressor (6); and recovering a fluid containing removed material that is output from the gas compressor (6) so as to prevent the removed material reaching one or more gas processing stages of the gas processing system (1) downstream of the gas compressor (6).

A misting fan system includes a fan and a mister positioned above the fan. The fan includes a motor and a plurality of fan blades operably coupled thereto. Each of the fan blades comprises a base member and a paddle member mated to the base member, and each paddle member comprises an upper surface and a lower surface. A hydrophobic coating may be applied to at least one of the upper surface and the lower surface of the paddle member of at least one of the plurality of fan blades.

A misting fan includes a nozzle, a fan assembly, and a support assembly. The nozzle is configured to spray water. The support assembly is formed with a coupling portion for detachably coupling a battery pack. The nozzle is disposed on the fan assembly or the support assembly and includes a nozzle body and a second part. The nozzle body includes a first part formed with a first surface and the second part is detachably installed to the nozzle body and formed with a second surface. When the second part is installed to the nozzle body, a water flow channel is formed between the second surface and the first surface. When the second part is detached from the nozzle body, the first surface is at least partially exposed for cleaning access.

A humidifier is for an airway pressure support system for delivering a humidified flow of breathing gas to an airway of a patient. The humidifier includes a water chamber, a conduit, a nozzle, a heater plate, and a number of heating elements. The nozzle is fluidly connected to the water chamber and has an outlet configured to produce a water droplet from water received from the water chamber. The heater plate is coupled to a wall portion of the conduit and is exposed to an interior pathway of the conduit. The heater plate has a first side facing the nozzle and an opposite second side facing away from the nozzle. The first side is positioned to receive the water droplet from the nozzle. The number of heating elements are coupled to the second side of the heater plate.

An improved air scrubber has an improved, more efficient, more robust impeller and impeller housing for mixing incoming air with water, scrubbing the air with increased efficiency and lower mean time between failures. Also water flow through the system is improved to prevent loss of scrubbing performance and to reduce user workload. In addition to these improvements, the water intake system has been redesigned to use less water, prevent using too much water, and to prevent previously common errors that require users to drain water from the impeller housing.