摘要:
A dispenser nitrogen purge and heater system for a liquid natural gas (LNG) fueling dispenser, comprising a nitrogen purge enclosure; a nitrogen container containing nitrogen; a nitrogen feed line for feeding nitrogen from the nitrogen container to the nitrogen purge enclosure; a heater for heating an interior space within the enclosure; and a fan assembly for circulating the nitrogen within the interior space.
摘要:
A cylinder assembly is provide with a cylinder containing a quantity of volatile liquid fuel and including a fuel inlet (11) on an upper portion of a circumferential surface, a gaseous fuel mixture outlet pipe (12) having one end communicating with top of the cylinder, and a pressure regulator (13) on the gaseous fuel mixture outlet pipe; an air compressor (30) on the top of the cylinder; a switch on the top of the cylinder for turning the air compressor on or off; an air pipe (18) having one end communicating with the air compressor and the other end terminating on a lower portion of the circumferential surface of the cylinder; and a curved air outlet pipe disposed within the cylinder and communicating with the other end of the air pipe, the air outlet pipe including holes (25) submerged in the liquid fuel. Air and fuel are uniformly mixed to form a gaseous fuel mixture.
摘要:
A portable liquid oxygen system may provide an average flow rate of oxygen gas at approximately 6-approximately 20 lpm using a rapid gas conversion mode.
摘要:
The invention relates to a heating system (1) for heating at least one gas or gas mixture flowing in a duct (2) having one end (3) connected to at least one pressurised or liquid gas source, which comprises at least one electric heating source (4) adjacent to a portion of the duct (2), characterised in that at least one thermal screen (6, 7) is provided between the heating source (4) and at least a portion of the duct (2) in which the gas to be heated flows.
摘要:
The invention relates to a device for evaporating cryogenic media, and to a method for defrosting an evaporation unit (4.1 - 4.4) of such a device. The device comprises at least two evaporation units (4.1 - 4.4), lines for feeding a process fluid to inlets of the evaporation units (4.1 - 4.4) and for discharging outflows of the evaporation units (4.1 - 4.4) to a consumer (5), wherein the lines are switched such that the evaporation units (4.1 - 4.4) can be alternately provided with process fluid. This device is characterized in that additional lines are provided for the alternating transfer of process gas from an outlet of one of the two evaporation units (4.1 - 4.4) to an inlet of the other evaporation unit (4.1 - 4.4), wherein a gas heater (6) is disposed in these lines for heating the process gas. If the device is exclusively utilized for evaporation, both evaporation units (4.1 - 4.4) are connected in parallel. If one of the two evaporation units is defrosted, the two evaporation units are connected in series, wherein the gas heater (6) is disposed between the evaporation units (4.1 - 4.4).
摘要:
A carbon dioxide dry cleaning system features a pair of liquid carbon dioxide storage tanks (18,20) in communication with a compressor (14). A sealed cleaning chamber (32) contains the objects to be cleaned. By selectively pressurizing the storage tanks with the compressor, liquid carbon dioxide is made to flow to the cleaning chamber (32) through cleaning nozzles (53) so as to provide agitation of the objects being dry cleaned. Liquid carbon dioxide displaced from the cleaning chamber returns to the storage tanks. In an alternative embodiment, a single storage tank is pressurized via a compressor with gas from the cleaning chamber so that liquid solvent from the storage tank travels to the cleaning chamber through nozzles. The objects in the cleaning chamber are agitated by a rotating basket. After a prewash cycle, liquid solvent from the cleaning chamber is directed to a still. The liquid solvent in the still is boiled through a connection with the head space of the cleaning chamber. The still may be positioned within the storage tank and partially surrounded with a shroud for efficient heating of the still with gas from the cleaning chamber. During agitation, liquid solvent from the cleaning chamber may be heated and filtered.