Abstract
Heat exchangers are the most common and simplest equipment for cooling gas streams, but heat must be removed for their operation. However, by using a Laval nozzle, it is possible to achieve cooling of the gas flow due to a physical phenomenon in which the gas flow velocity is reduced to the speed of sound. The efficiency of such a nozzle depends on the change in the gas flow rate in it. Therefore, to regulate the mode of operation of the Laval nozzle, its design is proposed, which is simpler than the existing ones, cheaper to manufacture and operate. The nozzle is made of an elastic material - silicone, and is located in a special housing, into which a compression nut is inserted, which compresses the nozzle in the axial direction. Due to this achievement, the inner opening of the nozzle is reduced. Conducted simulation studies of the proposed design of the nozzle made it possible to apply its deformed state, developed and printed on a 3D printer of a mold - to make a silicone nozzle and conduct its research. After conducting a study of the silicone nozzle, it was established that the diameter of the hole at the critical section without deformation in the axial direction is 11.8 mm, and at a deformation of 10 mm - 8.6 mm.
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