Abstract
This paper evaluates the efficiency of cooling a coil, fitted with an internal channel, for a one-turn inductor for electromagnetic metal forming, using a low-temperature air from a vortex tube, with and without an ejector. The experiment data shows that at constant pressure on the vortex tube entrance the highest cooling efficiency and intensity are reached at values β>1, where β is an ejector diaphragm to nozzle section area relation. The results show that air channel cooling of a coil for a one-turn inductor using air from vortex tube has considerably high efficiency and high safety parameters.
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