In this article a novel concept of a mechanical pump is presented which is able to run at low temperatures (25 K). Since gas density varies inversely with temperature, this pump would deliver a much higher mass flow rate than at room temperature for a given size. Advantages of this concept are order of magnitude, reduction in size and weight, when compared with a conventional pump scaled to perform the same mass flow rate at room temperature. A temperature gradient for the different pumping stages allows the exhaust pressure optimization. This pump would be a solution to allow continuous tritium extraction and minimize the mass inventory for fusion tokamak fuel cycle control. Copyright (C) 1996 Published by Elsevier Science Ltd. [References: 8]
展开▼
