Abstract
The main traditional attraction of Roots blowers has been the comparative simplicity, compactness, and low initial cost of the machine. The ultimate object of the work described has been to extend the range of economic applications of such machines. This has entailed the development of a detailed theoretical analysis, with ensuing computer programs and chart displays. In addition, extensive tests are reported for single- and two-stage systems: vacuum pump duty, as well as compressor duty, is fully discussed. The assembled information indicates means of producing more economical designs for existing duty specifications, and of producing higher delivery pressures than are normally associated with Roots machines.
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