Design information guided

A comprehensive analysis of much of the data for dilute gas-solid suspension was reported by Pfeffer et al. [248]. Correlations for both heat transfer coefficient and friction factor were developed. These investigators presented a feasibility study of using suspensions as the working fluid in a Brayton space power generation cycle [249]. A subsequent presentation of design information and guide to the literature is given by Depew and Kramer [250]. 

Additional design information about the process can be found in a publication by the Association of Rotational Molders (ARM) titled, Introductory Guide to Designing Rotationally Molded Plastic Parts. A number of often-overlooked considerations in designing a rotomolding process are listed in Table 9.4. 

U. S. Army Materiel Command, Engineering Design Handbooks-Development Guide forReliability, Part 2 Design for Reliability (AMCP 706-196) Part 3 Reliability Prediction (AMCP 706-197) Part 4 Reliability Measurement (AMCP 706-298), National Technical Information Service, Springfield, Va., 1976. 

There is more information on this in Chapter 9. Dual volute casings tend to equalize the radial hydraulic forces around the pump impeller, thus expanding the operating window of the pump. The Ns is a guide in selecting the adequate volute design. 

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