A High Reynolds Number Facility for Operation at 10,000 PSI and 3500 R.
Final scientific rept. 15 Dec 68-14 Dec 70,
NEW YORK UNIV BRONX AEROSPACE LAB
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The design of a cored brick air heater, moderately high density aluminum oxide possessing a porosity of approximately 30 to operate at a pressure of 10,000 psi, has been completed. The heater supplies 50 lbsec of air at discharge temperature greater than 3500 degrees R, with a maximum temperature variation of 100 degrees R over a 15 sec running time. Various types of heater vessel construction were considered before the final selection of a forged vessel was made all vertical configurations. Press closures have been utilized to permit rapid heater operation and coolant passages have been placed along the full length of the heater core. The passages contribute to a reduced insulation thickness 5 inches versus 10 inches to a foot or more in existing units and provide an initial preheat to the incoming air during the heater blowdown, thereby effecting a reduction in heater length as well as avoiding the use of alumina at very low temperatures where brittleness is extreme. This novel design results in a savings of roughly 40 as regards the pressure vessel size, and the total cost of the heater is reduced by a similar amount. Author
- Air Conditioning, Heating, Lighting and Ventilating
- Test Facilities, Equipment and Methods