Accession Number : AD0682496
Title : CONVECTIVE AND BOILING HEAT TRANSFER UNDER HIGH CENTRIFUGAL ACCELERATIONS.
Descriptive Note : Final rept. 15 Jun 63-31 Aug 64,
Corporate Author : MINNESOTA UNIV MINNEAPOLIS
Personal Author(s) : Preckshot,George W.
Report Date : 15 FEB 1968
Pagination or Media Count : 112
Abstract : This report describes the construction of a centrifugal boiler capable of operating at centrifugal accelerations of 8,400 g with a 1 in. water depth. The power dissipation from 2 heating elements approximately 9 in. long each is 11 1/2 K.W. to produce flux of 1,000,000 Btu/hr. - sq. ft. Convective heat transfer to 1280 g can be represented by: Nu - 0.15 (Ra) exp. 0.363; 2x10 to the 7th power < Ra < 8 x 10 to the 10th power. Boiling heat transfer is presented in graphical form. A calculational procedure was developed for determining the bubble size departing from solid surfaces with and without inertial forces taken into account. (Author)
Descriptors : (*BOILERS, *HEAT TRANSFER), CENTRIFUGAL FIELDS, ACCELERATION, CONVECTION(HEAT TRANSFER), CONSTRUCTION, BUBBLES, INERTIA, BOILING
Subject Categories : Industrial Chemistry and Chemical Processing
Air Condition, Heating, Lighting & Ventilating
Distribution Statement : APPROVED FOR PUBLIC RELEASE