Accession Number : AD0718287

Title :   The Supercritical Regime in Diathermal Heat Exchangers,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Yakovlev,Yu. P.

Report Date : 04 NOV 1970

Pagination or Media Count : 11

Abstract : New highly effective heat exchangers are needed in aviation, rocket, and nuclear engineering. In ordinary heat-exchanging systems the transfer of heat from one carrier to another through the walls of the heat exchanger is accompanied by both convection and radiation heat exchange. Consequently, the heat is absorbed by the fluid on the opposite side of the wall. An increase in this situation results in critical thermal densities. Underheating helps but cannot always be successful. Supercritical heat exchangers appear to be more efficient. Such devices are obtained by changing the metallic working elements of the heat exchangers for diathermal ones made of pyroceramic, quartz, or other diathermic materials. The result is that the crisis point moves further to the right the later it sets in. The device uses Planck's and Wien's laws. (Author)

Descriptors :   (*HEAT EXCHANGERS, DESIGN), CONVECTION(HEAT TRANSFER), NUCLEATE BOILING, PERFORMANCE(ENGINEERING), USSR

Subject Categories : Air Condition, Heating, Lighting & Ventilating

Distribution Statement : APPROVED FOR PUBLIC RELEASE