The Supercritical Regime in Diathermal Heat Exchangers,
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 04, 1970
- Accession Number
- AD0718287
Entities
People
- Yu. P. Yakovlev
Organizations
- National Air and Space Intelligence Center