Accession Number : AD0644868

Title :   PRACTICAL THIN-FILM HEAT TRANSFER IN WATER PURIFICATION.

Descriptive Note : Technical rept.,

Corporate Author : NAVAL CIVIL ENGINEERING LAB PORT HUENEME CALIF

Personal Author(s) : Beck,E. J.

Report Date : JAN 1967

Pagination or Media Count : 49

Abstract : While in principle, large increases in heat-transfer surface for a given production of distilled water would allow use of low overall temperature differences, this system leads to high costs because of excessive materials, as well as bulky and heavy machines. This report is the conclusion in a series on the use of improved boiling processes, and, more recently, heat transfer to very thin films. Two methods of forming and maintaining effective thin films are conceived and demonstrated in earlier reports; here, some of the problems of applying the small-scale findings to more complex configurations necessary for obtaining large areas in compact equipment are discussed. Experiments were made, and quantitative results are given. It is concluded that significant advances can be made in the development of compact, simplified machines using the techniques demonstrated. The results reported conclude the exploratory research, so further work on these concepts is not contemplated in the research program. (Author)

Descriptors :   (*FILMS, *HEAT TRANSFER), (*WATER, PURIFICATION), SURFACES, CURVED PROFILES, CONDENSERS(LIQUEFIERS), BOILING, DISTILLATION

Subject Categories : Civil Engineering
      Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE