Liquid droplet heat exchanger studiesRecent analytical and experimental investigations of the liquid droplet heat exchanger (LDHX) concept for space power applications are described. The performance of the LDHX is compared to that of a conventional heat exchanger for heat rejection applications in a Brayton cycle, using the mass-specific heat exchanger effectiveness as a figure of merit. It is shown that the LDHX has an order of magnitude advantage over the conventional heat exchanger. Furthermore, significant improvement in cycle efficiency and power to mass ratio is possible. Two-phase flow experiments in a laboratory scale LDHX, using air and water as the two media, show very good agreement with the quasi-one-dimensional model used in the parametric studies.
Document ID
19880035459
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Bruckner, A. P. (Washington Univ. Seattle, WA, United States)
Hedges, D. E. (Washington Univ. Seattle, WA, United States)
Yungster, S. (Washington, University Seattle, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1987
Subject Category
Fluid Mechanics And Heat Transfer
Meeting Information
Meeting: Space nuclear power systems 1986
Location: Albuquerque, MN
Country: United States
Start Date: January 13, 1986
Sponsors: ANS, Los Alamos National Laboratory, USAF