Low Film Resistance Condenser For Operation In A Gravity-Free Environment
Project Title:Low Film Resistance Condenser For Operation In A Gravity-Free Environment
Hanover, NH 03755
Principal Investigator:Valenzuela, Javier A.
Two-phase thermal transport loops offer significant weight and performance advantages
over conventional single-phase spacecraft thermal management systems. Key components
in two-phase thermal management systems are the condensing and evaporating heat exchangers
to couple the loads to the two-phase thermal bus, and to transfer heat between the
thermal bus and the spacecraft radiator. The main requirements for these heat exchangers
are that: 1) they control the location of manage the gas and liquid phases in the
absence of gravity and 2) they have high heat transfer coefficients; that is, they
operate at high heat fluxes with low overall temperature differences.
A novel condencing heat exchanger concept which has the potential to operate at heat
transfer coefficients an order of magnitude larger than is possible with current
designs is proposed. Phase I of this project will assess the feasibility of the
proposed heat exchanger by performing a proof-of-concept experiment and developing
scoping analyses to estimate its expected range of performance. If proven feasible,
a prototype heat exchanger will be built and tested in Phase II.