Open Access
ARTICLE
CONTACT ANGLE MEASUREMENTS FOR ADVANCED THERMAL MANAGEMENT TECHNOLOGIES
Sally M. Smith*, Brenton S. Taft†
, Jacob Moulton
Air Force Research Laboratory Space Vehicles Directorate, Kirtland AFB, NM 87117, USA
*
Currently at NASA Wallops Flight Facility, Wallops Island, VA, 23337, USA
†
Corresponding author. Email: afrl.rvsv@kirtland.af.mil
Frontiers in Heat and Mass Transfer 2014, 5, 1-9. https://doi.org/10.5098/hmt.5.6
Abstract
This study investigates the wettability of fluid-solid interactions of interest for oscillating heat pipe (OHP) applications. Measurements were taken
using two techniques: the sessile drop method and capillary rise at a vertical plate. Tested surface materials include copper, aluminum, and Teflon
PFA. The working fluids tested were water, acetone, R-134a, and HFO-1234yf. A novel low-pressure experimental setup was developed for
refrigerant testing. Results show that the refrigerants have significantly lower hysteresis than the water and acetone-based systems, which is thought
to lead to better heat transfer in OHP design.
Keywords
Cite This Article
Smith, S. M., Taft, B. S. (2014). CONTACT ANGLE MEASUREMENTS FOR ADVANCED THERMAL MANAGEMENT TECHNOLOGIES.
Frontiers in Heat and Mass Transfer, 5(1), 1–9.