STEADY COUNTERFLOW HE II HEAT TRANSFER THROUGH POROUS MEDIA

Journal Article · Fri Apr 09 00:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3422302· OSTI ID:21371791

Dalban-Canassy, M; Van Sciver, S W ^[1]

---

1. FAMU-FSU College of Engineering, Mechanical Engineering Department, Tallahassee, FL, 32310 (United States)

We present steady state counterflow measurements performed on porous samples saturated in He II. The experiment is composed of a vacuum insulated open channel whose top extremity is closed to a Minco registered heater. The temperature and pressure differences across the plug are measured by two germanium TTR-G Microsensors registered thermometers and a Validyne DP10-20 differential pressure sensor. Applied heat fluxes range up to 0.5 kW/m{sup 2} of sample cross section. Measurements were performed at temperatures ranging from 1.7 to 2.1 K on highly anisotropic samples provided by Composite Technology Development Inc.: circular pellets (3.08 mm thick and 28.58 mm in diameter) of 20 compressed layers of pre-impregnated woven magnet insulation. In the laminar regime, the permeability is estimated from the pressure drop measurements for comparison with room temperature data. In the turbulent regime, the model based on tortuosity developed previously fails to describe the heat transfer behavior of He II in this type of porous medium.

• OSTI ID: 21371791
• Journal Information: AIP Conference Proceedings, Vol. 1218, Issue 1; Conference: International cryogenic materials conference (ICMC) on advances in cryogenic engineering materials, Tucson, AZ (United States), 28 Jun - 2 Jul 2009; Other Information: DOI: 10.1063/1.3422302; (c) 2010 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COMPARATIVE EVALUATIONS
FLUID FLOW
HEAT FLUX
HEAT TRANSFER
HEATERS
HELIUM II
LAYERS
POROUS MATERIALS
PRESSURE DROP
PRESSURE MEASUREMENT
SENSORS
TEMPERATURE MEASUREMENT
TEMPERATURE RANGE 0000-0013 K
ENERGY TRANSFER
EVALUATION
EVEN-EVEN NUCLEI
FLUIDS
HELIUM 4
HELIUM ISOTOPES
ISOTOPES
LIGHT NUCLEI
MATERIALS
NUCLEI
QUANTUM FLUIDS
STABLE ISOTOPES
TEMPERATURE RANGE