THE HEAT TRANSFER CHARACTERISTICS OF GASEOUS HYDROGEN AND HELIUM

Technical Report · Thu Dec 01 04:00:00 EST 1960

DOI:https://doi.org/10.2172/4842792· OSTI ID:4842792

McCarthy, J R; Wolf, H

Heat transfer experiments are described that were conducted with hydrogen and helium gas flowing turbulentiy in smooth, round, electrically heated tubes. Values of the ratio of wall-to-fluid temperature from 1.6 to 11.1 were achieved by lowering the inlet temperature of the gas in a liquid nitrogen intercooler. Bulk Reynolds numbers ranging from 4,000 to 1,500,000 and inlet temperatures of the gas as low as 135 deg R (-325 deg F) were obtained in the experiments. Measurements were made of the pressure drop along the length of the test section in adiabatic and in diabatic flow. The results are presented in tabular and in graphical form. Correlation of the results was achieved by including the term (T/sub w//T/sub b/)/sup a/ in the Nusselt equation. Values of the correlation exponent, a, are presented for the reference temperatures employed for evaluating the transport properties of the gas. The presence of acoustic resonance in the flow was found to increase the heat transfer coefficient by as much as a factor of two. (auth)

• Research Organization: Rocketdyne Div., North American Aviation, Inc., Canoga Park, Calif.
• NSA Number: NSA-15-029357
• OSTI ID: 4842792
• Report Number(s): NP-10572; RR-60-12
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

COOLING
DIAGRAMS
ELECTRICITY
ENGINEERING AND EQUIPMENT
EQUATIONS
FLUID FLOW
GAS FLOW
GASES
HEAT EXCHANGERS
HEAT TRANSFER
HEATING
HELIUM
HYDROGEN
LABORATORY EQUIPMENT
LIQUID FLOW
MEASURED VALUES
NITROGEN
NUSSELT NUMBER
PERFORMANCE
PRESSURE
REYNOLDS NUMBER
SOUND
SURFACES
TABLES
TEMPERATURE
THERMODYNAMICS
TUBES
TURBULENCE
VIBRATIONS