Heat transfer and pressure drop in a compact pin-fin heat exchanger with pin orientation at 18 deg to the flow direction

Technical Report · Fri Feb 01 00:00:00 EST 1991

OSTI ID:5465658

Olson, D A

The authors have measured the heat transfer and pressure drop characteristics of a novel, compact heat exchanger in helium gas at 3.5 MPa and Reynolds numbers of 450 to 12,000. The 'pin-fin' specimen consisted of pins, 0.51 mm high and spaced 2.03 mm on centers, spanning a channel through which the helium flows; the angle of the row of pins to the flow direction was 18 degrees. The specimen was radiatively heated on the top side at heat fluxes up to 74 W/sq cm and insulated on the back side. Correlations were developed for the friction factor and Nusselt number. The Nusselt number compares favorably to those of past studies of staggered pin-fins, when the measured temperatures are extrapolated to the temperature of the wall-fluid interface.

• Research Organization: National Inst. of Standards and Technology (CSTL), Boulder, CO (United States). Chemical Engineering Div.
• OSTI ID: 5465658
• Report Number(s): PB-91-194464/XAB; NISTIR-3965
• Resource Relation: Other Information: Sponsored by National Aeronautics and Space Administration, Hampton, VA. Langley Research Center
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
HEAT EXCHANGERS
HEAT TRANSFER
PRESSURE DROP
EXPERIMENTAL DATA
FRICTION FACTOR
HEAT FLUX
MATHEMATICAL MODELS
NUSSELT NUMBER
PRESSURE GRADIENTS
REYNOLDS NUMBER
TEMPERATURE DISTRIBUTION
TURBULENT FLOW
DATA
ENERGY TRANSFER
FLUID FLOW
INFORMATION
NUMERICAL DATA
420400* - Engineering- Heat Transfer & Fluid Flow