Studies of Convective Heat Transfer Coefficient Enhancement in Two-Phase, Non-Boiling Flow

An experimental investigation has been conducted to determine the heat transfer coefficient in a non-boiling, two-component, two-phase flow. Both upflow and downflow of air-water mixtures were studied in a 1 inch pipe. The superficial water velocities ranged from 0.40 to 3.24 m/s with the corresponding Reynolds numbers from 15,000 to 116,000. The superficial air velocities ranged from 0.39 to 1.95 m/s with the corresponding Reynolds numbers from 540 to 2,700. The two-phase flow patterns observed in the experiments were bubbly, slug and froth in upflow and bubbly, slug and annular in downflow. Heat fluxes up to 54 kw/m('2) were applied to the test section.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Nuclear Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2014

Author dc:creator

• Chu, Yen-Chang

• Engineering, Nuclear
• Energy

Language dc:language

eng

Identifier

(UMI)AAI8026468

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/67786