ME 515 Two-Phase Heat Transfer

Course Description:

This course will cover the fluid mechanics and heat transfer aspects of two-phase flow which occurs in power generating equipment, oil and gas line equipment, combustion, the atmosphere, and condensing equipment.

The different flow regimes and the different methods of examining flow regime boundaries will be presented. The governing set of equations for a two-phase system will be developed, and the effects and meaning of averages within the flow will be discussed.

Different methods of calculating the two-phase pressure drop in a flowing system will be presented for different hydraulic components, pipes, contractions, expansions, and valves. A specific project will be given in which the students write a program to calculate two-phase pressure drop using different methods and to compare these methods to published literature.

Two-phase choked flow through restrictions will be discussed and different methods which can be used to calculate the two-phase discharge will be given.

The subcooled and saturated boiling phenomena will be covered from inception of boiling to fully developed boiling. The effects of surface properties on the boiling performance of surfaces will be discussed. The postulated boiling mechanisms, for both pool boiling, and convective boiling will be discussed. The effects of convection on boiling and the flow suppression of boiling will also be discussed. The students will modify the computer program which they wrote for pressure drop to calculate boiling along a test section with different boiling heat transfer correlations. The concept of Critical Heat Flux will be discussed. Design type critical heat flux models and correlations will be discussed and calculations will be performed. Post critical heat flux or film boiling will be discussed including stable film boiling, dispersed flow film boiling, and inverted annular film boiling. The concept of the minimum film boiling temperature will be discussed along with models and correlations.

Condensation heat transfer will be analyzed for film type condensation, the Nusselt theory, and dropwise condensation. The effects of the surface properties on condensation heat transfer will be discusses. The effects of non-condensibles on the condensation heat rates will also be discussed as well as the effects of convective condensation. Different condensation correlations will be discussed.

There will be three examinations, homework, and two projects during the semester. Notes will be provided for each lecture and a reserved list of text books for supplemental reading will be provided. These books will be placed on the reserve list in the Engineering library.

For more details see the Course Syllabus.

Current Course Offering Schedule via C&DE:

Semester: Fall 2007

Day and Time: Tuesday and Thursday, 9:45 - 11:00

Location: 327 Sackett Building or Live Streaming Video

Start Date: August 27, 2007

End Date: December 21, 2007

PSU Course Catalog Description:

ME 515 TWO-PHASE HEAT TRANSFER ( 3) Heat transfer processes involving evaporation, boiling, and condensation.
 

Required Textbook

”Convective Boiling and Condensation, Third Edition”, J.C. Collier and J.R. Thome, Oxford Science Publications, Clarendon Press, (ISBN-0-19-856296-9) paperback version.

Available for $110.00 (free shipping) from the Office of Continuing and Distance Education due to its "Print on Demand" status from the publisher.

Also, Instructor’s notes will be provided as well as a reference list of texts.

The enrollment process is:

1. Contact the the Office of Continuing and Distance Education for admission into the course at 814-865-7643.

2. Complete and submit the Registration Form via mail, fax, or in person. See the Registration Page.