Course content

The following topics are covered:-Condensation: Fundamental heat and mass transfer. Condensation of single component vapors and vapor mixtures. Fluid flow, pressure drop and heat transfer in condensers. Design of condensers.-Boiling/evaporation: Fundamental heat transfer theory. Critical heat flux. Boiling of mixtures. Pressure drop and heat transfer in process equipent, including steam generators. Self-circulation and forced-circulation systems. Design of process equipment.// The course will normally not be offered if there are less than 5 candidates.

Learning outcome

-Knowledge: •Vapor/liquid two-phase flows: Different flow regimes occurring in pipe flows, calculation of characteristic quantities such as void, slip velocity and pressured drop in two-phase flows. • Heat transfer by condensation: Gravity assisted and convection controlled flows. Heat transfer in laminar and turbulent conditions. Annular flows. Heat and mass transfer in condensation of mixtures.• Heat transfer in boiling: Pool boiling and convective boiling. Criteria for bubble nucleation and bubble growth in boundary layers. Boiling of mixtures. –The course gives the student insight about: • Heat transfer and pressure drop in two-phase flows. • Mass transfer in boiling and condensation of mixtures.• Practical methods for treatment of heat transfer and pressure drop in boiling and condensation.-Skills: The course enables the student to: •Analyze and calculate pressured drop in two-phase in-tube flows for practical situations.•Analyze and calculate heat transfer in condensation and boiling of single- and multicomponent fluids i heat transfer equipment. -General competence: The course gives the student: •Advanced knowledge concerned with two-phase flow, heat transfer and pressure drop in boiling and condensing flows in heat transfer equipment.

Learning methods and activities

Lectures or study groups and compulsory exercises. To pass the course a score of at least 70 percent is required.

Compulsory assignments

• Exercises

Required previous knowledge

Requires good basic knowledge in heat transfer and fluid mechanics.

Course materials

Lecture notes and literature specified at course start.

Credit reductions