Coursecode:
wb4410B
Coursename: Refrigeration technology A2
DUT creditpoints: 2
ECTS creditpoints: 3 |
| Faculty
of Mechanical Engineering and Marine Technology |
| Lecturer(s):
Machielsen,
ing. C.H.M., Infante Ferreira, dr.ir. C.A. |
Tel.: 015-27 85362 |
Catalog data:
Refrigeration technology A2. Introduction. Characteristics of refrigeration systems.
Compressors, condensers, expansion devices, evaporators, absorbers, generators, total
compression refrigeration system. |
Course year: 4
Period: 2/2/0/0
Hours p/w: 2
Other hours:
Assessment: oral
Assessm.period(s): By app.
(see academic calendar) |
| Prerequisites:
wb1224, wb4200/5, wb4300B, wb4302, wb4410A |
| Follow
up: wb4411 and practical work |
Detailed
description of topics:
Introduction.
Characteristics of refrigeration systems: compression systems,
absorption systems, expansion systems, thermo-electric systems, analogy of the above
systems.
Compressors: function, types and models, thermodynamics,
pistoncompressors, screwcompressors, other rotating compressors, centrifugal compressors,
simulation models, selection criteria.
Condensers: function, types and models, heat transfer (general), heat
transfer with condensation of pure gas, condensation in presence of other gases, special
types of surfaces, heat transfer at the cooling water side, air cooled condensers,
plate-fin condensers, economical optimization.
Expansion devices: function, types and models, dynamics of the
thermostatic expansion valve, models, selection criteria.
Evaporators: function, types and models, heat transfer, aircoolers,
combined heat- and mass transfer at the air-side of the aircooler, heat transfer between
two-phase flow of refrigerant and internal evaporator surface.
Absorbers: function, types and models, physical transport phenomena
in liquid films, heat and mass transfer in a liquid film, mass transfer in a liquid film,
vertical pipe bubble absorber.
Generators: function, types and models, heat and mass transfer.
Total compression refrigeration system: introduction, graphical
methods, analytical methods, connection of models, dynamic behaviour.
|
Course
material:
Various syllabi written by Infante Ferreira, C.A., Machielsen, C.H.M., and
Van der Ree, H. |
References
from literature:
- Koelet, P.C.:"Industrial refrigeration", The Macmillan Press Ltd.,
Houndsmills, 1992
- Cerepnalkowski, I.:"Modern refrigerating machines", Elsevier science
publishers, Amsterdam, 1991
- Stoecker, W.F.:"Industrial refrigeration", Business news publ. company, Troy,
1988
- Herold, K.E.: "Absorption chillers and heat pumps", CRC Press Inc., New York,
1996.
|
| Remarks
(specific information about assesment, entry requirements, etc.): |
Goals:
Intended as an extension of Refrigeration Technology A1, the goal of this course is to
set up design rules for the main components of compression as well as absorption systems.
The components will be discussed on the basis of practical examples used in practice. |
Computer
use:
Designing of refrigeration systems with the computerprogram "RADS"
(University of New Zealand) |
| Laboratory
project(s): |
Design
content:
Roughly 80% of this course is dedicated to the discussion of sizing methods for the
various components. |
| Percentage
of design: 80% |