MMT020F

Temporary

Cryogenics

7.5

Third-cycle course

7351 (Department of Machine Technology / Productions and Materials Engineering)

 -01-08

FN3/Per Tunestål

English

If sufficient demand

Cryogenics is the science and engineering of phenomena that occur at a temperature below 120 K. Cryogenics is the basis for a multi-billion industry and is a key enabling technology in such areas as the production and use of industrial gases, liquefied natural gas, space exploration, high energy physics, fusion energy and magnetic resonance imaging. It is an important technology for the European Spallation Source (ESS) Project. This class emphasizes the engineering aspects of cryogenics including: cryogenic properties of materials, air separation, refrigeration, liquefaction, cryostat design, cryocoolers, instrumentation, cryogenic safety and the properties of cryogenic fluids. Extensive examples will be drawn from current activities in both industry and research (including ESS). The class will consist of lectures and a design project using real world problems.

The scope of the course is divided into a number of topics that provide a broad background on cryogenic engineering. Properties of cryogenic fluids (Helium, Nitrogen, Oxygen, Hydrogen) are examined. The properties of materials at cryogenic temperatures is described. The fundamentals of cryogenic refrigeration, including thermodynamic cycles, heat exchangers and compressors are given. The applications and design of different cryocoolers (Pulse tube, Stirling, GM, JT) are reviewed. The application, production and behavior of He II is presented as is the cooling of systems below 1 K. Significant time is given to the description of thermal insulation systems and cryostat design including thermal shields, multilayer insulation and structural supports. Other lecture topics include: safety in cryogenics, cryogenic instrumentation, air separation, liquefied natural gas, liquid hydrogen, fundamentals of superconductivity and superconducting magnets, cryogenic equipment and space cryogenics. A brief overview of project management principles and terms is also presented.

Demonstrate a knowledge of the fundamentals of cryogenic engineering
Understand the applications of cryogenics in industry and research
Understand the scope of engineering problems associated with cryogenic engineering

Apply fundamentals of cryogenic engineering to solve engineering problems
Use knowledge gained to independently seek out and learn more about cryogenic engineering

Lectures

Project

Study visit

Written exam

Written report

Written assignments

The project report will include both an oral presentation and a written report

Failed, pass

Students should have had entry level courses in heat transfer, thermodynamics or equivalent course in chemistry and physics.

Course is suitable for students in engineering ( mechanical, chemical, physics), chemistry and physics

 

No assigned textbook. A list of recommended reading will be provided to the class

Course coordinator John Weisend
john.weisend@esss.se

MMT020F

 -01-08

FN3/Per Tunestål