Cryogenics
Code
10530
Academic unit
Faculdade de Ciências e Tecnologia
Department
Departamento de Física
Credits
3.0
Teacher in charge
Maria Isabel Simões Catarino
Weekly hours
2
Total hours
28
Teaching language
Português
Objectives
1) Provide general knowledge about what is cryogenics and its importance as a "technology frontier" among many sciences and engineering as thermodynamics, solid state physics, instrumentation, metrology, vacuum technology, the technologies related to space, medicine, etc .... examples of use of cryogenics will be the topics of exercises throughout the semester.
2) Provide the student the ability to, in front of a cryogenic system, quickly realize the basic principles of its operation. Facing a "simple" problem of cryogenics (Sr Engineer, I would like to cool 1 kg of copper at 80 K, what is the most economic way?), the student should know the specific requirements of the application (technical specifications), propose appropriate solutions, choose one and explain the reasons for this choice.
3) To know how to do some simple dimensioning calculations or address a diagnosis or provide orders of magnitude involved in designing a cryostat.
Prerequisites
Elementary thermodynamics will be necessary: Internal energy, Enthalpy, Specific heat, Thermal conductivity)
Subject matter
1. HISTORY AND APLICATIONS OF CRYOGENICS
2. PROPERTIES OF CRYOFLUIDS
3. PROPERTIES OF SOLIDS AT LOW TEMPERATURE
4. COOLING TECHNIQUES
5. MEASUREMENTS TECHNIQUES
6. CRIOSTATS
Bibliography
The Art of Cryogenics, G. Ventura & L. Risegari, Elsevier 2010
Teaching method
Lectures and problem-solving sessions, lab session and lab visit.
Evaluation method
2 tests or exam (70%)
One laboratory session (30%)