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BYG-3802 Heat and Mass Transfer - 5 ECTS
Heat Transfer, is a required course for building engineering and optional for electrical/mechanical engineering students. The course presents the three modes of heat transfer: conduction, convection, and radiation. One-dimensional steady and transient conduction is studied for planar, cylindrical, and spherical geometries. The lumped capacitance analysis is used for transient conduction when appropriate. Analytical and numerical methods are presented for two-dimensional conduction problems, including the analysis of extended surfaces. Convection heat transfer is studied in both internal and external geometries and under laminar and turbulent flow regimes. External flows include cooling on flat plates due to laminar and turbulent boundary layer flows, and cooling of cylinders due to cross flow. The convection heat transfer analysis in internal flows considers laminar and turbulent pipe flows. Free convection is also considered where heat transfer is due to flow induced by fluid buoyancy. Radiation heat transfer is studied by considering both the general characteristics of radiation as well as the properties of radiating surfaces and radiation heat transfer between surfaces. Methods for solving multi-mode heat transfer are presented throughout the course. Heat exchangers and heat transfer from extended surfaces are two applications studied in the course. The mass transfer will cover the movement of moisture and dampness in buildings.
The course provides understanding and tools to carry out the design and analysis of processes involving heat transfer and mass transfer.
After completing the course the student will understand the fundamental physical principles of heat and mass transfer,
The course develops basic knowledge and problem solving skills in the areas of heat transfer and mass transfer.
The course provides understanding and tools to carry out the design and analysis of processes involving heat transfer and mass transfer with building applications in particular.
The descriptions should follow the following setup:
After passing the course, students will have the following learning outcomes:
Knowledge and understanding:
- Understanding of physical laws and mathematical equations that govern heat and mass transfer phenomenon and various applications
- Knowledge about mechanisms of different mode of heat and mass transfer
- Understanding of heat exchangers
- Solve steady one-dimensional heat transfer problems analytically. Use resistance method to approximate solutions to composite geometries
- Solve transient heat transfer problems using analytical methods and charts,
- Calculate heat transfer coefficients for free and forced convections, external and internal flows
- Calculate shape factors radiative heat fluxes between surfaces of simple geometries
- Analyse heat exchangers using NTNU and LMTD methods
- Calculate gradient driven species mass fluxes i.e. moisture transfer in buildings
Understanding moist air and use of mollier chart
Competence: Apply heat and mass transfer knowledge to estimate heat losses in various applications particularly in buildings. Understanding of cooling and heating loads in HVAC applications.
Coursework / Course requirements:
One mandatory written coursework
Examination and assessment:
1. A written school exam 3 hour (100%)
2. One written report must be pass as prerequisite to take the exam. Grade Pass/Fail.
Examination graded according to the scale A - F, where A is the best result, and E is the lowest passing grade
3. Re-sit examination will be arranged for this course