Course Director: Dr. Norbert Harmathy
Lecturers: Dr. Norbert Harmathy, Zsófia Bélafi
Course: Compulsory
Course Load: 2 hours of lectures per week
Credits: 2 points
Completion: Test
Announced: Autumn Semester

Lecture Topics

One dimensional steady state heat transfer of composite slabs

Thermal condition for a room, balance temperature of a non-heated space, energy conservation approaches. Conduction: Fourier’s equation, Concept of thermal conductivity, range of thermal conductance of building materials. Convection. Steady state heat transfer of composite slabs, overall heat transfer coefficient, temperature gradient. Modified conduction of insulations. Air gaps. Reverse tasks: Maximizing inner temperature different. Fulfilling new U-value requirement for existing wall. Examples and exercises.

 One dimensional steady state heat transfer of composite slabs – Part 1
 One dimensional steady state heat transfer of composite slabs – Part 2

Linear heat transmission

Introduction to thermal bridges, definition of self-scale temperature, two applications of SST, definition of apparent thickness, generalized model of wall corner, generalized model of wall corner temperature. Ground loss. Estimation of wall corner temperature, thermal accumulation capacity, exercises.

 Linear Heat Transmisson (Thermal Bridges) – Thermal Capacity – Part 1

Psychometrics and moisture transfer

Definition of moist air, Dalton‘s Law, moisture content, saturation vapour pressure, relative humidity, dew point, dry and wet bulb temperatures, specific enthalpy. Moisture sources and moisture balance. Mechanism of vapour transfer, scope of calculation, vapour conductivity and resistance, overall vapour resistance of multilayer wall, overall vapour transfer, design consideration, examples.