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