Building Physics: Heat, Air and Moisture

Introduction0.1 Subject of the book0.2 Building physics0.3 Importance0.4 History0.5 Units0.6 Symbols1 Heat transfer1.1 Overview1.2 Conduction1.2.1 Conservation of energy1.2.2 The conduction laws1.2.3 Steady state1.2.4 Transient 1.3 Heat exchange at surfaces1.4 Convection1.4.1 In general1.4.2 Typology1.4.3 Quantifying the concevtive surface film coefficient1.4.4 Values for the convective surface film coefficient1.5 Radiation1.5.1 In general1.5.2 Definitions1.5.3 Reflection, absorption and transmission1.5.4 Radiant bodies1.5.5 Simple Formulae1.6 Building-related applications1.6.1 Surface film coefficients and reference temperatures1.6.2 Steady state: flat assemblies1.6.3 Local inside surface film coefficients1.6.4 Steady state: two and three dimensions1.6.5 Heat balances1.6.6 Transient1.7 Problems and solutions2 Mass Transfer2.1 Generalities2.1.1 Quantities and definitions2.1.2 Saturation degrees2.1.3 Air and moisture transfer2.1.4 Moisture sources2.1.5 Air and moisture in relation to durability2.1.6 Link to energy transfer2.1.7 Conservation of mass2.2 Air2.2.1 Overview2.2.2 Air pressure differentials2.2.3 Air permeances2.2.4 Airflow in open-porous materials2.2.5 Airflow across assemblies with air-open layers, leaky joints, leaks and cavities2.2.6 Air transfer at the building level2.2.7 Combined heat and air flow in open-porous materials2.3 Vapour Transfer2.3.1 Water vapour in the air2.3.2 Water vapour in open-porous materials2.3.3 Vapour transfer in the air2.3.4 Vapour flow by diffusion in open-porous materials and assemblies2.3.5 Vapour flow by diffusion and convection in open-porous materials and assemblies2.3.6 Surface film coefficients for diffusion2.3.7 The surface film coefficient for diffusion applied2.4 Moisture 2.4.1 Overview2.4.2 Water flow in a pore2.4.3 Vapour flow in a pore that contains water isles2.4.4 Moisture flow in a pore that contains water isles2.4.5 Moisture flow in materials and assemblies2.4.6 Simplified moisture flow model2.5 Problems and

Dr. Ir. Hugo S.L.C. Hens is an emeritus professor of the University of Leuven (KULeuven), Belgium. Till 1972, he worked as a structural engineer and site supervisor at a medium-sized architectural office. In 1975, after defending his PhD thesis, he started the building physics research unit within the Faculty of Engineering of the university. He taught building physics from 1975 to 2003, performance based building design from 1975 to 2005 and building services from 1975 to 1977 and 1990 to 2008. He has authored and co-authored approx. 70 peer-reviewed journal papers and 170 conference papers, has helped to manage hundreds of building damage cases and acted as coordinator of the CIB W40 working group on Heat and Mass Transfer in Buildings from 1983 till 1993. Between 1986 and 2008, he was operating agent of the Annexes 14, 24, 32 and 41 of the International Energy Agency's EXCO on Energy in Buildings and Communities. He is a fellow of the American Society of Heating, Refrigeration and Air Conditioning Engineers (ASHRAE).