TY - BOOK
T1 - Transient analysis of the thermal and moisture physical behaviour of building constructions
AU - Kohonen, Reijo
AU - Määttä, Jukka
PY - 1983
Y1 - 1983
N2 - Constitutive equations for simultaneous heat and mass
transfer in porous material are derived from the
integrated mass, momentum and energy balance equations
using the averaging divergence theorem. The temperature
and moisture content are used as independent variables.
In the energy balance equation the conduction, convection
and accumulation of heat and heat source due to phase
changes are considered. In the moisture balance equation
the accumulation of moisture, the diffusion flow of water
vapour, the capillary flow of liquid water and the
viscous flow of humid air and water are considered. The
boundary layer and interracial balance equations are
derived.
For transient analysis of the moisture physical behaviour
of multilayer constructions a numerical algorithm and a
computer program based on the Crank - Nicholson method
and quasi linearization is formulated.
Some example calculations are presented to illustrate the
computer program.
The accuracy of the numerical algorithm compared with the
analytical solution for a semi-infinite body is
presented.
AB - Constitutive equations for simultaneous heat and mass
transfer in porous material are derived from the
integrated mass, momentum and energy balance equations
using the averaging divergence theorem. The temperature
and moisture content are used as independent variables.
In the energy balance equation the conduction, convection
and accumulation of heat and heat source due to phase
changes are considered. In the moisture balance equation
the accumulation of moisture, the diffusion flow of water
vapour, the capillary flow of liquid water and the
viscous flow of humid air and water are considered. The
boundary layer and interracial balance equations are
derived.
For transient analysis of the moisture physical behaviour
of multilayer constructions a numerical algorithm and a
computer program based on the Crank - Nicholson method
and quasi linearization is formulated.
Some example calculations are presented to illustrate the
computer program.
The accuracy of the numerical algorithm compared with the
analytical solution for a semi-infinite body is
presented.
M3 - Report
SN - 951-38-1700-8
T3 - Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports
BT - Transient analysis of the thermal and moisture physical behaviour of building constructions
PB - VTT Technical Research Centre of Finland
CY - Espoo
ER -