Based on the house with reinforced concrete and inner thermal insulation for external wall and ceramsite concrete for internal wall that is common in newly building houses at present, this paper establishes the mathematical model of room unsteady heat transfer at the heating calculating temperature out of the door.

To solve the heat transfer between engine coolant and solid components such as cylinder liner and cylinder block,a numerical liquid-solid coupled simulation method was applied to steady heat transfer calculation in an engine.

The energy equilibrium equation and discrete ordinate methods are combined to establish the one-dimensional steady heat transfer mathematical model of multi-layer thermal insulations (MTIs) in metallic thermal protection systems.

Using steady heat transfer theory and basing on known heat barrier data of type Liaoshen I solar greenhouse,this paper sets up a heat balance equation.

This thesis is on the basis of the steady state heat transfer theory,in order to obtain heat transfer of neighboring house.

Analysis and determination of items amount of reaction coefficient for unsteady heat transfer calculation of wall;