Steady-state heat transfer test of moisture-containing building materials

Heat transfer in porous moisture-containing materials involves a complex combination of different heat transfer mechanisms, including: radiation, heat conduction in solids and gases, convection (under certain service conditions), mass transfer (within the moisture-containing material), and the interactions between them.
The steady-state heat transfer test of moisture-containing building materials can use a protective hot plate or heat flow meter device to measure the heat transfer rate of moisture-containing materials under steady-state moisture conditions (that is, not affected by moisture migration) at temperatures above 0°C. The heat transfer rate of moisture-containing materials is a function of the moisture content. Combined with the data on the moisture distribution within the material, the actual thermal performance of the material can be estimated.
Zhongke Testing Reliability Experiment Center has the capabilities of environmental testing and reliability performance testing of various building materials, products and components, and provides professional steady-state heat transfer testing services for moisture-containing building materials and products.

Porous moisture-containing building materials and products such as aerated concrete, ceramic tiles, and calcium silicate boards.

1. When testing moisture-containing materials, the relevant requirements for the drying material testing process in the method standard of the device used should be met.
2. The selected test temperature should not damage the material being tested. High temperatures may cause high vapor pressure and damage the pore walls of materials with closed pore structures.

ISO 10051-1996 Determination of steady-state heat transfer rate of building materials containing moisture
GB/T 17370-2015 Determination of steady-state heat transfer rate of moisture-containing building materials
GB/T 10294-2008 Determination of steady-state thermal resistance and related characteristics of thermal insulation materials Protected hot plate method
GB/T 10295-2008 Determination of steady-state thermal resistance and related characteristics of thermal insulation materials Heat flow meter method
ISO 10456 Thermal insulation Building materials and products Determination of declared and design values for thermal properties