Method for testing moisture-heat transfer performance of exterior wall and dedicated climate simulation test chamber therefor

Abstract

The invention discloses a method for testing moisture-heat transfer performance of an exterior wall and a dedicated climate simulation test chamber therefor. The method comprises the following steps of: firstly, putting a climate simulation test chamber in a laboratory, and building an exterior wall on a basal wall of the test chamber; then, curing for a designated test period, and adjusting and controlling the environmental temperature inside the laboratory; subsequently, pushing the sample wall to a side face of the climate simulation test chamber, performing moisture-heat transfer experiment after the sample wall is fixed and sealed, setting the climate simulation test chamber to simulate the natural environment, tracking and collecting the humidity and temperature data of components in each layer in the sample wall during the test, and adjusting and controlling the environmental temperature in the laboratory; and finally, collecting and comparing the changes of heat transfer coefficient of the sample wall before and after the test. The invention provides a feasible moisture-heat transfer performance test system for exterior wall systems under geographic environment and climatic conditions in summer-heat and winter-cold areas, and can simulate the real natural environment, measure the heat transfer performance and moisture transfer performance of a building exterior wall at the same time, and detect the change in heat engineering performance of an exterior wall.

Description

technical field [0001] The invention belongs to the field of building science and technology, and specifically relates to a method for testing the heat and humidity transmission performance of an exterior wall and a special climate simulation test box thereof, which can simultaneously test the heat transfer and moisture transfer of the exterior wall of a building. Background technique [0002] The regions with hot summer and cold winter are the main population settlements in my country, with higher temperature, higher rainfall, more days of annual rainfall, and higher humidity all year round. The effect of heat and humidity has an impact on the safety and durability of building walls, building condensation and moisture resistance, and thermal bridge condensation. Therefore, carrying out the simulation experiment of the moisture and heat transfer characteristics of the wall can provide important data support for the research of these problems. [0003] With the rapid develop...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the defect that the existing building exterior wall can only measure the heat transfer or moisture transfer alone when testing the thermal performance, and cannot completely simulate the real natural environment, the present invention provides a method for testing the moisture heat transfer performance of the exterior wall and its The special climate simulation test chamber can imitate the real natural environment, and measure the heat transfer and moisture transfer performance of the building's outer wall at the same time, so as to detect the thermal performance of the outer wall

Images