Device and method for measuring heat conductivity coefficient of roof greening

The invention relates to a device and method for measuring the heat conductivity coefficient of roof greening, and the device comprises a closed test chamber, the top of the closed test chamber is provided with a heater (1), the bottom of the closed test chamber is provided with a water sample control module (6), and the upper and lower surface layers of the water sample control module (6) and a to-be-tested roof greening or wall greening module (3) are provided with temperature sensors. A closed space is heated in a hot air diffusion mode of a non-contact heater, a roof greening module needing to be measured and a water sample comparison module with the same specification are placed on the bottom ground of the closed space, hot flow is conducted downwards, and after the temperature difference between the upper surface layer and the lower surface layer of roof greening is stable, the water sample comparison module is detected. The heat conductivity coefficient of roof greening can be calculated according to k