Method for measuring thermal response speed in hot-summer and cold-winter areas

Abstract

The invention discloses a method for measuring thermal response speed in hot-summer and cold-winter areas. A measuring device implementing the method comprises a protection box, measuring boxes, a cold water unit, fan coils, electric heaters and thermal insulation systems. The measuring boxes are disposed in the protection box. The method includes calibration steps: a first operation condition is a natural ventilation condition, surface temperature of the two measuring boxes keeps consistent to indoor air temperature in the natural ventilation state; and a second operation condition is an air-conditioning condition, the outer thermal insulation system and the inner thermal insulation system are mounted on the two measuring boxes used for comparison measurement respectively, an air-conditioning measuring and controlling system is started, temperatures in the measuring boxes and the protection box keep at set temperature, temperature difference of each measuring point is kept within 0.5 DEG C, inner surface wind speed of the measuring boxes is controlled to be smaller than 0.3 m / s, and response speeds of the inner surface temperatures of the inner thermal insulation system and the outer thermal insulation system of the two measuring boxes and air temperatures in the measuring boxes to the set temperature are compared.

Description

technical field [0001] The invention relates to the technical field of building energy-saving testing, in particular to a thermal response speed testing method in hot summer and cold winter regions. Background technique [0002] The wall load accounts for a large proportion of the air-conditioning load in buildings in hot summer and cold winter regions, so reducing the wall load becomes the key to building energy conservation. At present, the commonly used methods of building wall insulation include external insulation, intermediate insulation, internal insulation and self-insulation. Under unsteady conditions, due to the difference in thermal physical properties of indoor materials in different insulation methods, the thermal dynamic characteristics of the envelope structure will be changed, which will lead to a great difference in the indoor temperature response during air conditioning. For the intermittent air conditioning mode As far as buildings are concerned, the choi...

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Problems solved by technology

[0004] It is of great significance to explore a reasonable building insulation method suitable for this area, but there is no mature thermal response speed test method in the prior art, which can be compared and analyzed in the intermittent air-conditioning mode under other conditions. In the case of external insulation and internal insulation system, the difference between the inner surface temperature and the indoor air temperature response to the set temperature speed

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