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

A test method and technology of thermal response, applied in the direction of thermal development of materials, etc.

Active Publication Date: 2012-11-21
上海建科建筑节能评估事务所 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 intermitte

Method used

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

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Embodiment Construction

[0019] Such as figure 1 and 2 As shown, the device of the present invention can be located on the roof of a building, there is no building to block the sunlight near the building, and the sunlight can irradiate the test platform from sunrise to sunset. The entire test bench is placed on a turntable, and the turntable is driven by a motor to rotate 360°. During the test, the test bench can track the sun so that the specimen is always facing the sun. The test bench consists of two test boxes, a protective box, an air-cooled chiller, measurement and control equipment and other auxiliary equipment. The system plan and actual view of the test bench are as follows, in which 1 is the chiller in the system plan, 2 is the computer console, 3 is the control cabinet, 4 is the fan coil unit, 5 is the electric heater, 6 is the test box, 7 For protection casing, 8 is a kind of heat preservation system, can be glass window.

[0020] The protective box is mainly used to isolate the test bo...

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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...

Claims

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Application Information

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IPC IPC(8): G01N25/20
Inventor 曹毅然杨建荣顾红跃
Owner 上海建科建筑节能评估事务所
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