Positive type detection method for protecting integral heat-insulation property of structure

Abstract

The invention relates to a positive measuring method for integral heat insulation performance of enclosure structure, which is a measuring method and device aiming at integral heat insulation performance of enclosure structure. The method comprises following procedures. 1.) A programmable control heating source 0 set in room is connected with data collection and treatment controller to make it work according to given power change rule. 2.) Several indoor temperature sensors 1 measuring indoor temperature and outdoor temperature sensors 2 measuring outdoor temperature are connected with the data collection and treatment controller 3. 3.) Keyboard is used to select control rule for heat source and input sampling interval, total sampling time and starting instruction. 4.) Calculation programwith related coefficient of indoor temperature change rate and heat source power in the data collection and treatment controller is used to carry calculation out; obtained related coefficient is between 0 to 1; the value represents integral heat insulation performance of enclosure structure.

Description

technical field [0001] The invention relates to the technical field of building thermal technology for detecting the heat insulation performance of building envelope structures, in particular to a method for detecting the overall heat insulation performance of building envelope structures. Background technique [0002] In the field of building thermal engineering, the test and evaluation of the overall thermal insulation performance of the building envelope is one of the problems that need to be solved urgently in the detection of building energy saving effects. [0003] The thermal insulation performance testing of the building envelope generally refers to two aspects, one is to test the thermal insulation performance of some components (such as walls, doors, windows) in the building envelope, and the other is The overall thermal insulation performance of the building envelope is tested. [0004] Testing of the thermal insulation performance of components within the buildi...

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Problems solved by technology

For example, in the heat flow meter method, the heat flow sensor will have a large error under a small temperature difference, and it is also disturbed by uncertain factors such as the patch position; while the infrared thermal imaging method can only obtain the instantaneous temperature distribution on the surface of the local enclosure structure , and the actual energy consumption index and thermal insulation performance index cannot be obtained

[0006] In addition, due to factors such as environment, construction and installation, the conditions of building components in actual use are very different from those in the laboratory. Therefore, the overall thermal insulation of the envelope calculated based on the thermal insulation performance of each component There is often a big gap between the performance index and the actual situation

[0007] At present, there is no recognized mature method that can be used for the method, device or system of the overall thermal insulation performance test of the actual building envelope.

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