Building envelope thermal performance field test method

Abstract

The invention discloses a building envelope thermal performance field test method, which is used for field test and evaluation on thermal performance of a building envelope. In a currently common building envelope thermal performance field test method, a heat conductivity coefficient and a heat transfer coefficient are used as evaluation indexes of thermal performance of a building envelope, the building energy-saving property cannot be reflected completely, and the currently common method has the technical problems of strict requirements on test conditions, difficulty in operation and failure in direct and accurate test and evaluation on the whole thermal performance of the building envelope. In the building envelope thermal performance field test method provided by the invention, an amplitude-frequency response characteristic and a phase-frequency response characteristic of the building envelope to temperature waves are used as thermal performance indexes of the building envelope, and the thermal performance of the building envelope is evaluated by comparison between the field-test inherent frequency response characteristic of the building envelope to the temperature waves and the standard frequency characteristic of the building envelope. The method provided by the invention is not limited by climate and seasons, is simple and convenient to operate, has short period, is accurate in measurement, and can test and evaluate the whole or a single component of the building envelope.

Description

technical field [0001] The invention relates to a detection method for the thermal performance of a building enclosure structure, in particular to a method for detecting the overall thermal performance of the building enclosure structure and the thermal performance of a single component on site. Background technique [0002] In building energy consumption, the energy consumption brought by heat transfer through the envelope structure accounts for 73% to 77% of the energy consumption of the entire building. In order to promote building energy-saving technology, accurately grasp the thermal performance of buildings and building envelopes, correctly conduct building energy-saving design and evaluation, and make buildings truly energy-saving green and environmentally friendly buildings, it is necessary to analyze the completed buildings and building envelopes Perform accurate thermal performance testing on site. [0003] The thermal performance testing of the building envelope ...

AI Technical Summary

Problems solved by technology

[0007] The technical problem of the current on-site detection method for the thermal performance of the building envelope is that it can only detect a single thermal conductivity or heat transfer coefficient, which cannot fully reflect the thermal performance of the building envelope, and the test conditions are strict and subject to environmental and environmental conditions. Seasonal influence, long test cycle, inconvenient operation

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