System and method for measuring energy saving rate of building insulation material

Abstract

The invention provides a system and method for measuring an energy saving rate of a building insulation material. The measuring system comprises at least two identical detection rooms and further comprises at least one air conditioner and a wireless data transmission device, wherein each detection room comprises floor, enclosure walls and a roof; each air conditioner is provided with an independent power supply; the independent power supply is connected with an electricity meter; and the wireless data transmission device is used for transmitting data of the electricity meter. The measuring method comprises the following steps: respectively mounting to-be-measured sample plates and comparative sample plates in different detection rooms; respectively recording the power consumption data acquired by the electricity meters of the detection rooms provided with the to-be-measured sample plates and comparative sample plates as Qsample and Qcompare; and calculating the saving rate n of the power consumption according to a formula n=(Qsample-Qcompare) / Qcompare*100%. The evaluation method has the advantages that a detected value of the heat-insulating property is closer to an actual value after application of a building envelope, and reliable reference data is provide for application and popularization of the building insulation material, particularly an insulating mould coating.

Description

technical field [0001] The invention relates to the technical field of building thermal insulation materials, in particular to a measurement system and method for energy saving rate of building thermal insulation materials. Background technique [0002] With the increasingly prominent environmental problems and the shortage of energy sources such as coal, oil and natural gas, energy problems have become an important factor restricting social and economic development. The energy consumption of the building envelope accounts for more than 50% of the total energy consumption of the building, and the heat loss of the building envelope accounts for about 70%-80% of the total energy consumption of the building. On the other hand, the building area in our country is huge, and the building area that needs to be rebuilt for thermal insulation of the envelope is also very large. It is expected that by 2020, the national housing construction area will reach 68.6 billion square meters....

AI Technical Summary

Problems solved by technology

The solar reflectance and hemispherical emissivity and other indicators specified in the current standards cannot directly reflect the energy-saving effect of heat-insulating coatings; although the two methods of calculating the heat-insulating temperature difference and the hot box method are also similar to calculating the heat transfer coefficient, due to this The method of local heating may lead to uneven heat transfer, which is quite different from the actual external environment, and there is a large error between the test result and the actual situation.

Moreover, a single thermal conductivity and heat transfer coefficient cannot fully reflect the thermal performance of the building envelope.

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