Measurement method for thermal performance of phase change building heat-insulation material

Abstract

The invention relates to a measurement method for thermal performance of a phase change building heat-insulation material used in buildings. The measurement method comprises the steps of dividing the chamber body of a simulated test chamber into a hot chamber and a cold chamber; separating the hot chamber and the cold chamber with a to-be-tested specimen of a phase change energy storage building material, wherein a heat generating device and a refrigerating device are installed in the hot chamber and the cold chamber respectively, a heat-flow meter is adhered at the middle position of the to-be-tested specimen in the hot chamber, thermal resistances are adhered on the top edge and the bottom edge of the heat-flow meter, a thermal resistance is adhered in the cold chamber at a position corresponding to that of the heat-flow meter in the hot chamber, and the heat-flow meter and the thermal resistances are connected with a paperless recorder; opening the heat generating device and the refrigerating device; automatically recording the temperature and the heat flow density at two sides of the to-be-tested specimen in the hot chamber and the cold chamber when the temperature of the cold chamber reduces to an outdoor average temperature of a heating period, and the temperature of the hot chamber of the simulated test chamber reaches to 18 DEG C; working out the thermal resistance of the and phase change energy storage material layer; and calculating the energy-saving effect of the specimen of the phase change energy storage building material according to a relationship of the heat transfer coefficients regulated by pyrology.

Description

technical field [0001] The invention belongs to the technical field of thermal performance testing of phase-change energy storage thermal insulation materials used for building walls, and in particular relates to a thermal performance testing method of phase-change building thermal insulation materials used on buildings. Background technique [0002] With the development of our country's economy, the problem of energy shortage is becoming more and more prominent, and the heating consumption of buildings is serious. [0003] Building energy conservation has become an important topic. my country's building energy consumption accounts for about 30% to 40% of the total energy consumption of the society, which is the fastest growing area of ​​energy consumption. The building energy consumption in the northern heating area accounts for about 40% of the national urban building energy consumption. The loss of heat through the wall during the heating period in severe cold and cold a...

AI Technical Summary

Problems solved by technology

For example: extruded board, polypropylene foam board, polystyrene board and polyurethane board, etc. The source of the base material of this foam insulation board is petrochemical products, which not only consumes a lot of energy, but also causes a shortage of raw material resources. Rather than energy saving, and the production process is complicated, the cost is high, and there are insurmountable natural defects: not resistant to high temperature, easy to burn, poor anti-aging, releasing toxic and harmful substances, etc.

How to accurately test the thermal resistance of phase change thermal insulation materials in the use of phase change thermal insulation materials is a difficult problem, and thermal resistance is an important index data for measuring thermal insulation materials. In the prior art, for the thermal resistance test of ordinary thermal insulation materials, Such as the extruded board, polypropylene foam board, polystyrene board and polyurethane foam board, etc., these materials are tested in a stable performance state, so the thermal resistance of the material can be tested directly with a heat flow meter, but for The thermal resistance test of the phase change thermal insulation material in an unsteady state, because the phase change thermal insulation material changes with the temperature, both endothermic and exothermic, so far, there is no one that can accurately test the phase change thermal insulation material Test method of thermal resistance

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