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Recommended Papers for: Carl-Eric Hagentoft

Total Papers Found: 3

Effect from a Variable U-Value in Adaptive Building Components with Controlled Internal Air Pressure

In an environment that experiences drastically changing temperatures it is potentially more energy efficient to use insulative walls that can change their apparent thermal conductivities. This paper suggests a nano-porous material able to change its thermal conductivity by a factor of 3 varying the pressure upon it from 1 to 100 kPa. Thermal conductivity measurements are made in-situ by an airtight guarded heat flow meter....

Author(s): , , ,

Using transient plane source sensor for determination of thermal properties of vacuum insulation panels

Researchers at the Chalmers University of Technology used the transient plane source (TPS) method to propose a technique for testing layered materials of a low conductive core, coated in a highly conductive thin film. The accuracy of the method to evaluate isotropic materials was tested prior to testing the ability of the TPS to analyze layered materials. Value differences were noted between the simulated and the measured temperature increases of ...

Author(s): , ,

Determination of specific heat capacity by transient plane source

This study developed a model that used a transient plane source (TPS) sensor to measure the specific heat capacity of anisotropic materials. The underside of a sample holder with a diameter of 20 mm, and a height of 5 mm was attached to a Kapton TPS sensor. During measurements, the sample holder was hung inside a steel tube at atmospheric pressure. Results showed that the model underestimated the heat capacity, which suggests ...

Author(s): , ,