The Proceedings of the Thermal Engineering Conference
Online ISSN : 2424-290X
2013
Session ID : D212
Conference information
D212 Measurement of frost crystals dimensions/distribution and scraping force to frost crystals by using SPM : Investigation on influence of humidity
Masato HONDAKoji MATSUMOTODaisuke SHIRAIKazuyoshi MATSUNAGATakahiro IKEYA
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CONFERENCE PROCEEDINGS FREE ACCESS

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Abstract
Since frosting to a cooling surface has often caused the loss of equipment performance, it is important to investigate the method for efficient removal of frost crystals from the cooling surface. Thus, authors focus on frosting from generation to the primary stage of growth because the scraping force of frost crystals on the cooling surface until the primary stage is expected to be weak. However, considering the dimensions of frost crystals until the primary stage, it is essential to measure frost crystals dimensions/distribution and scraping force in micro scale field. In this paper, using a scanning probe microscope (SPM), dimensions/distribution and scraping force of forest crystals until the primary stage were measured by authors' proposed method, varying humidites. And then, the correlations among them were clarified, comparing influences of the humidity with those of the surface temperature.
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© 2013 The Japan Society of Mechanical Engineers
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