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Dynamic frost growth detection using capacitive sensor.

Number: pap. 2272

Author(s) : SHEN Y., WANG X.

Summary

In this work, the frost growth was detected using capacitive sensing approach. An interdigital electrode was designed and fabricated based on the fringing effect. Frost growth under different wall temperature, air temperature was conducted and also observed using high speed camera. The results show that the reading of the capacitive sensing can represent the frost thickness in a resolution of 0.00069mm- 0.0013 mm depending on different frost property. The capacitive sensing can follow the frost thickness changing trend very well and the capacitance changing rate can reflect different frost growth stage. The frost thickness is higher in a lower wall surface temperature, and the effect of air temperature on the frost thickness is depending on the frost growth stage. This work has a great potential for understanding the frost growth mechanism and defrost control.

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Pages: 8

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Details

  • Original title: Dynamic frost growth detection using capacitive sensor.
  • Record ID : 30024471
  • Languages: English
  • Source: 2018 Purdue Conferences. 17th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2018/07/09

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