High-frequency de-icing of cableways
First Claim
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1. A system for de-icing a surface of a cableway system component comprising:
- an electrical conductor proximate to, but not in contact with, the surfaces,wherein the electrical conductor is not configured to encircle the cableway system component; and
an AC power source for providing a high-frequency AC voltage in the electrical conductor that generates a high-frequency alternating electric field at the surface sufficient to melt ice at the surface.
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Abstract
High-frequency AC voltage with a frequency in a range of from 60 to 100 kHz supplied from a power source at 3 to 15 kV is applied to an electrical conductor within about 30 cm of a cableway. The high-frequency AC voltage generates an alternating electric field. Capacitive AC current associated with the alternating electric field flows through the ice on the cableway and on the electrical conductor, causing dielectric loss heat that melts the ice.
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Citations
38 Claims
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1. A system for de-icing a surface of a cableway system component comprising:
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an electrical conductor proximate to, but not in contact with, the surfaces, wherein the electrical conductor is not configured to encircle the cableway system component; and an AC power source for providing a high-frequency AC voltage in the electrical conductor that generates a high-frequency alternating electric field at the surface sufficient to melt ice at the surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A system for melting ice on a cableway system component, comprising:
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a first electrical conductor disposed at a distance of about from 0 to 30 cm from the ice wherein a physical space separates the first electrical conductor from the cableway system component and wherein the electrical conductor is not configured to encircle the cableway system component; and an AC power source for providing a high-frequency AC voltage in the first electrical conductor so that the AC voltage generates a high-frequency alternating electric field in the ice. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23)
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24. A method for de-icing a surface of a cableway system component, comprising a step of:
applying a high-frequency AC voltage to an electrical conductor that is located proximate to the surface, to generate a high-frequency alternating electric field that melts ice at the surface, wherein a physical space separates the electrical conductor from the surface and wherein the electrical conductor is not configured to encircle the cableway system component. - View Dependent Claims (25, 26, 27, 28, 29, 30)
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31. A method for melting ice on a cableway system component, comprising a step of:
applying a high-frequency AC voltage to a first electrical conductor that is located at a distance of about from 0 to 30 cm from the ice, wherein a physical space separates the first electrical conductor from the cableway system component and wherein the electrical conductor is not configured to encircle the cableway system component, to generate a high-frequency alternating electric field that melts the ice. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38)
Specification