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Title: Increase resistance for efficient heating

Abstract

Conductors for use in heating systems are provided. The conductors are configured to have an extended current path for the current and increased resistance as seen by the current. The heating system may be an induction system. For example, the conductor may comprise a conductive material having a surface which faces an induction coil of an oscillating circuit. This surface may have a predetermined pattern of peaks and valleys. The peaks and valleys form a non-linear current path for the induced current when exposed to an electromagnetic field generated by the oscillating circuit. Other conductors such as a heat pipe may be used. The pipe may have walls with varying thicknesses over its length. The varying thicknesses may include a first thickness and a second thickness which alternate. The heat pipe may be used in an induction or direct contact heating system where AC is directly applied to the pipe.

Inventors:
Issue Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1860106
Patent Number(s):
11184959
Application Number:
16/240,201
Assignee:
UT-Battelle, LLC (Oak Ridge, TN)
Patent Classifications (CPCs):
H - ELECTRICITY H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR H05B - ELECTRIC HEATING
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Patent
Resource Relation:
Patent File Date: 01/04/2019
Country of Publication:
United States
Language:
English

Citation Formats

Kisner, Roger A. Increase resistance for efficient heating. United States: N. p., 2021. Web.
Kisner, Roger A. Increase resistance for efficient heating. United States.
Kisner, Roger A. Tue . "Increase resistance for efficient heating". United States. https://www.osti.gov/servlets/purl/1860106.
@article{osti_1860106,
title = {Increase resistance for efficient heating},
author = {Kisner, Roger A.},
abstractNote = {Conductors for use in heating systems are provided. The conductors are configured to have an extended current path for the current and increased resistance as seen by the current. The heating system may be an induction system. For example, the conductor may comprise a conductive material having a surface which faces an induction coil of an oscillating circuit. This surface may have a predetermined pattern of peaks and valleys. The peaks and valleys form a non-linear current path for the induced current when exposed to an electromagnetic field generated by the oscillating circuit. Other conductors such as a heat pipe may be used. The pipe may have walls with varying thicknesses over its length. The varying thicknesses may include a first thickness and a second thickness which alternate. The heat pipe may be used in an induction or direct contact heating system where AC is directly applied to the pipe.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2021},
month = {11}
}

Works referenced in this record:

Wireless Heat Devices
patent-application, August 2017


A physical model for skin effect in rough surfaces
conference, October 2012


Radiolucent Medical Table Heating Pad
patent-application, June 2020


AC induction field heating of graphite foam
patent, August 2017


A transformer-coupled, series-resonant topology for the induction heating of aluminum cookware
conference, June 2015


Induction heating apparatus
patent, September 1976


Method and system for sterilizing medical instruments
patent, September 1996


High efficiency, oxidation resistant radio frequency susceptor
patent-application, September 2004


Heat treatment of flexibly rolled strip
patent-application, February 2009


AC Induction Field Heating of Graphite Foam
patent-application, February 2016


Effect of Surface Roughness on Eddy Current Losses at Microwave Frequencies
journal, April 1949