Heat exchanger with dual concentric tube rings
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United States of America Patent
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Oct 29, 2019
Grant Date -
Jun 15, 2017
app pub date -
Dec 11, 2015
filing date -
Dec 11, 2015
priority date (Note) -
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Abstract
A water heater apparatus includes an elongated radial burner extending along a longitudinal central axis of the apparatus. First and second concentric rows of longitudinally extending fin tubes around the radial burner. The fin tubes may have multiple wiped circumferentially laterally portions allowing close packing of the fin tubes for improved efficiency and reduced footprint.
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