MULTI-CAVITY TUBES FOR AIR-OVER EVAPORATIVE HEAT EXCHANGER
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United States of America Patent
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Jan 14, 2021
app pub date -
Feb 19, 2020
filing date -
Apr 1, 2016
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An air-over evaporative heat exchanger with multi-lobed or “peanut” shaped tubes replacing conventional round or elliptical tubes. The tubes have a narrow horizontal cross section and tall vertical cross section to allow the multiplication of surface area in the same coil volume while maintaining or increasing the open-air passage area. This configuration allows the coil to have an overall external heat transfer coefficient much higher than a conventional coil, while the tube shape allows the use of thinner material, reducing the weight and cost of the heat exchanger.
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