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SS 21.3 A cylindrical copper heating element 2ft long and 21 in diameter is immersed in water. The system pressure is maintained at 1atm and

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SS 21.3 A cylindrical copper heating element 2ft long and 21 in diameter is immersed in water. The system pressure is maintained at 1atm and the tube surface is held at 280F. Determine the nucleate-boiling heat-transfer coefficient and the rate of heat dissipation for this system. hfgCLT=0.070Aq=(0.012350.0709)3=190sft2Btu=680000hrft2Btuq=(680000)()(241)2=178000hrBtuh=68680000=10000hrftFBtu

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