The specific enthalpy of liquid n-hexane at 1 atm vanes linearly with temperature and equals 25.8 kJ/kg

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The specific enthalpy of liquid n-hexane at 1 atm vanes linearly with temperature and equals 25.8 kJ/kg at 30°C and 129.8 kJ/kg at 50°C.

(a) Determine the equation that relates H (kJ/kg) to T(°C) and calculate the reference temperature on which the given enthalpies are based. Then derive an equation for U (T) (kJ/kg) at 1 atm.

(b) Calculate the average heat transfer rate required to cool 20 kg of liquid n-hexane from 80°C to 20°C in 5 mm.

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Elementary Principles of Chemical Processes

ISBN: 978-0471720638

3rd Edition

Authors: Richard M. Felder, Ronald W. Rousseau

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Question Posted: Dec 27, 2010 04:52 AM

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The specific enthalpy of liquid n-hexane at 1 atm vanes linearly with temperature and equals 25.8 kJ/kg

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11 bHaT 25852301302 1302 H0 Tref 25 C 52 a aTb a 1298 258 5030 Table B1 SG CH ...View the full answer

Elementary Principles of Chemical Processes

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