Chemistry, 26.03.2020 18:38 markmlg122
The specific enthalpy of liquid n-hexane at 1 atm varies linearly with temperature and equals 25.8 kJ/kg at 30°C and 129.8 kJ/kg at 50°C. Determine the equation that relates ˆ H ( kJ / kg ) Hˆ(kJ/kg) to T(°C) and calculate the reference temperature on which the given enthalpies are based. Then derive an equation for ˆ U ( T ) ( kJ / kg ) Uˆ(T)(kJ/kg) at 1 atm. Calculate the heat transfer rate required to cool liquid n-hexane flowing at a rate of 20 kg/min from 60°C to 25°C at a constant pressure of 1 atm. Estimate the change in specific internal energy (kJ/kg) as the n-hexane is cooled at the given conditions.
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The specific enthalpy of liquid n-hexane at 1 atm varies linearly with temperature and equals 25.8 k...
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