Unit Operations Of Chemical Engineering
7th Edition
ISBN: 9789339213237
Author: MCCABE, WARREN
Publisher: Tata McGraw-Hill Education India
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Question
Chapter 6, Problem 6.4P
(a)
Interpretation Introduction
Interpretation:
The maximum length of pipe is to be determined.
Concept Introduction:
To obtain the maximum permissible length while restricting the flow within sonic barrier, a hypothetical condition is assumed such that the Mach number at the exit of conduit is unity. Based on this assumption and pipe specifications, flow properties such as Reynolds number and friction factor can be calculated. Thus, the maximum length of conduit can be correlated with friction factor and hydraulic diameter.
(b)
Interpretation Introduction
Interpretation:
The pressure and stagnation temperature at the maximum length is to be calculated.
Concept Introduction:
The pressure and temperature of gas during flow through the conduit depends on Mach number. If Mach number of gas at exit is assumed zero and temperature at both ends is assumed same, then stagnation temperature is directly a function of entrance temperature, Mach number, and ratio of specific heat.
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Only focus on H(3), which the answer is minus 1.26 KJ/mol. This also has the ideal gas of nitrogen gas N2. Two enthalpies need to be calculated for this. The first enthalpy is H = (specific volume) times (pressure difference). For the specific volume of nitrogen, how was 12.089 x10^(-5) m^3/mol obtained? I understand the second enthalpy for the heat capacity for nitrogen gas.
chemical engineering.
The answer for H(3) is minus 1.26 KJ/mol. Demonstrate the reference state to the process state for nitrogen gas. I know that is an ideal gas law for the nitrogen gas. I know how to calculate the heat capacity for this.
Chapter 6 Solutions
Unit Operations Of Chemical Engineering
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