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Get Full Access to Thermodynamics: An Engineering Approach - 8 Edition - Chapter 7 - Problem 214p
Get Full Access to Thermodynamics: An Engineering Approach - 8 Edition - Chapter 7 - Problem 214p

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# Consider the turbocharger of an internal combustion

ISBN: 9780073398174 56

## Solution for problem 214P Chapter 7

Thermodynamics: An Engineering Approach | 8th Edition

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Problem 214P

Problem 214P

Consider the turbocharger of an internal combustion engine. The exhaust gases enter the turbine at 450°C at a rate of 0.02 kg/s and leave at 400°C. Air enters the compressor at 70°C and 95 kPa at a rate of 0.018 kg/s and leaves at 135 kPa. The mechanical efficiency between the turbine and the compressor is 95 percent (5 percent of turbine work is lost during its transmission to the compressor). Using air properties for the exhaust gases, determine (a) the air temperature at the compressor exit and (b) the isentropic efficiency of the compressor.

Step-by-Step Solution:

Step by step solution Step 1 of 5Express the turbine output power.Here, turbine output power is , mass of the exhaust gas is , specific heat atconstant pressure is , exhaust gas temperature at the turbine inlet is and exhaustgas temperature at the turbine exit is .From the “ideal-gas specific heat of various common gasses” table, select the specificheat of exhaust gases at the average temperature of as .Substitute for , for , for and for\n

Step 2 of 5

Step 3 of 5

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