Liquid water at 100 kPa and 25°C is heated in a chamber by mixing it with superheated steam at 100 kPa and 300°C. Liquid water enters the mixing chamber at a rate of 3.4 kg/s, and the chamber is estimated to lose heat to the surrounding air at 25°C at a rate of 2100 kJ/min. If the mixture leaves the mixing chamber at 100 kPa and 75°C, determine (a) the mass flow rate of the superheated steam, (b) the exergy destruction during this mixing process, (c) the exergy recovered during this mixing process and (d) the second-law efficiency of the mixing chamber.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
icon
Related questions
Question

Can you help solve the thermodynamics question? Answers are given.

h,
m,
P,
T,
[kJ/kg)
[kg/s]
[kPa]
[kJ/kg-K]
[C]
1
104.8
3.4
100
0.367
25
2
3074
0.2577
100
8.215
300
3
314
3.658
100
1.016
75
The mass flow rate of the superheated steam [kg/s]
The exergy destruction during this mixing process [kW]
The exergy recovered during this mixing process [kW]
second-law efficiency of the mixing chamber [%]
0.2577
104.2
54.17
34.2
Transcribed Image Text:h, m, P, T, [kJ/kg) [kg/s] [kPa] [kJ/kg-K] [C] 1 104.8 3.4 100 0.367 25 2 3074 0.2577 100 8.215 300 3 314 3.658 100 1.016 75 The mass flow rate of the superheated steam [kg/s] The exergy destruction during this mixing process [kW] The exergy recovered during this mixing process [kW] second-law efficiency of the mixing chamber [%] 0.2577 104.2 54.17 34.2
Liquid water at 100 kPa and 25°C is heated in a chamber by mixing it with superheated steam at 100
kPa and 300°C. Liquid water enters the mixing chamber at a rate of 3.4 kg/s, and the chamber is estimated
to lose heat to the surrounding air at 25°C at a rate of 2100 kJ/min. If the mixture leaves the mixing
chamber at 100 kPa and 75°C, determine (a) the mass flow rate of the superheated steam, (b) the exergy
destruction during this mixing process, (c) the exergy recovered during this mixing process and (d) the
second-law efficiency of the mixing chamber.
2100 kJ/min
25°C
3.4 kg/s
Mixing
chamber
> 75°C
100 kPa
300°C
Transcribed Image Text:Liquid water at 100 kPa and 25°C is heated in a chamber by mixing it with superheated steam at 100 kPa and 300°C. Liquid water enters the mixing chamber at a rate of 3.4 kg/s, and the chamber is estimated to lose heat to the surrounding air at 25°C at a rate of 2100 kJ/min. If the mixture leaves the mixing chamber at 100 kPa and 75°C, determine (a) the mass flow rate of the superheated steam, (b) the exergy destruction during this mixing process, (c) the exergy recovered during this mixing process and (d) the second-law efficiency of the mixing chamber. 2100 kJ/min 25°C 3.4 kg/s Mixing chamber > 75°C 100 kPa 300°C
Expert Solution
steps

Step by step

Solved in 5 steps

Blurred answer
Knowledge Booster
Basic Thermodynamic Processes
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.
Recommended textbooks for you
Elements Of Electromagnetics
Elements Of Electromagnetics
Mechanical Engineering
ISBN:
9780190698614
Author:
Sadiku, Matthew N. O.
Publisher:
Oxford University Press
Mechanics of Materials (10th Edition)
Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:
9780134319650
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Thermodynamics: An Engineering Approach
Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:
9781259822674
Author:
Yunus A. Cengel Dr., Michael A. Boles
Publisher:
McGraw-Hill Education
Control Systems Engineering
Control Systems Engineering
Mechanical Engineering
ISBN:
9781118170519
Author:
Norman S. Nise
Publisher:
WILEY
Mechanics of Materials (MindTap Course List)
Mechanics of Materials (MindTap Course List)
Mechanical Engineering
ISBN:
9781337093347
Author:
Barry J. Goodno, James M. Gere
Publisher:
Cengage Learning
Engineering Mechanics: Statics
Engineering Mechanics: Statics
Mechanical Engineering
ISBN:
9781118807330
Author:
James L. Meriam, L. G. Kraige, J. N. Bolton
Publisher:
WILEY