(a) To determine The pressure, temperature and enthalpy at each principal stage of the cycle. The sketch of the T - s diagram. Explanation Draw the T - s diagram for the cycle. Figure (1) Write the expression for the specific enthalpy in terms of compressor efficiency at state 2. h 2 = h 1 + ( h 2 s − h 1 η c ) (I) Here, the compressor efficiency is η c , the specific enthalpy at state 2 is h 2 and the saturated specific enthalpy at state 2 is h 2 s . Write the expression for the specific enthalpy at state 4. h 4 = h 3 − η t ( h 3 − h 4 s ) (II) Here, the specific enthalpy at state 4 is h 4 and the specific enthalpy at state is h 3 . Write the formula of interpolation method of two variables. y 2 = ( x 2 − x 1 ) ( y 3 − y 1 ) ( x 3 − x 1 ) + y 1 (III) Here, the variables denote by x and y are specific entropy and specific enthalpy Conclusion: The following table contains the data’s given in the problem 9.42. Table-(1) State p ( KPa ) T ( K ) h ( kJ / kg ) 1 100 300 300.19 2 1200 603.5 610.65 3 1200 1450 1575.57 4 100 780.7 800.78 The principal state 1and 3 are same as the principal state 1and 3 of problem 9.42. Refer to problem 9.42 to obtain the temperature, pressure and enthalpy for principal state 1 and 3 as shown in Table-(1). The saturated principal state 2 and 4 are same as the principal state 2and 4 of problem 9.42. Refer to problem 9.42 to obtain the temperature, pressure and enthalpy for saturated principal state 2 and 4 as shown in Table-(1). Substitute 610.65 kJ / kg for h 2 s , 300.19 kJ / kg for h 1 and 0.80 for η c in Equation (I). h 2 = 300.19 kJ / kg + ( 610.65 kJ / kg − 300.19 kJ / kg 0.80 ) = 300.19 kJ / kg + 388.07 kJ / kg ≈ 688.27 kJ / kg Refer to table A-22 “ideal gas properties of air” to obtain pressure at specific enthalpy h 2 = 688.27 kJ / kg and 1200 kPa . Refer to table A-22 “ideal gas properties of air” to obtain the temperatures and the specific enthalpies at specific enthalpy h 2 = 688.26 kJ / kg as 670 K , 680 K and 681.14 kJ / kg , 691.82 kJ / kg . Show the pressure at 681.14 kJ / kg and 691.82 kJ / kg as in below Table. Reduced pressure specific enthalpy kJ / kg 670 K 681 (b) To determine The mass flow rate of the air. (c) To determine The rate of heat addition. (d) To determine The thermal efficiency for the cycle.

Fundamentals of Engineering Thermodynamics

8th Edition

ISBN: 9781118832301

Author: SHAPIRO

Publisher: JOHN WILEY+SONS,INC.-CONSIGNMENT

See similar textbooks

Videos

Question

Chapter 9.14, Problem 53P

(a)

To determine

The pressure, temperature and enthalpy at each principal stage of the cycle.

The sketch of the T-s diagram.

(b)

To determine

The mass flow rate of the air.

(c)

To determine

The rate of heat addition.

(d)

To determine

The thermal efficiency for the cycle.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Chapter 9.14, Problem 50P

Chapter 9.14, Problem 54P

Students have asked these similar questions

The resistance R and load effect S for a given failure mode are statistically independent random variables with marginal PDF's 1 fR (r) = 0≤r≤100 100' fs(s)=0.05e-0.05s (a) Determine the probability of failure by computing the probability content of the failure domain defined as {r

Please solve this problem as soon as possible My ID# 016948724

The gears shown in the figure have a diametral pitch of 2 teeth per inch and a 20° pressure angle. The pinion rotates at 1800 rev/min clockwise and transmits 200 hp through the idler pair to gear 5 on shaft c. What forces do gears 3 and 4 transmit to the idler shaft? TS I y 18T 32T This a 12 x 18T C 48T 5

Chapter 9 Solutions

Fundamentals of Engineering Thermodynamics

Ch. 9.14 - Prob. 1E Ch. 9.14 - Prob. 2E Ch. 9.14 - Prob. 3E Ch. 9.14 - Prob. 4E Ch. 9.14 - Prob. 5E Ch. 9.14 - 6. What is the purpose of a rear diffuser on a...Ch. 9.14 - 7. What is the meaning of the octane rating that...Ch. 9.14 - Prob. 8E Ch. 9.14 - Prob. 9E Ch. 9.14 - 10. What is the purpose of the gas turbine–powered...

Knowledge Booster

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.

The pressure, temperature and enthalpy at each principal stage of the cycle. The sketch of the T - s diagram.

Videos

The pressure, temperature and enthalpy at each principal stage of the cycle. The sketch of the T-s diagram.

The mass flow rate of the air.

The rate of heat addition.

The thermal efficiency for the cycle.

Want to see the full answer?

Chapter 9 Solutions

The pressure, temperature and enthalpy at each principal stage of the cycle.

The sketch of the T-s diagram.