2) Find the heat supplied, in kJ per kg of air circulation. 3) Find the percent thermal efficiency of the cycle, neglecting the mass of fuel. In a constant pressure open cycle gas turbine air enters at 1 bar and 20°C and leaves the compressor at 5bar. Using the following data: Temperature of gases entering the turbine = 680°C, pressure loss in thecombustion chamber = 0.1 bar; Compressor Efficiency = 85%, Turbine Efficiency = 80%, CombustionEfficiency = 85%, k = 1.4 and Cp = 1.024 kJ/kg-K for the air and gas.1) Find the quantity of air circulation, in kg/sec, if the plant develops 1,065 kw.

Answered: In a constant pressure open cycle gas…

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

See similar textbooks

Similar questions

A gas turbine power plant working on Brayton cycle as per the following specifications Pressure and temperature of air at inlet to compressor = 1 bar and 10oC Power output of the plant = 8 MW Temperature at inlet to the turbine = 780 oC Pressure ratio = 12 Isentropic efficiency of compressor = 100% Isentropic efficiency of turbine = t(%)= 91 Discuss any three methods to improve performance of the cycle with justification based on the data given in the question
In a closed cycle gas turbine there is two stage compressor and two - stage turbine. All the components are mounted on the same shaft. The pressure and temperature of air at inlet to the first stage compressor are 1.5 bar and 20 °C respectively . The maximum cycle pressure and temperature are limited to 750 ° C and 6 bar. A perfect intercooling and reheating are used between the compressors and the turbines. A regenerator whose effectiveness is 0.7 was employed. Assuming the compressors and turbines efficiencies as 0.82 , calculate : a . Thermal efficiency of the cycle. b. Mass of working fluid for a power output of 350 kW. Assume the working fluid is air has c = 1.005 kJ / kg K , y = 1.4
Thermodynamics Answer the following questions with complete solutions. write legibly An engine operates with air on the cycle shown with isentropic processes 1 - 2 and 3 - 4, and constant volume processes at 2 - 3 and 4 - 1. If the compression ratio (r) is 12, the minimum pressure is 200 kPa, and the maximum pressure is 10 MPa, determine the net cycle work (Wcycle) in terms of the final volume of isentropic compression process (V2). (Note: r = V1/V2 = V4/V3).
For a Rankine cycle, decreasing minimum pressure while holding all other parameters constant will allow an engineer to make the following statements Group of answer choices The quality at the turbine exit will decrease increasing liquid water content and back stage turbine damage, Turbine net work output will increase due to the reduced pressure at the exit The quality at the turbine exit will increase improving turbine reliability The average temperature at which heat is rejected will increase increasing thermal efficiency
Steam is the working fluid in the ideal Rankine cycle 1–2–3–4–1 and in the Carnot cycle 1–2–3’–4’–1 that both operate between pressures of 1.5 bar and 60 bar as shown in the T–s diagram in Fig. below. Both cycles incorporate the steady flow devices shown in Fig. For each cycle determine (a) the net power developed per unit mass of steam flowing, in kJ/kg, and (b) the thermal efficiency. Compare results and comment.
Question No. 11: Consider an air standard cycle in which the air enters the compressor at 1.0 bar and 20° C. the pressure of air leaving the compressor is 3.5 bar and the temperature at turbine inlet is 600° C. determine per kg of air: Heat supplied to air and Heat rejected in the cooler & Work available at the shaft and the Efficiency of the cycle. Temperature of air leaving the turbine. For air γ = 1.4 and cp = 1.005 kJ/kg K
PART B ONLY A gas-turbine power generator operates on an ideal air-standard Brayton cycle 1 → 2 → 3 → 4 shown in Fig. 1. The gas temperatures at the compressor inlet, compressor exit, and turbine inlet are T1 = 300 K, T2 = 600 K, and T3 = 1200 K, respectively. Solve the problem below using the variable specific heat assumption. PART B - Determine the pressure ratio rp = P2/P1 and the temperature at the turbine exit, T4 (in K).
A 25 MW Gas Turbine power plant operating on a simple open cycle system gives the following data: Air inlet temperature = 300 K Air inlet pressure = 101.325 kPa Pressure ratio = 4 Temperature after combustion = 1150 K Compressor adiabatic efficiency = 92% Compressor mechanical efficiency = 87% Turbine mechanical efficiency = 80% Generator efficiency = 96 % Heating value = 41,680 kJ/kg Combustion losses = 10% For air and gas mixture, Cp = 1.005 kJ/kg – K, R = 282 J/kg-K Determine: The actual temperature entering the combustor in K. Fuel air ratio Fuel consumption in kg/s The volume of air supplied in CFM.
At the beginning of the compression process of an air standard Otto cycle, p1 = 1 bar, T1 = 300 K. The maximum temperature in the cycle is 2250 K and the compression ratio is 9.8. The engine has 4 cylinders and an engine displacement of Vd = 2.7 L. Determine per cylinder: c) the heat addition per cycle, in kJ.d) the heat rejection per cycle, in kJ.e) the net work per cycle, in kJ.f) the thermal efficiency.g) the mean effective pressure, in bar.h) Develop a full exergy accounting per cycle, in kJ. Let T0 = 300 K, p0 = 1 bar.i) Devise and evaluate the exergetic efficiency for the cycle.
A steam power plant working on Rankine cycle has the range of operation from 40 bar dry saturated to 1.2 bar. Draw the T-s and h-s diagrams and determine the following: (i) Steam quality at turbine exit (ii) Cycle efficiency (iii) Work ratio (iv) Steam rate
PART D only A gas-turbine power generator operates on an ideal air-standard Brayton cycle 1 → 2 → 3 → 4 shown in Fig. 1. The gas temperatures at the compressor inlet, compressor exit, and turbine inlet are T1 = 300 K, T2 = 600 K, and T3 = 1200 K, respectively. Solve PART D below using the variable specific heat assumption PART D - Evaluate the thermal efficiency η of the cycle and the back work ratio rBW = wC/wT.
At the beginning of the compression process of an air standard Otto cycle, p1 = 1 bar, T1 = 300 K. The maximum temperature in the cycle is 2250 K and the compression ratio is 9.8. The engine has 4 cylinders and an engine displacement of Vd = 2.6 L. Determine per cylinder:1) the heat rejection per cycle, in kJ.2) the net work per cycle, in kJ.3) the thermal efficiency.

SEE MORE QUESTIONS

Recommended textbooks for you

Elements Of Electromagnetics

Mechanical Engineering

ISBN:

9780190698614

Author:

Sadiku, Matthew N. O.

Publisher:

Oxford University Press

Mechanics of Materials (10th Edition)

Mechanical Engineering

ISBN:

9780134319650

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Thermodynamics: An Engineering Approach

Mechanical Engineering

ISBN:

9781259822674

Author:

Yunus A. Cengel Dr., Michael A. Boles

Publisher:

McGraw-Hill Education

Elements Of Electromagnetics

Mechanical Engineering

ISBN:

9780190698614

Author:

Sadiku, Matthew N. O.

Publisher:

Oxford University Press

Mechanics of Materials (10th Edition)

Mechanical Engineering

ISBN:

9780134319650

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Thermodynamics: An Engineering Approach

Mechanical Engineering

ISBN:

9781259822674

Author:

Yunus A. Cengel Dr., Michael A. Boles

Publisher:

McGraw-Hill Education

Control Systems Engineering

Mechanical Engineering

ISBN:

9781118170519

Author:

Norman S. Nise

Publisher:

WILEY

Mechanics of Materials (MindTap Course List)

Mechanical Engineering

ISBN:

9781337093347

Author:

Barry J. Goodno, James M. Gere

Publisher:

Cengage Learning

Engineering Mechanics: Statics

Mechanical Engineering

ISBN:

9781118807330

Author:

James L. Meriam, L. G. Kraige, J. N. Bolton

Publisher:

WILEY

SEE MORE TEXTBOOKS