Q10 An air standard Otto cycle has a compression ratio of (8), at the start of thecompression process, the temperature is (300K), and the pressure is (100KP). If themaximum temperature is (1200K), determine(a) The heat supplied per Kg of air.(b) The net work done per Kg of air.(c) Thermal efficiency of the cycle(d) Mean effective pressure.Answer: 366.74 Kj/KgAnswer: 206.97 Kj/KgAnswer: 56.4 %Answer: 274.5 KN/m²JSPعماد داود عبود

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Answered: Q10 An air standard Otto cycle has a…

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

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An ideal Brayton cycle has a pressure ratio of 8. At the beginning of the compression process, air is at 300 K. If Tmax in the cycle is 1200 K, determine the temperature of air, in K, at the beginning of heat exchange processes.determine the back-work ratio,determine the thermal efficiency of the cycle (Apply air-standard assumptions: variable specific heat)
An ideal Brayton cycle has a pressure ratio of 8. At the beginning of the compression process, air is at 300 K. If Tmax in the cycle is 1200 K, determine the temperature of air, in K, at the beginning of heat exchange processes. (Apply air-standard assumptions: variable specific heat)
In an Qtto cycle with compression ratio 9, the air pressure at the beginning of the compression process is 95 kPa and the temperature is 27 ° CJhere is a constant volume of 800 kJ / kg heat input into the cycle.In the light of this information, Question 1:Standard air containers (taking into account the change of specific heat with temperature), a) temperature and pressure at the end of heat input into the cycle. b) the net work of the cycle, c) thermal efficiency, and d) Calculate the average effective pressure. Question 2:Cold air standard containers (taking specific temperatures constant), a) temperature and pressure at the end of heat input into the cycle, b) the net work of the cycle, c) thermal efficiency, d) average effective pressure and e) Compared to question 1, the thermal efficiency obtained by taking the specific heats constant was calculated how many% wrong.(Note:The solution gives more accurate results with variable specific heats!) (Cv = 0,718kj / kgK and R = 0,287 kPa.…
Consider an air-standard dual cycle with a compression ratio of 9.62. At the beginning of the compression. p, = 100 kPa, T= 300K, and the mass inside the system is 0.02kg. The total amount of energy added by heat transfer is 23.42 kJ, with half added at constant volume and half added at constant pressure. Determine for the cycle: a) the pressure and temperature at the end of cach process, in kPa and K: (some data are provided, you don't need to reevaluate it. Ignore the cells with "" in them.) Show your work where needed; b) the net work output, in k); c) the thermal efficiency; d) the mean effective pressure, in kPa. n and/or h (kJ/kg) p(kPa) 100 T(K) 300 State 3. 4. 1875
the compression ratio of an ideal Otto cycle is 8. Pressure of air at the beginning of the isentropic compression process 95 kPa, Temperature 27 °C and constant volume input to the cycle is 750 kJ / kg. Consider that the specific constant is taking; which of the following are the temperature and pressure values at the end of the heat input into the cycle? (Cp=1.005 kJ/ups, C, =0.718 kJ / ups, R=0.287 kJ/ups, k=1.4) Please select one: a.4392 КРа 1534к O b.4392 Pa 1534 K с. 439.2 КРа 1734 К d.439.2 kPa 1534 K e.4392 kPa 1734 K
In a C.I. engine working on the dual combustion cycle the compression ratio is 12.5:1. Air at 101.3kPa and 35°C is compressed adiabatically. Fuel is then added until the pressure reaches 4000kPa, then at constant pressure to a temperature of 1425°C. After adiabatic expansion to the initial volume exhaust takes place. Calculate: (a). work done/kg air (b). thermal efficiency
An air-standard Spark Ignition cycle has a compression ratio of 10.2. Air is at 3000°R at the end of the heat addition process. Neglecting the variation of specific heats with temperature, determine the following:a. Net output work of the cycleb. Heat rejection per unit mass, Btu/lbc. Thermal efficiency of the cycle(%). Compare this efficiency value if the cycle has to run on an air standard Carnot Cycle.
In an air-standard Carnot cycle heat is transferred to the working fluid at 1100 K, and heat is rejected at 300 K . The heat transfer to the working fluid is 100 kj /kg. The minimum pressure in the cycle is 0.1 MPa. Assuming constant specific heat of air, determine the efficincy of the cycle the pressure and specific volumes at each state.and the mean offective pressure Pm the compresion ratio ,the cut off ratio ,the expansion ratio finally calculate the work and heat for each process then determain the net heat and net work .disscuss the result
At the beginning of compression in an air standard Otto cycle, the state is 13.8 psia, 120 deg F; the compression ratio is rk = 9.2. (a) Find the clearance c. Find P and T at the end of the compression. (b) if cold air is the working substance (k = 1.4), and (c) if hot air is the working substance (k = 1.31).
An air-standard carnot cycle between temperatures of 450R and 1860R. the minimum pressure in the cycle is 14.5 psi. the amounf of heat supplied is 50 btu/lb. What is the: a. pressure after isothermal expansion in the closed system? b. The maximum pressure in the cycle
Read the questions carefully and answer with complete solution and units. Deductions will be given for incomplete units/solution. Use two decimal places for solution and final answers Connect your solution to the given final answers below.
In an air standard Otto cycle, the clearance volume is 12 % of the displacement volume. What is the thermal efficiency?

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