Given: Compression Ignition Cycle with the following data: compression ratio - 20 cut off ratio-2 maximum cylinder volume 500 cm³ intake air is at 100 KPa and 20°C Cp-1.01 kJ/kgK, k-1.4, R-287.1 J/kgk Using the cold air standard, the mass of air intake in kg is nearly equal to

Given: Compression Ignition Cycle with the following data: compression ratio - 20 cut off ratio-2 maximum cylinder volume 500 cm³ intake air is at 100 KPa and 20°C Cp-1.01 kJ/kgK, k-1.4, R-287.1 J/kgk Using the cold air standard, the mass of air intake in kg is nearly equal to

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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In a Diesel cycle, the volume at the end of the isentropic compression is 0.07 L. If the displaced volume of the cycle is 0.78 L, the cutoff ratio is 1.52, the specific heat ratio is y=1.37 and the heat rejected is 430 kJ/kg, the work done in kj per kg of air is: Select one: a. 705.2 Ob.521.4 Oc. 124.5 d. 566.0
Need help with this homework problem. 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 = 2.1 L. Determine per cylinder: a) the volume at state 1 in L.b) the air mass per cycle.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.
In a Diesel cycle, the volume at the end of the isentropic compression is 0.07 L. If the displaced volume of the cycle is 0.78 L, the cutoff ratio is 1.57, the specific heat ratio is y=1.38 and the heat added is 930 kJ/kg, the heat rejected in kJ per kg of air is: Select one: O a. 124.5 O b. 705.2 O c. 395.3 O d. 521.4
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A Brayton cycle inlet is at 300 K. Inlet and exit temperatures of the turbine is measured as 1800 K and 710 K, respectively. The compressor pressure ratio is 13. Use cold air-standard approach to calculate the thermal efficiency of the cycle. BURNER- COMPR. TURBINE a. 0.35 O b. 0.40 C. 0.45 d. 0.50 e. 0.55 f. 0.60 g. 0.65 Seçimimi temizle
An oi! engine takes in air at 1.01 bar. 20 °C and the maximum cycle pressure is 69 bar. The compression ratio is 18/1. Calculate the air standard thermal efficiency based on the dual combustion cycle 2 And represent the cycle on p-v diagram. Assume that the heat added at constant volume is equal to the heat added at constant pressure. Take Cp = 1.005 kJ/kg•K, C. = 0.718 kJ/kg·K for air.
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 = 2.1 L. Determine per cylinder: a) the volume per cylinder at state 1.b) the air mass per cycle.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. Correct Answers for a, b, and c. v1= 0.585 L m = 0.000679 kg Qin = 0.942 KJPlease shows correct solutions. Thank you!
Cycle work of an air standard otto engine is 1100 kj/kg. Maximum cycle temperature is 3300 deg. C and the temperature at the end of isentropic compression is 700 deg. C. Calculate the compression ratio of the engine. a. 9.34 b. 6.25 c. 7.78 d. 8.54
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I only need help with filling in the answers for parts h and i. 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 = 2.1 L. Determine per cylinder: a) the volume at state 1.b) the air mass per cycle.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 in %.g) the mean effective pressure, in bar.h) Develop a full exergy accounting per cycle, in kJ. Let T0 = 300 K, p0 = 1 bar (See image below).i) Devise and evaluate the exergetic efficiency for the cycle. part h