In a dual cembustion cycle the macimum temperature is 2000cand the maximum pressure is Fobor. Calculate the thermal etticienyand the mean effective pressure when the pressure and temp-erature at the start ot compression are ibar and 17 respect-ively. The compression ratio is '18/1.Ans-63.6% lo-5 bar

Answered: Image /qna-images/answer/5959365b-bea9-42bc-8398-1124ce67e99b.jpg

In a dual cembustlon cycle the manimum temperature is 2000c and the maximum press ure is 7obor . Calculate the thermal efHicieny and the meen etfective pressure when He presure and temp- erature at the start ot compression are ibar and 17 respect- vely. The compression ratio is '18/1. Ans-63.6% lo-5bar

In a dual cembustlon cycle the manimum temperature is 2000c and the maximum press ure is 7obor . Calculate the thermal efHicieny and the meen etfective pressure when He presure and temp- erature at the start ot compression are ibar and 17 respect- vely. The compression ratio is '18/1. Ans-63.6% lo-5bar

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

It is desired to increase the compression ratio of spark ignition engine for 8 to 10. Assuming a ratio of constant pressure to constant volume specific heat to be 1.3, what will happen to the effeciency of the engine.?
bases on diesel cy D- An oil engine working on the dual combustion evcle has a compression ratio of 14 and the explosion ratio obtained from an indicator card is 1.4. If the cut-off occurs at 670 of stroke, find the ideal efficiency.
Q6/ In Diesel engine the air at the beginning the compression stroke the pressure and temperature 100kpa, 4OC respectively. The compression ratio is 16 and cut off ratio is 2.2. Find the maximun pressure and tempe rature. Heat imput, thermal cfficicncy and thc work down?
Gas compression and expansionSketch the cycle as well as determine the Qcycle and Q31 in kj
QC-10 YG10| A fou thuke diesel engine has a duplacement volume of o 0259 up (259L) the engine has a outputof 2200 pm delermwne the. mean effective 950 kw at presme tu mega pascel.
Q3:A small truck has #cylinder ,4 liter compression ignition engine that operates on irstandard Dual cycle with air fuel ratio of 16:1, the compression ratio is 17 and the cylinderdiameter is 14.5Cm. At the start of compression stroke Ta=5O'C and Pa=100 kpa .It can beassumed the half of the heat input is added at constant volume and halt at constant pressureCalculate:-Temperature and pressure at each state of the cycle. -Indicated thermal efficiency.
Q/A vu pear - compression retrigration cele uses R-iz as a working fluid. R-12 enters the compressor as Sat urated liquid vapor , omd enters the Ca pill ary tube as a Saturnted liquid, The min imum cycle temperatare is(-S)c° ad the maximum Cycle pressure is o.8 mpa adiabatic compressor exit tem premtuve is (So)ľ, Assume 1oss in conden ser and evaporottor. find The actual on pressure D The Specific hent transter from cold 19L) 2The coefficient of Perfor mance (Cop) ) The isontropicefficiney of the compessor The Specific heat tremsfer to the hot environment (9H)
Q 3) An engine working Sel Cycle has a Compression ratio of 15 and Cutt- off takes place on at 5% of the stroke. find the air standard efficiency Assume value of 8 = 1.4 for air-
no. 3 question: A diesel engine powers a boat. The engine’s cylinders each have a compression ratio (Vmax/Vmin) of 12 and the Vmax is 4ft3. If 1 cylinderis in the isobaric compression stroke, find the final temperature if the initial temperature is 540F Main question: From number 3, if the gas tankaccident happened on top of Mt. Everest’s summit where patm is only 33.7 kpa and the readings obtained are the same, find the new finaltemperature
A compressor must operate in a speed range between 0 and 1500 rpm. The friction torque of Coulomb Tc is 10 N. m. What should be the required Tw working torque if the compressor constant is 0.5 N. m. s. What is the power required by the engine that operates this compressor?
An oil engine operating on a dual cycle the pressures in the cy linder at the end of the compression stroke and 60% of the compression stroke are 35bar and 4 bar respectively. Assume that the compression follows the law PV4= C. The ratio of maximum to minimum pressure is limited to 70 and fuel injection is end at 8% from the total stroke. Find the compression ratio of the engine and the thermal efficieney. [Cr=1.005 KJkg.k, Cv= 0.718 KJkg.k]
3 - A 4 cylinder 4-stroke S.I square engine has a compression ratio of (8), and bore (100 mm). The volumetric efficiency of each cylinder is (75%). The engine operates at a speed of (4800 rpm) with air to fuel ratio of (15).given the calorific value of fuel is (42 MJ/kg), atmospheric air density is (1.12 kg/m³), mean pressure in the cylinder (10 bar) and mechanical eff (80%). Determine indicated thermal eff and brake power. [answer: 42.5% , 100.48 kw]