A diatomic gas engine contracts isothermally from V2 = 2.00 m³ and p2 = 172 kPa to a volume V₁ and pressure 574 kPa. The engine then follows an isobaric process to V2, then an isochoric process to the original pressure, p2. Calculate the engine's efficiency. [Hint: Start by drawing the engine cycle on a pV-diagram.] .1152

A diatomic gas engine contracts isothermally from V2 = 2.00 m³ and p2 = 172 kPa to a volume V₁ and pressure 574 kPa. The engine then follows an isobaric process to V2, then an isochoric process to the original pressure, p2. Calculate the engine's efficiency. [Hint: Start by drawing the engine cycle on a pV-diagram.] .1152

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

HANDWRITTEN AND FINAL ANSWER MUST BE IN ENGLISH UNITS. Show solution.ANSWER iii. Consider an ideal gas with the following characteristics: R = 115 ft-lbf/lbm-R Cp = 0.25 + 0.00035T (BTU/lbm-R) i. Solve for the value of k at 1250 R. ii. Refer to the table shown below: SEE IMAGE iii. Solve the following unknown parameters for Carnot cycle: Volume at end of isothermal compression Heat added and Heat rejected Wnet Efficiency Mean effective pressure iv. Solve the following unknown parameters for Otto Cycle Mass Pressure and Temperature ateach corner Heat added and Heat rejected Wnet Efficiency Mean effective pressure Percentage clearance v. Solve the following unknown parameters for Diesel Cycle with 6% cut-off. Compression ratio Percentage clearance Heat added and Heat rejected Wnet Efficiency Mean effective pressure
1.5 Develop an expression for the thermal efficiency of the air-standard diesel cycle as a function of the compression ratio r. = V1N2 and the expansion ratio re = V4 / V3. Assume the working fluid is an ideal gas, and the volume effect of moles of gas %3D generated is small relative to the effect of heating from combustion.
Provide a complete and logical solution for the problem. If linear interpolation is required in the problem, tabulated values is considered as a solution. Also, provide T-S or P-V diagrams for each problem. In an ideal Diesel engine compression is from 14.7 psia, 80°F, 1.43 ft3 to 500 psia. Then 16 BTU/cycle are added as heat. Make computations for k = 1.42. Find: a. Heat Rejected b. Net Work c. Efficiency d. Hp for 300 cycles/min
Thermodynamics The actual cycle of a 5T diesel engine, with a displacement of 7000 cm³ , 2,400 rpm is approximate to the theoretical cycle represented in the figure below, in which the custom rectangle has the area of the same cycle. A compression ratio is 17 and the thermal efficiency is 0.597 when 26.3% of the heat is provided isochorically. It is adopted that the active liquid has ϒ = 1.35 and R = 240J / KgK. To determine a) The values of p T and v at the main points of the cycle; b) The power of the cycle. c) Expansion work.
Describe the T-s diagrams accordingly by filling in the blanks. Use the sets of words given below for the correct description. reheat/ closed Ideal / Actual / vapour /cycle /Carnot/ Rankine/ Brayton/Ericsson/Stirling/regenerative/ open/with/a Nino To C @ 4 2. 5. 6. a b с e T f 1 4 In a two-stage gas turbine plant, with reheating after the first stage TA 25 decreases the thermal efficiencies. increases the thermal efficiencies. does not affect thermal efficiencies. Decreases the work ratio. increases the work ratio. does not affect the work ratio. equal. unequal. 2 5 The ideal compressor work and turbine work in a jet-propulsion engine is a b 9in 2/ qout Wpump.in High-pressure turbine 3 Reheating 6 Wturb,out Low-pressure turbine с not related to each other. d unpredictable (a) By writing an energy balance on the heat exchanger of a binary vapour power cycle, obtain a relation for the exit enthalpy regarding the mass flow rates of two fluids in terms of the other enthalpies. Take the…
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: Only the letters d,e, and f are only needed thank you! 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. - <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 four-cylinder four-stroke petrol engine with the following specifications: - The bore(diameter) = 20 cm - The stroke = 30 cm - The compression ratio = 8 - The indicated power = 33 KW - The engine speed = 2500 rpm - The indicated thermal efficiency = 35% - The friction power = 25 kW - The calorific value ( heating value) = 42000 kJ/kg . Determine the following: a) The indicated mean effective pressure. b) Thermal efficiency. c) Specific fuel consumption per hour. d) The Torque (given K = 1.4)
A Carnot engine having a 340 x 620 mm bore and stroke operates between 500 degree Celsius and 50 degree Celsius. The engine rejects 45 kJ of heat in the atmosphere while running at 400 rpm. Assuming a four stroke engine. Find a. thermal efficiency ( %) b. Wnet (kJ) c. Power Produced (kW)
The following data refer to a 12-cylinder, single-acting, two-stroke marine diesel engine:Speed: 150 rpmCylinder diameter: 0.8mStroke of piston: 1.2 mArea of indicator diagram: 5.5x 10-4 m2Length of diagram: 0.06 mSpring value: 147 MPa per mFind the net rate of work transfer from the gas to the piston in kW.
Two moles of an ideal diatomic gas is taken through the cycle shown. At the state 1, the pressure is P1 and the volume is V. If p =300 kPa and V, = 040 m', find p2, P3 and T3- Also compute W, Q. AE per cycle, and the thermal efficiency n. int isothermal Adiabatic Vị 3V1 Volume Pressure
Draw the schematic diagram of the problem; The steam used by a turbine is 5.50 kg/kw-hr at a pressure of 4.50 MPaa and a temperature of 373 degree Centigrade. The overall boiler effeciency is 85% with feedwater temperature at 165 degree Centigrade. a) How many kilogram of coal are required per kw-hr if calorific value of coal is 28,000 kJ/kg? b) If coal costs Php 440 per Metric Ton, what is the fuel cost per kw-hr? Copy the problem.
If there are five different Carnot engines (C1, C2, C3, C4 and C5) with low temperature reservoirs are at 7 "C, 10 °C, 13 "C, 15 °C and 18 °C respectively and each engine has efficiency of 60%. It is desired to increase the efficiency of each engine to 75 %. By using the selections statements calculate that how many degree the temperature of the source of each Carnot engine be increased separately. Do a subplot of bar and stem Plot of the temperature of the source against each heat engine Cl, C2, C3, C4 and C5. [Hint: Efficiency of heat engine is , Use else if else as selection statement. And take all the inputs by using input command and take all the outputs by using fprintf command.]