Lab 2 Recip Engines

The following particular refer to a two row velocity compounded Impulse steam turbine (wheel). Steam velocity at Nozzle exit-600 m/sec, Nozzle angle - 16°, Mean Blade velocity = 120 m/sec. Exit angles; first row of moving blades - 18° Fixed guide blades = 22⁰ Second row of moving blades 36° Steam flow rate=5kg/sec. Blade friction coefficient=0.85 Determine (1) Tangential thrust

‘The following particulars refer to a two-row velocity-compounded impulse wheel which forms the frst stage of a combination turb Steam velocity at nozzle outlet 1630 mis Mean blade velocity $125 mls Nozzle angle :16° Outlet angle, first row of moving blades 18 Outlet angle, fixed guide blades 1220 Outlet angle, second row of moving blades :36° Steam flow rate 26kgs ‘The ratio of the relative velocity at outlet to that at inlet is 0.84 for all the blade. Determine (@) The velocity of whirl. __} (b) The tangential thrust on the blades. (c) The axial thrust on the blades.

Specific fuel consumption of a four-stroke internal combustion engine at a given rotational speed is 0.322 kg/kW-h value is minimum. Spindle power at this rotation rate is 123 kW, volumetric efficiency is 95% and air-fuel rate is 15. The number of rotations of this engine is calculated by subtracting 1.5 from the number of rotations giving the minimum specific fuel consumption. time, spindle power 162 kW, specific fuel consumption 0.394 kg/kW-h and volumetric efficiency 85%. a) Calculate the air-fuel ratio in this case. and By what percent has the efficiency of the engine changed?

Explain and compare the mechanical efficiency of two and four-stroke engines.

Using the basic relations given below and detailing your method and assumptions,Develop all the analytical relations required to:1) Determine the temperatures and pressures at all stages of an ideal air-standard SIOtto cycle analysis2) Show that the thermal efficiency of any internal combustion engine can besimplified as a ratio of temperature differences 3) Discuss the concept of Brake Specific Fuel Consumption (BSFC) and propose a rationale for the Figure 1 below (in other words, explain why the BSFC is decreasingbefore increasing with engine speed)

A four-cylinder, four stroke cycle, single-acting Diesel Engine uses the following data: Rated Power output=82kW; Engine size=203.2mm x 254mm; Friction Power=11.19kW RPM=500; Area of Indicator Card=1161.28mm2 ; Length of indicator card=39.37mm; Spring scale=21.71kPa/mm Determine: Mechanical Efficiency, % Brake Mean effective pressure, kPa Engine displacement, m 3 /s Piston speed, m/s

Discuss the importance and benefits of air standard cycle analysis in engine componentsdesign. Provide at least three key points and justify your answers.

‘The following particulars refer to a two-row velocity-compounded impulse wheel which forms the frst stage of a combination turb Steam velocity at nozzle outlet 1630 mis Mean blade velocity 1125 mls Nozzle angle 116° Outlet angle, first row of moving blades 18 Outlet angle, fixed guide blades 22 Outlet angle, second row of moving blades :36° Steam flow rate 26kg's ‘The ratio of the relative velocity at outlet to that at inlet is 0.84 for all the blade. Determine (a) The velocity of whirl.

1. Assess the different types of industrial compressor and identify justifiable applications for each while focusing on the working principle and flow direction2. Discuss compressor faults and potential hazards

Course: Power Plant Question: 5 In some application V-8 four stroke petrol engine is needed to produce 190 kW at 4420 rpm. At the given engine speed the air-fuel ratio (A/F) is 15/1 and the volumetric efficiency is 70 percent. Also at the compression ratio of 10/1, the brake thermal efficiency is considered to be 35%. The calorific value of the fuel used is 44200 kJ/kg and the free air conditions are 1 bar and 15 0C. The bore to stroke ratio (B/S) is 0.8 for the engine. Solve the problem to find the following: a. Engine displacement b. Size of the bore c. Size of the stroke

A 4 stroke gas engine develops 4.5kw at 180rpm at full load.Assuming the following data, calculate the relative efficiency based on indicated power and fuel ratio used.Volumetric efficiency=87% mechanical efficiency=74% clearance volume=2100cm cube,swept volume=9000cm cube,fuel consumption=5 Meter cube per hour,caloric value of fuel =16750

Interpret the engine performance based on the established parameters such as mechanical efficiency, engine efficiency and thermal efficiency and demonstrate the effect of altitude in the engine performance.

A 739 KW diesel-engine power plant has the following data: fuel rate, 245 liters per hour at 22 C with a specific gravity of 0.922; coolant flow rate, 1135 liters/min, with inlet and outlet temperature of 25 C and 35 C, respectively; air temperature of 18 C at a volume flow rate of 5071 m°/hr; exhaust gas temperature of 400 C. If the engine is an 8-cylinder, 375 mm x 457 mm x 267 rpm and the generator efficiency is 93 %, conduct an engine heat balance based on the above data

Research on the History and developments on Internal Combustion Engines.

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. An ideal Otto engine, operating on the hot-air standard with k = 1.34, has a compression ratio of 5. At the beginning of compression, the volume is 6 ft3, the pressure is 13.75 psia and the temperature is 100°F. During the constant-volume heating, 340 BTU are added per cycle. Find the following: a. Percent clearance b. Temperature after heat addition c. Pressure after heat addition d. Efficiency

HANDWRITTEN AND FINAL ANSWER MUST BE IN ENGLISH UNITS. Show solution.  An experimental gas turbine engine is under development to increase its mechanical efficiency. It has a turbine efficiency of 95% and compressor efficiency of 85%. The following parameters are provided: P1 = 550 kPa, T1 = 25 deg C, rp = 5.5, T3 = 1450 deg C, Wnet = 5500 kW. Compute for the (a) flow rate and (b) mean effective pressure. Consider Ethane as your working fluid.

Describe the operating principles of a wind turbine based wind power generation system. Besides, list the major advantages and disadvantages of such systems.

Essay Topic: Define the following terms related to reciprocating engines: cycle, stroke, bore, clearance volume, volume displacement, clearance percentage, compression ratio, cut-off ratio, pressure ratio, and thermal efficiency.

Identify the technologies that will use gas turbines and internal combustion engines in Mauritius. Some information given

High pressure turbine blades experience the most hostile combination of conditions of any component in a gas turbine engine. Briefly describe this environment and design measures intended to improve turbine blade survival.

Provide examples of event-driven applications in the automotive industry for vehicle safety and efficiency.

6. The blade speed in a simple stage is 150 m/sec and the nozzle angle is 18 degrees. The velocity of the steam leaving the nozzles ia 320 m/sec and the bucket entrance and exit angles are both 33 degrees. The bucket velocity coefficient is 0.89. Find the relative velocity leaving the buckets, m/sec.A. 163.8 B. 173.8 C. 183.8 D. 193.8

Having determined the efficiency of different above engines, you should review these efficiencies by comparing them with each other and comparing values with published efficacy data for these types of engines. I found the efficiency. I just need a clear explanation of the above theory part.  φ = 0.2

FLUID POWER TRCHNOLOGY  2) Describe Kaplan, Francis and Pelton turbines based on working principle and flow path.

This is a question from Sustainable Energy 2nd Edition by Richard Dunlap: If a high head hydroelectric facility is considered to be carbon free, what is the annual reduction in CO2 emissions for a 1000 MWe hydroelectric station compared to a 1000 MWe coal-fired station operating at 38% efficiency? Assume both stations have a 70% capacity factor.

A diesel engine has a clearance volume of 35cc, displacement volume of 1000cc and the volume after combustion of 73cc. Calculate the theoretical thermal efficiency of the cycle.a. 69.0440% b. 69.0441% c. 69.0442% d. 69.0443%

Please sketch by hand and explain the stuffing box in marine diesel engines.

Consider a CI engine with a fuel injector mounted at the center of the cylinder head. The bore of the engine is 10 cm. The injector has a nozzle diameter of 0.05 mm and a discharge coefficient of 0.65. The fuel injection pressure is 600 bar. If the average cylinder pressure during injection is 50 bar and the density of the fuel is 800 kg/m3, estimate the time for a fuel particle to reach the cylinder wall.

Results and Discussion about the basic operating principle of an internal combustion engine, Identifying the different parts of a diesel and gasoline engine as a source of power, and determine the uses of diesel and gasoline engines in agriculture.

THERMODYNAMICS The compression ratio of 20:1 of a diesel engine with an input pressure of 95 kPa, 290 K, state 1, and a volume of 0.5 L. The maximum cycle temperature is 1800 K Determine the maximum pressure, the net-work, the cutoff ratio, and the thermal efficiency. (By varying specific heat). Show Complete Solution on a Paper.