Wind_Energy_Analysis_Excel_File

%.00 @ 4G JO 100 I. Hw 1 Name: How many minutes you took ID. to solve this problem? Section: HW-1 Determine the magnitude and coordinate direction angles of the resultant force acting on the bracket. F = 450 N 45 60 F, = 600 N

B) The air flow to a four cylinder four-stroke engine is 2.15 m³/min. During a test on the engine the following data were recorded: Bore 10.5cm; stroke 12.5cm; engine speed 1200 rpm, torque 150 N.m, fuel consumption 5.5 kg/hr, calorific value of fuel, 43124 kJ/kg, ambient temperature 1-The brake thermal efficiency. and pressure are 20°C and 1.03 barş. Calculate: 2-The brakes mean effective pressure. 3-The volumetric efficiency.

1. Consider a 50 kW wind turbine, IC is $120,000, CF = 0.25, AOM is 0.01 * IC, FCR = 0.07. Retail rate of electricity is $0.11/kWh. Determine COE. 2. For a 1 MW wind turbine, IC = $1,600,000, FCR = 0.07, AEP = 3,000 MWh/year, LRC = $80,000/year, AOM = $0.008/kWh. Determine CF and COE. %3D

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A wind turbine is designed to produce the power of 5 kW. What is the percentage of mechanical and electrical conversion if the value of C, is 0.45, Wind speed is 5 m/s length of the blade is 15 m density of air is 1.12 kg/m?.

3.  Figure 1.35 indicates the velocity for (L/D)max occurs at 160 knots. What is the power required at this speed?

1. A Pelton wheel performance data are collected in the following table. Turbine speed (RPM) 3000 Shaft torque Water supply line pressure (bar) Water flow rate (L/min) (Ncm) 2.4 18.4 If water supply pipe diameter is 25 mm and turbine wheel diameter is 70 mm, calculate the hydraulic head in m, jet velocity in m/s, speed ratio, hydraulic power in W, mechanical power in W and efficiency of the turbine. What is the optimum speed (RPM) of the wheel (for maximum power)?

Consider a geographical location where a wind turbine is to be installed with the following data: Wind velocity V, = 40km/hr (11.11 m/s); Atmosphere pressure 101.3kPa, the wind temperature is 20°C, Blade diameter (Rotor swept diameter D = 10m). Determine the following: a) What is the maximum available power, P, available b) What can be the maximum extracted power P, extract c) What is the rotor speed w and torque t.

%94 KB/S Find : 1. dynamic load on each bearing due to the out-of-balance couple; and 2. kinetic energy of the complete assembly. [Ans. 6.12 kg: 8.7 N-m] L 2. 3. 4. 5. 1. 2. 5. DO YOU KNOW? Why is balancing of rotating parts necessary for high speed engines? Explain clearly the terms "static balancing' and 'dynamic balancing'. State the necessary conditions to achieve them. Discuss how a single revolving mass is balanced by two masses revolving in different planes. Chapter 21: Balancing of Rotating Masses .857 Explain the method of balancing of different masses revolving in the same plane. How the different masses rotating in different planes are balanced? OBJECTIVE TYPE QUESTIONS The balancing of rotating and reciprocating parts of an engine is necessary when it runs at (a) slow speed (b) medium speed (c) high speed A disturbing mass, attached to a rotating shaft may be balanced by a single mass m, attached in the same plane of rotation as that of my such that (a) (b) F For static…

Q20 An engine using fuel of calorific value 42000 kj/kg has abrake thermal efficiency of 30%. Find its brake specific fuel consumption in gram Answer [ 285.71 gm/kw_hr] 9.1 b-p-hr

QUESTION 1 Consider Port Plyllis wind site, assume you are installing a G80-2000 Wind turbine (k=2.67. and c=8.4m's at 10 m (from data fit). What is the . of increased aunual energy produced fiom 50m to 100m hub height. Consider the site roughness length is 0.017m. Use the Wind power calculator. A 9% B. 229 C. 12% D. 1%

A water truck drives slowly around a construction site, spraying water to keep dust down. A pump maintains a constant pressure of 100 kPa, gage, and the water is dispersed through 20 spray nozzles, each of diameter 1 cm. If the truck is initially filled with 4000 L of water, and the flow rate is constant, determine how long the truck can drive before a refill is needed. [57.0 s]

1.1 A four-cylinder diesel engine of 4-stroke type has stroke to bore ratio as 1.2 and the cylinder diameter is 12 cm. Estimate indicated power of the engine using the indicator diagram arrangement. Indicator card shows the diagram having area of 30 cm2 and length as half of stroke. Indicator spring constant is 20 x 103 kN/m2 and engine is running at 2000 rpm. Also find out mechanical efficiency of engine if 10% of power is lost in friction and other losses.

a) Develop an equation for the head (in ft) developed by the pump described by the chartas a function of flow rate (in gpm) when the pump uses a 9 ¾” impeller. b) Develop an equation for the pump efficiency as a function of flow rate (gpm) when the pump uses a 9 ¾” impeller.

Real Pressure, Barometer Room Volumetric Mass Rate of Trail Speed Difference Pressure Temp. Rate of Flow Flow No. ho Pa Ta. Va ma RPM cm H2O kN/m? K L/sec kg/sec 1200 20 24 25° 1700 25 35 25° 2000 35 45 25° 2250 45 55 25° 2500 55 60 25° 1. 2. 3. 4. 5. h, * P. Ta=25c° D=16.34 mm m, = 0.00001232* D² * V T. find Va,ma h, *T, Va = 0.003536* D² Pa

3:33 PM 67 portal.bartleby.com Hi Akshay gupta 1/ 10 > >> 59 min 54 secs 10 % A simplified turning moment diagram of a two stroke IC engine is shown in figure. The mean torque developed by the engine in N-M is 10 N-M -2 5 4 8 Continue DOO