Rotational speed of the flywheel

Assignment Help Civil Engineering
Reference no: EM132416605

Problem: A wind turbine stores its peak energy output in a flywheel whose characteristics are:

  • Solid disk of uniform thickness
  • Diameter = 4.0 m
  • Weight = 15,000 kg.

Assume that the wind speed has suddenly slowed down to where the turbine is no longer generating any power. The rotational speed of the flywheel at that time is 50,000 RPM. For how long can the energy stored in the flywheel supply the needs of a building whose steady load is1000 kW? Assume that the rotational speed of the flywheel can be reduced to 0.

Reference no: EM132416605

Questions Cloud

Write essay on the approaches to psychological profiling : For the Unit 4 Assignment, write a 4-5 page informative essay on the approaches to psychological profiling. In your essay, include the following.
Identify types of queries an officer may retrieve from ncic : Create an 8-10 slide PowerPoint Presentation incorporating speaker notes outlining the following: Identify three types of queries an officer may retrieve from.
Determine the pressure at which reheating takes place : Determine the pressure at which reheating takes place. Also show the cycle on a T-s diagram.
What is the claimed rotor power coefficient : An investor comes to you and tells you that a company wants to invest in a new turbine design with the following performance characteristics:
Rotational speed of the flywheel : Assume that the wind speed has suddenly slowed down to where the turbine is no longer generating any power. The rotational speed of the flywheel at that time
What was going on during that time regarding police system : What was going on during that time regarding the police and justice system. How was his early life, how did he become one of the most famous ruthless gagster.
Upper reservoir supplies the average electrical load : How many hours could the upper reservoir supplies the average electrical load of the community when discharging to the lower reservoir?
Discuss the current immigration debate : In a 3-4 page paper discuss the current immigration debate. What are the most recent developments in the debate over immigration and crime?
Estimate the temperature of this wire when heated : The plastic has a thermal conductivity of 0.3 W/m-K and is 0.5 mm thick. Estimate the temperature of this wire when heated at a power of 1 W.

Reviews

Write a Review

Civil Engineering Questions & Answers

  Derive an equation for the factor of safety of the slope

Derive an equation for the factor of safety of the slope in Figure P16.2 using the mechanism shown.

  Calculate the percentage of change in total volume

Calculate the percentage of change in total volume with respect to its initial volume when a specimen of this clay is completely dried from a water content of 80%. Assume that the clay remains saturated from liquid limit to shrinkage limit.

  Determine tthe allowable soil bearing pressure with respect

Three soil borings were performed at the site of a structure and the SPT blow counts at each depth are shown below. (Do not make any corrections to the blow counts.

  Find the mole fraction and mass fraction of each component

A gaseous mixture of carbon monoxide, carbon dioxide, methane and nitrogen gas is analyzed with a gas chromatograph (GC). The output takes the form of a series of peaks where each peak corresponds to a component and a peak area (A) is proportional to..

  Assume the pressure increased linearly with volume

A certain fluid at 15 psia is contained in a cylinder behind a frictionless piston. The initial volume of the fluid is 300 in^3. The fluid expands to a volume of 450 in^3 while the pressure increases to 25 psia

  Explain what happens to the reading in the manometer

a pitot-static tube connected to a differential manometer measuring the fluid velocity in a pipe. what happens to the reading in the manometer, h, if the fluid velocity in the pipe is halved

  Determine the force and couple at o equivalent to the two

Head loss and sunshine striking a pipeline cause the temperature of the water flowing inside to rise by 2 degrees Celsius between two measuring points. Find the heat gain in J/N and cal/N.

  Determine the stretch of the cord at the angle of cord

The two disks each have a mass of 18 kg and are attached at their centers by an elastic cord that has a stiffness of k= 1.6 kN/m. Determine the stretch of the cord when the system is in equilibrium and the angle of the cord.

  What are its density specific weight and specific gravity

The 10mm diameter rod is made of Kevlar 49. Determine the change in length and the change in diameter.

  How long does doug have to open door before fatality limit

Doug decides to use a turkey fryer to prepare the Thanksgiving turkey. Due to cold weather, he prepares the turkey with the door closed, limiting air exchage (Q) within the 40 m3 garage to 0.2 m3 min-1

  Determine the pressures at points h and w

A lubrication system in a coal mining dragline, pumps 140 mL/s of oil with a density of 810 kg/m3 and viscosity of 0.01 kg/m.s, across the full height

  Calculate bulk specific gravity nd apparent specific gravity

A sample of coarse aggregate weights 1072 grams when oven-dried, 1091 grams when saturated surface-dried, and 667.6 grams when submerged. Calculate the bulk specific gravity, apparent specific gravity, and percent absorption.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd