Elements of Power Types and Calculations Computer Integrated

  • Slides: 25
Download presentation
Elements of Power Types and Calculations Computer Integrated Manufacturing © 2013 Project Lead The

Elements of Power Types and Calculations Computer Integrated Manufacturing © 2013 Project Lead The Way, Inc.

What is Work and Power? • Work is the energy transferred when a force

What is Work and Power? • Work is the energy transferred when a force displaces a mass • Power is the rate at which work is done • Typically mechanical, electrical, or fluid

Mechanical Calculations W = work, measured as ft-lb P = power measured as ft-lb/s

Mechanical Calculations W = work, measured as ft-lb P = power measured as ft-lb/s t = time measured as s 1 hp = 550 ft-lb/s

Example If Jessica moves her 112 pound (lb) body up 8 feet (ft) of

Example If Jessica moves her 112 pound (lb) body up 8 feet (ft) of stairs in 2. 3 seconds (s), how much work did she perform? How much power did she use? ft-lb Php = 390 s Php = 0. 71 hp W t 896 ft-lb P= 2. 3 s ft-lb P = 390 s P = ( 1 hp 550 ft-lb s )

Your Turn An escalator moves 84 people per minute from one floor of a

Your Turn An escalator moves 84 people per minute from one floor of a mall to the second floor. The mall’s floors are 24 ft apart, and the average passenger weighs 154 lb. How much power does the escalator need?

Solution Available from Teacher

Solution Available from Teacher

Torque • • Torque, , is a twisting force on a shaft Torque measured

Torque • • Torque, , is a twisting force on a shaft Torque measured as in. -lb or ft-lb = d. Fsinθ A force applied at 90 degrees allows the formula to be simplified to = d. F r = 90 F

Finding Torque 116 pounds of force is applied at the end of a lever

Finding Torque 116 pounds of force is applied at the end of a lever 2. 4 feet long. The force is applied at an angle of 90° to the lever. What is the torque produced? 116 lb 2. 4 ft pivot 90

Torque Calculation 116 lb 2. 4 ft pivot 90

Torque Calculation 116 lb 2. 4 ft pivot 90

Power Calculations Using the previous problem, how much power will be generated if the

Power Calculations Using the previous problem, how much power will be generated if the force is applied at a rate of 42 rpm? Convert rpm to rad/s Convert hp

Your Turn A shaft has a force of 32 pounds applied 5. 2 feet

Your Turn A shaft has a force of 32 pounds applied 5. 2 feet from the pivot point. What is the resulting torque? How much power is generated if the torque is produced at 2, 850 rpm?

Solution Available from Teacher

Solution Available from Teacher

Electrical Work and Power • Commonly measured as watt (W) • Also measured as

Electrical Work and Power • Commonly measured as watt (W) • Also measured as joule or horsepower

Electrical Calculations Electrical power is determined by the formula P = IV P =

Electrical Calculations Electrical power is determined by the formula P = IV P = power Measured as watt (W) and horsepower (hp) 1 hp = 745. 7 W 1 W = 0. 00134 hp V = voltage measured as volt (V) I = current measured as ampere (A)

Electrical Calculations A house is wired such that a typical circuit can allow 15

Electrical Calculations A house is wired such that a typical circuit can allow 15 A. Which two appliances can be used simultaneously without blowing a circuit? Hair dryer (1500 W, 110 V) 13. 6 A P = IV Microwave (1600 W, 120 V) 13. 3 A Toaster (400 W, 110 V) 3. 6 A Coffee maker (250 W, 120 V) 2. 1 A Dishwasher (1300 W, 120 V) 10. 8 A Flat iron (72 W, 110 V) 0. 65 A The hairdryer and microwave must be used alone. All other combination of two appliances would work.

Your Turn Assume that a shop is wired so that a typical circuit is

Your Turn Assume that a shop is wired so that a typical circuit is 20 amps. Which appliances can be used simultaneously? A. B. C. D. E. F. Band saw (1 hp, 110 V motor) CNC laser (200 W, 120 V) Laser engraver (3500 W, 220 V) Light (each) (400 W, 120 V) Computer (250 W, 120 V) 3 D printer (1600 W, 220 V) Solution Available from Teacher

Fluid Power • Operated by compressed fluid • Low load-carrying capacity • Requires mechanical

Fluid Power • Operated by compressed fluid • Low load-carrying capacity • Requires mechanical stops if not used with servomotors

Fluid Power Definitions Fluid Power The use of a fluid to transmit power from

Fluid Power Definitions Fluid Power The use of a fluid to transmit power from one location to another Hydraulics The use of a liquid flowing under pressure to transmit power from one location to another Pneumatics The use of a gas flowing under pressure to transmit power from one location to another

Fluid Calculations p = Pressure, measured in pounds per square inch (psi) F =

Fluid Calculations p = Pressure, measured in pounds per square inch (psi) F = Force, measured in pounds A = Area of the base of the fluid container F A A piston has the geometric shape of a circle so how is area calculated? If the piston diameter is 4 in. then what is the area?

F = Force being applied A = Area to which force is being applied

F = Force being applied A = Area to which force is being applied

Your Turn 62 pounds of force is applied to a ¾ inch pneumatic cylinder.

Your Turn 62 pounds of force is applied to a ¾ inch pneumatic cylinder. How much pressure is created in the cylinder?

Solution Available from Teacher

Solution Available from Teacher

Your Turn A hydraulic pressure of 175 psi is applied to a piston that

Your Turn A hydraulic pressure of 175 psi is applied to a piston that has a 3. 75 inch diameter and 8 inch stroke. What is the power produced by the piston that moves its full stroke in 2. 25 s?

Solution Available from Teacher

Solution Available from Teacher

Image Resources Microsoft, Inc. (2012). Clip art. Retrieved from http: //office. microsoft. com/en-us/clipart/default. aspx

Image Resources Microsoft, Inc. (2012). Clip art. Retrieved from http: //office. microsoft. com/en-us/clipart/default. aspx

Elements of Power Types and Calculations Computer IntegratedElements of Power Types and Calculations Computer Integrated
Variables Constants and Calculations Calculations Although the calculationsVariables Constants and Calculations Calculations Although the calculations
Elements of Power Types and Calculations What isElements of Power Types and Calculations What is
Elements of Power Types and Calculations What isElements of Power Types and Calculations What is
Statistical Power And Sample Size Calculations Minitab calculationsStatistical Power And Sample Size Calculations Minitab calculations
Statistical Power And Sample Size Calculations Minitab calculationsStatistical Power And Sample Size Calculations Minitab calculations
Teach Computer Science Calculations teachcomputerscience com Calculations IntroTeach Computer Science Calculations teachcomputerscience com Calculations Intro
Power Calculations for GWAS What is Power PowerPower Calculations for GWAS What is Power Power
Four Types Four Types Four Types Four TypesFour Types Four Types Four Types Four Types
COMPUTER INTEGRATED MANUFACTURING 1 ABSTRACT Computer Integrated ManufacturingCOMPUTER INTEGRATED MANUFACTURING 1 ABSTRACT Computer Integrated Manufacturing
Mole Calculations 1 Chemical Calculations Atoms and moleculesMole Calculations 1 Chemical Calculations Atoms and molecules
Acids and Bases Jeopardy Acid Calculations Base CalculationsAcids and Bases Jeopardy Acid Calculations Base Calculations
Water Balance Calculations BASIC CALCULATIONS COMMERCIAL AND PHYSICALWater Balance Calculations BASIC CALCULATIONS COMMERCIAL AND PHYSICAL
Progression in Calculations Understanding and Using Calculations ForProgression in Calculations Understanding and Using Calculations For
Atoms and Elements Geophysical Science Elements Elements areAtoms and Elements Geophysical Science Elements Elements are
Chapter 4 Elements Atoms and Ions Elements ElementsChapter 4 Elements Atoms and Ions Elements Elements
Elements and Atoms Elements Elements are a typeElements and Atoms Elements Elements are a type
Integrated BTL Marketing Communications Integrated BTL Integrated MarketingIntegrated BTL Marketing Communications Integrated BTL Integrated Marketing
INTEGRATED CIRCUITS INTEGRATED CIRCUITS In electronics an integratedINTEGRATED CIRCUITS INTEGRATED CIRCUITS In electronics an integrated
Percentage Calculations Percentage Calculations Dont let percentages foolPercentage Calculations Percentage Calculations Dont let percentages fool
Inverse Normal Calculations Inverse Normal Calculations Consider aInverse Normal Calculations Inverse Normal Calculations Consider a
Dry Cargo Calculations Dry Cargo Calculations It wouldDry Cargo Calculations Dry Cargo Calculations It would
Medication Calculations Randall Stennett RN MSN Medication CalculationsMedication Calculations Randall Stennett RN MSN Medication Calculations
LAY OUT CALCULATIONS TYPICAL YARD Why Layout CalculationsLAY OUT CALCULATIONS TYPICAL YARD Why Layout Calculations