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Baldor Energy Savings Tool Version 3.0

Baldor Energy Savings Tool Version 3.0. BE$T - an Overview. Baldor Energy Savings Tool Version 3.0. (A software estimating tool for electric motor energy calculations.). Baldor Energy Savings Tool. A software package designed to assist you with Formal energy audits

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Baldor Energy Savings Tool Version 3.0

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  1. Baldor Energy Savings Tool Version 3.0

  2. BE$T - an Overview Baldor Energy Savings Tool Version 3.0 (A software estimating tool for electric motor energy calculations.)

  3. Baldor Energy Savings Tool • A software package designed to assist you with • Formal energy audits • Premium efficient motor upgrades • ASD energy savings calculations • Motor Management Evaluations • Project quotations • Quick motor nameplate data reference • Includes various calculators for easy reference

  4. BE$T 3.0 - Agenda • Saving Energy • Program Basics • Example problems

  5. Part I – Saving Energy You save energy by improving the overall efficiency of the driven system. There are many energy wasters within a given system, but one component that should always be checked is the power input side or the electric motor. The BE$T program concentrates on improving the power input of the system. BE$T calculates the estimated energy that can be saved by using Premium Efficient motors and drives where applicable. Payback periods for motor efficiency upgrades are calculated and motor replacement timetables are recommended.

  6. Why is Motor Efficiency Important? - Wasted Energy $ • 10 Hp motor running at full load • Measured Power in - 8,025 Watts • Power out = 10 Hp x 746 = 7460 Watts • Efficiency = Power Out / Power In • Efficiency = 7460 / 8025 • Efficiency = .930 or 93.0%

  7. What is Higher Efficiency Worth? Even a 4.5 point efficiency gain is important. 40 HP Super-E with 94.5% efficiency compared to standard motor with 90% eff. Operating 50 weeks/year

  8. BE$T – Basic Motor Calculations Annual Motor Operating Cost • To find the annual operating cost of one motor (HP * .746Watt/HP * %ML * Hours * ¢/kWh) / Efficiency • To find the annual operating cost difference between two motors (HP * .746Watt/HP * %ML * Hours * ¢/kWh) / {1/(Enew– Eold)} %ML = percent motor load, Hours = annual operating hours, E = efficiency

  9. Obtain Even More Energy Savings by Using Drives on Variable Torque Loads Potential Energy Savings Air conditioning 20-25% Compressors 20-25% Central refrigeration 25-35% Blowers and fans 30-35% Feedwater pumps 30-50% Source: Wisconsin Center for Demand-Side Research

  10. Where do Drive Savings Come from? Look between the curves. Typical variable torque Fan and Pump Curve The savings occur between the curves 160.21.1

  11. Why does this work?Variable Torque Pump and Fan Loads use the Affinity Laws, the required HP is a cubic function of rpm. 100% 75% Fan or Pump Load Curve % LOAD 50% 25% %Power ~ Speed3 0% 0% 25% 50% 75% 100% % SPEED / % FLOW 110.8.6

  12. In words, using an adjustable speed drive saves energy by? Reducing the speed of a variable torque pump or fan significantly reduces the energy usage of the driving motor. The “why” can be summarized by a set of rules called the affinity rules. • Flow produced by the system is proportional to the motor speed. • Pressure produced by the system is proportional to the motor speed squared. • Horsepower required by the system is proportional to the motor speed cubed.

  13. An Example:A adjustable speed drive (ASD) running a variable torque load at 50% speed needs to deliver only 12.5% of the horsepower required to run it at 100 percent speed.

  14. Not every driven system can benefit from using an Adjustable Speed Drive • A constant torque system would not use a drive to save energy, but may use one for convenience. • If you have a variable torque system. • Look at the typical operating points or load profile of the system throughout the day to see if the system could benefit from a drive. • The load profile determines the amount of energy savings that is possible. • Does the system require full power all the time? • Does the load on the system vary throughout the day? • The load profile can be set in the program.

  15. Load Profile - Excellent ASD Candidate

  16. Load Profile - Poor ASD Candidate

  17. Load Profile - Average ASD Candidate

  18. Part IIProgram Basics & Many New Features

  19. BE$T – Main ScreenSingle Motor View Select single motor view here. Inputs Preferences/Views Alternatives

  20. BE$T – Multiple Motors View Toggle Buttons Multiple motor buttons

  21. 1st Set the Preferences & Global Settings Global Settings

  22. Explore the Menu – Projects dropdown Menu Bar

  23. Explore the Tools Menu

  24. Explore the Help Menu

  25. Most entry fields use Dropdown Boxes to select the appropriate data. Enclosure example below. Dropdown Choices

  26. If you don’t know the existing motor’s efficiency use the built in Efficiencies table. Click in the Efficiency Box, this data pops up.

  27. BE$T – Built in Repair Costs Great New Feature – Rewind Cost Click in the replacement net/repair box to insert this cost

  28. Help Button are available to explain data fields Help Buttons

  29. Once the data is filled in for a motor click on the “Instant Calculation Button” to get the calculations

  30. Instant Calculation Results Energy Used Payback Selected Motors Search Aid

  31. Look at the Payback Months!You want “fast” Paybacks What is Payback? • The Time it Takes to Recoup the Extra Cost of a Premium Efficiency Motor by Reduced Energy Consumption • ((Baldor Motor Cost – Replace/Repair Cost – Rebates) / Annual Energy Savings) * 12 • Much Simpler to Determine Than Present Value Analysis (used in some energy software)

  32. Click on the Blue catalog number to see the Motor’s Data

  33. You can choose a motors from the Potential Match List BE$T sorts motors by highest efficiency then lowest List Price. You can now choose to override this basic rule and select your own motor.

  34. For multiple motors projects selecting the “Project Cost Button” combines all motors in a project. Click to calculate the cost of the entire project.

  35. Project Cost Analysis Results Summarized Project Data Raw Data Custom Report Standard Reports

  36. Excel Export showing Raw Data – can be imported as a new project

  37. Excel Export Custom Report Template, can add a customer logo

  38. Standard Reporting of Project Summary Click for printed reports

  39. Standard Report Details

  40. Standard Summary Report

  41. How add a drive to a motor? Click the ASD Checkbox Click if Motor has an ASD

  42. Fill in the ASD Data Application Edit Load Profile Add ASD costs Existing ASD? Lastly click the OK button

  43. To see the ASD graph, 1st click on Instant Cost Calculation button on the input screen then the ASD Graph Button Click Here to See Graph

  44. The ASD Graphs and data for each motors has been transferred to an Excel Spreadsheet

  45. How Do you input Data? • Two Methods • Direct entry on the desktop • Import an Excel file

  46. To Import data, go to the Projects Menu at the top of the screen and select “Import a Project” then choose a new or existing scenario.

  47. The “Help with Importing” Button Shows an Importing Template Example

  48. How do I setup the Motor Management Options? These options are found on the global settings menu. • Several rules of thumb are employed to establish a formal policy for the repair and replacement of existing motors. These are the: • Repair/Replace HP breakpoint • Repair/New Price Ratio • Payback Months • Policies are best established before a failure. Being prepared for and knowing what to do is a critical part of a Motor Management Plan.

  49. Motor Management - Repair/Rewind Breakpoint

  50. Motor Management - Payback Months

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