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Conversion Editor

Conversion Editor. U.S. Nuclear Regulatory Commission Rockville, Maryland Pacific Northwest National Laboratory November 15-17, 2005. (Units) Conversion Editor. To Existing Measures, Edit Existing Unit Conversions and Add New Unit Conversions. Factors. Dependent unit goes here . Unit.

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Conversion Editor

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  1. Conversion Editor U.S. Nuclear Regulatory Commission Rockville, Maryland Pacific Northwest National Laboratory November 15-17, 2005

  2. (Units) Conversion Editor 2

  3. To Existing Measures,Edit Existing Unit Conversions andAdd New Unit Conversions 3

  4. Factors Dependent unit goes here Unit Using the equation of a straight line: y = mx + b Unit Value Unit Slope Base Unit Value Base Unit Y-Int Grayed out value Dependent variable User-defined slope User-defined value for independent variable Independent variable User-defined y-intercept = + Meaning: 1 Independent variable Grayed out value Dependent variable equals (Units) Conversion Editor A Green text box identifies user-defined input 4

  5. Example 1 Define the new Unit “ft” (for feet) as a function of the Base Unit “m” (for meters) ft = independent variable m = dependent variable y ft = 3.2802 (x m) Factors ft Unit Using the equation of a straight line: y = mx + b Unit Value Unit Slope Base Unit Value Base Unit Y-Int 3.2808 ft 3.2808 1 m 0 = + Meaning: equals 1 m 3.2808 ft 5

  6. Example 2 Define the new Unit “F” as a function of the Base Unit “C” C = independent variable F = dependent variable y F = 1.8 (x C) + 32 Factors F Unit Using the equation of a straight line: y = mx + b Unit Value Unit Slope Base Unit Value Base Unit Y-Int 212 F 1.8 100 C 32 = + Meaning: equals 1 C 33.88 F 6

  7. Edit Degrees F, and Input Correction Incorrect conversion, so “Edit” 7

  8. There are 33.8 F to one C User-defined F = 9/5 C + 32 8

  9. Example 3 Define the new Unit “nm” (for nanometers) as a function of the Base Unit “cm” (for centimeters): cm = independent variable nm = dependent variable y nm = 107 (x cm) Factors nm Unit Using the equation of a straight line: y = mx + b Unit Value Unit Slope Base Unit Value Base Unit Y-Int 1.0E+07 nm 1.0E+07 1 cm 0 = + Meaning: 1 cm 1.0E+07 nm equals 9

  10. Add the Conversion “nm” 10

  11. There are 107 nm to one cm User-defined 11

  12. Example 4 Define the new Unit “K” as a function of the Base Unit “C” C = independent variable K = dependent variable y K = x C + 273 Factors K Unit Using the equation of a straight line: y = mx + b Unit Value Unit Slope Base Unit Value Base Unit Y-Int 274 K 1 1 C 273 = + Meaning: equals 1 C 274 K 12

  13. Add the Conversion degrees Kelvin “K” 13

  14. There are 274 K to one C User-defined K = C + 273 14

  15. Add New Measures (e.g., Energy)andUnit Conversions (e.g., Joules, Calories, etc.) 15

  16. Example 5 Add the Measure of Energy Add Energy 16

  17. Add a Measure of “Energy” with a Base Unit of “Joules”

  18. Add Units of Calories “cal”

  19. 1 cal = 4.184 J or 1 J = 0.239 cal

  20. ProblemAdd the following Energy Units • 1 J = 0.239 cal = 6.238E+18eV = 9.869E-03 lit-atm = 0.738 ft-lbs = 9.483E-4 BTU • 1 cal = 4.184 J = 2.61E19 eV = 4.129E-2 lit-atm • 1 BTU = 778.3 ft-lbs = 1054.5 J • 1 BTU equals how many calories? 20

  21. Relationship Between BTU and Joules 1 BTU = 1054.5 J or 1 J = 9.48317E-4 BTU Note the difference in significant figures

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