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CE263 Environmental Engineering Fundamentals Course Notes: Chapter 2Engineering Calculations

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Fundamental dimensions: Force, mass, length, time. Derived dimensions. Density = Mass/Volume ... Importance of back-of-the-envelop calculations. Information Analysis ... – PowerPoint PPT presentation

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Title: CE263 Environmental Engineering Fundamentals Course Notes: Chapter 2Engineering Calculations


1
CE-263 Environmental Engineering
FundamentalsCourse Notes Chapter
2-Engineering Calculations
  • Dr. Nikolaos P. Nikolaidis
  • Civil and Environmental EngineeringThe
    University of Connecticut - Storrs

2
Engineering Dimensions and Units
  • Fundamental dimensions Force, mass, length,
    time
  • Derived dimensions
  • Density Mass/Volume
  • Concentration, Ca Ma/(VaVb)
  • Flow rate Volumetric vs. Mass
  • Qv V/T vs. Qm M/T
  • Residence Time, t V/Q

3
Approximations
  • Define problem
  • Simplify
  • Calculate the answer
  • CHECK your results - Do they make sense
  • Example Consider a spherical cow!
  • Importance of back-of-the-envelop calculations

4
Information Analysis
  • Use of probability and statistics in
    Environmental Engineering
  • Use of normal distribution for the calculation
    of return period and of exceedances of water
    quality violations

5
Normal Distribution
6
Example 2.8 - Cumulative Size Distribution
7
Example 2.10 - WWTP BOD Effluent
8
Example 2.10 - WWTP BOD Effluent
9
Example 2.10 - WWTP BOD Effluent
10
Example 2.11 - Grouped Data Analysis
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