CHEMENG 2I03 Study Guide - Final Guide: Labatt Brewing Company, Dofasco, Pirani Gauge
18 Apr 2015
School
Department
Course
Professor
Document Summary
Free cooling: using cooler outdoor air to cool the building. Variable air volume control system does not maximize fresh air delivered to room. Ep transducer: converts electronic signals into pneumatic movement (open/close dampers/steam valves) Systematic error does not change with repeated measurements; occurs regardless. Zero-order uncertainty (uo) is related to resolution of sensor (smallest increment reading) Design-state uncertainty = minimum error obtained under any circumstance. Regression analysis >> least sum of squares method. Residuals show if appropriate regression model was used; whether samples were randomly collected. Uncertainty of q (v/t) using equation: a = (xy/z) *** formula sheet! Hysteresis error: affects calibration; sensitive to sequential testing method (correct error due to last) Zero-order uncertainty = (resolution)/2 *** make sure to round! Given resolution and instrument uncertainty >> add to get design-stage uncertainty. Given sample mean and variance --> how to determine #measurements required for 95% confidence. Exponent term in expression means it"s not linear regression.
