The data shown is for the saturation temperature as a function of pressure for R 134a Develop 5 different curve fits (a) Exponential p Aexp(aT) (b) 2nd order polynomial (c) Power Law p BTb (d) Logarithmic p A Bln(T) (e) Clausius Clapeyron ln(P) A B T Temperature (K) 233 237 241 245 247 249 251 253 255 257 Vapor Pressure (kPa) 51 2 62 9 76 7 92 7 101 7 111 3 121 7 132 7 144 6 157 3

Question: The data shown is for the saturation temperature as a function of pressure for R-134a. Develop 5 different curve fits: (a) Exponential [p = Aexp(aT)]

The data shown is for the saturation temperature as a function of pressure for R-134a. Develop 5 different curve fits:

(a) Exponential [p = A·exp(aT)]

(b) 2nd order polynomial

(d) Logarithmic [p = A + B·ln(T)]

(e) Clausius-Clapeyron: [ln(P) = A – B/T]

Temperature (K) 233 237 241 245 247 249 251 253 255 257

Temperature (K) 233 237 241 245 247 249 251 253 255 257 Vapor Pressure (kPa) 51.2 62.9 76.7 92.7 101.7 111.3 121.7 132.7 144.6 157.3

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