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Thermal Design, 2nd Edition
book

Thermal Design, 2nd Edition

by HoSung Lee
June 2022
Intermediate to advanced
928 pages
29h 26m
English
Wiley
Content preview from Thermal Design, 2nd Edition

Appendix HCurve Fitting of Working Fluids

H.1 CURVE FIT FOR WORKING FLUIDS CHOSEN

Table H.1 Working fluid properties.

Acetone Ammonia Flutec PP9
0 °C 40 °C 80 °C 0 °C 40 °C 80 °C 0 °C 30 °C 90 °C
Latent heat, kJ/kg 564 536 495 1263 1101 891 98.4 94.5 86.1
Liquid density, kg/m3 812 768 719 638.6 579.5 505.7 2029 1960 1822
Vapor density, kg/m3 0.26 1.05 4.30 3.48 12.0 34.13 0.01 0.12 1.93
Liquid thermal conductivity, W/m°C 0.813 0.175 0.160 0.298 0.272 0.235 0.059 0.057 0.054
Liquid viscosity, Ns/m2 × 103 0.395 0.269 0.192 0.25 0.20 0.15 3.31 1.48 0.65
Vapor viscosity, 0.78 0.86 0.95 0.92 1.16 1.40 0.90 1.06 1.21
Ns/m2 × 105
Vapor pressure, bar 0.10 0.60 2.15 4.24 15.34 40.90 0.00 0.01 0.12
Vapor specific heat, kJ/kg °C 2.11 2.22 2.34 2.125 2.160 2.210 0.87 0.94 1.09
Liquid surface tension, N/m × 102 2.62 2.12 1.62 2.48 1.833 0.767 2.08 1.80 1.24

H.2 CURVE FITTING FOR WORKING FLUID PROPERTIES CHOSEN

H.2.1 MathCad Format

StartLayout 1st Row 1st Column ORIGIN colon-equal 1 1 colon 2nd Column Acetone 2nd Row 1st Column 2 colon 2nd Column Ammonia 3rd Row 1st Column 3 colon 2nd Column Flutec upper P upper P 9 EndLayout
italic t x colon-equal Start 3 By 1 Matrix 1st Row 0 2nd Row 40 3rd Row 80 EndMatrix
Latent Heat comma upper K upper J slash upper K g h y colon-equal Start 3 By 1 Matrix 1st Row 564 2263 98.4 2nd Row 536 2101 94.5 3rd Row 495 892 86.2 EndMatrix
StartLayout 1st Row 1st Column Blank 2nd Column h y 1 colon-equal h y Superscript left pointing angle 1 right pointing angle Baseline h y 2 colon-equal h y Superscript left pointing angle 2 right pointing angle Baseline h y 3 colon-equal h y Superscript left pointing angle 3 right pointing angle Baseline 2nd Row 1st Column Blank 2nd Column h s 1 colon-equal 1 spline left-parenthesis t x comma h y 1 right-parenthesis normal h 1 left-parenthesis normal t right-parenthesis colon-equal interp left-parenthesis t x comma h y 1 comma normal t right-parenthesis 3rd Row 1st Column Blank 2nd Column h s 2 colon-equal 1 spline left-parenthesis t x comma h y 2 right-parenthesis normal h 2 left-parenthesis normal t right-parenthesis colon-equal interp left-parenthesis t x comma h y 2 comma normal t right-parenthesis 4th Row 1st Column Blank 2nd Column h s 3 colon-equal 1 spline left-parenthesis t x comma h y 3 right-parenthesis normal h 3 left-parenthesis normal t right-parenthesis colon-equal interp left-parenthesis t x comma h y 3 comma normal t right-parenthesis EndLayout
Liquid density comma k g slash normal m cubed d l y colon-equal Start 3 By 1 Matrix 1st Row 812 638.6 2029 2nd Row 768 579.5 1960 3rd Row 719 505.7 1822 EndMatrix
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