File:Hailwood-Horrobin_EMC_graph.svg
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Summary
DescriptionHailwood-Horrobin EMC graph.svg |
English: Equilibrium moisture content of wood versus relative humidity of the surrounding air. |
Date | |
Source | Own work |
Author | Hankwang |
SVG development InfoField | |
Source code InfoField |
# Gnuplot script to generate EMC plot, for Gnuplot version 4.2.
# Author: User hankwang on Wikipedia (2010).
# Equations taken from the Wikipedia article as of 2010-12-31.
# TF = temperature in deg F, TC = temp. in deg C
W(TF) = 330 + 0.452*TF + 0.00415*TF**2
k(TF) = 0.791 + 4.63e-4*TF - 8.44e-7*TF**2
k1(TF) = 6.34 + 7.75e-4*TF - 9.35e-5*TF**2
k2(TF) = 1.09 + 2.84e-2*TF - 9.04e-5*TF**2
emcx(TF,k1,k2,kh)=1800./W(TF) * (kh/(1-kh) + (k1*kh+2*k1*k2*kh**2)/(1+k1*kh+k1*k2*kh**2))
emcF(TF,h)=emcx(TF,k1(TF),k2(TF),k(TF)*h)
C2F(TC)=TC*1.8+32
F2C(TF)=(TF-32)*5.0/9
emcC(TC,h)=emcF(C2F(TC),h)
set xlab 'Relative humidity (%)'
set xra [0:100]
set ylab 'EMC (%)'
set key top left
set term svg enhanced size 480,320
set outp 'emc.svg'
plot \
emcC(0,x*0.01) ti '0 ^oC (32 ^oF)' lt -1 lw 2, \
emcC(30,x*0.01) ti '30 ^oC (86 ^oF)' lt 3 lw 2, \
emcC(60,x*0.01) ti '60 ^oC (140 ^oF)' lt 2 lw 2, \
emcC(120,x*0.01) ti '120 ^oC (248 ^oF)' lt 1 lw 2
set outp
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Items portrayed in this file
depicts
31 December 2010
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 09:17, 31 December 2010 | 480 × 320 (17 KB) | Hankwang | {{Information |Description={{en|1=Equilibrium moisture content of wood versus relative humidity of the surrounding air. }} |Source={{own}} |Author=Hankwang |Date=2010-12-31 |Permission= |other_version |
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Image title | Produced by GNUPLOT 4.2 patchlevel 5 |
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