wrote:

homeowner questions go in alt.home.repair.

Sez who?

20 GH=98'house conductance (Btu/h-F)
30 TA=106'average air temp (F)
40 WA=.00384'average humidity ratio
50 PS=EXP(17.863-9621/(TA+460))'outdoor vapor pressure at 100% RH ("Hg)
60 PA=29.921/(1+.62198/WA)'vapor pressure in outdoor air ("Hg)
70 RA=100*PA/PS'outdoor RH (%)
80 TC=80'comfort temp (F)
90 WC=.012'comfort humidity ratio
100 PC=60*.075*(WC-WA)
110 CFM=GH/(1000*PC/(TA-TC)-1)'exhaust fan size (cfm)
120 P=PC*CFM'water usage (lb/h)
130 GPD=24*P/8.33'water usage (gpd)
140 PW=EXP(17.863-9621/(TC+460))'vapor pressure of wet surface ("Hg)
150 PH=29.921/(1+.62198/WC)'vapor pressure of house air ("Hg)
160 RC=100*PH/PW'humidistat setting (%)
170 A=10*P/(PW-PH)'wet surface area (ft^2)
180 PRINT TA,RA,TC,RC
190 PRINT CFM,P,GPD,A

106 7.732043 80 54.07039

237.6865 8.727848 25.14626 181.4229

Nick

On 19 Jan 2005 08:20:00 -0500, (Nick
Pine) wrote:

wrote:

homeowner questions go in alt.home.repair.

Sez who?

The ASHRAE Bunny.



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