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MMl  d2X, Legend? }Z   Title?l$ArialArial "]Z  %&'( 880d   X$ ArialZ\LZ$ ArialZ\LZ  LB  p%&'( 0d   $ ArialZ\LZ$ ArialZ\LZ  B           ^  ddư>   ?&  Mb@?   #       f  g    i2      -./g  0d -Y for vs GA 9 iS\TEMP\QPW132.TMP6 Gas Flow$u<7~ 7Yww,$YGYYo5DŽ̈́   ^&ӆ]$G[!Ra $* _@ Inserted11Gas Flow_Chart 1"\rGGG9/,,,, , , , , 7   <Chimney Draft Calculations For a Wood Burning Device@2 Copyright (c) Nigel Pemberton-Pigott, 2003 NOTES:. 'AIR' means the normal air around you.? 'GAS' means the gases that are considered in the flame.I 'Gases' means all the gases including the 'GAS' and excess 'AIR'.G Assume that no CO is being produced and combustion is complete.P For air paths through a line of holes the centreline is gas/air boundary9 The calculation is not hydrogen-heat compensated.! Formula for burning wood:> aCH1.4O0.6 + 1.05(O2 + 3.76N2) => CO2 + 0.7H2O + 3.95N2 CHIMNEY DRAFT CALCULATORoYAIR FACTOR (actual air flow/ideal air flow). Excess air of 50% means 150% of ideal air flow. Enter 1.50$ADiameter of chimney (inside)ATime to burn fuel)AMass of fuel burned in time aboveATemp inside chimneyA% carbon in the wood!A% water contained in woodHeight of chimney$Heat content of wood/biomassiMass of actual fuel qRate of fuel burn /minqHeat producedqMoles of actual fuelqMass of carbon+qMoles of CO2 created during burning+ qMass of CO2 produced during burning-!qVolume of CO2 produced during burning&"qMass of O2 need to burn carbon*#qMoles of O2 needed to burn carbon *$qVolume of O2 needed to burn carbon5%Volume of air needed to supply the O2 at 273K,&qMass of H2O vapor created in burning.'qMoles of H2O vapor created in burning 2(qVolume of H2O vapor created during burning.)qMoles of N2 entering/exiting the flame-*qMass of N2 entering/exiting the flame-+qVolumes of N2 exiting the flame (273)1,qVolume of CO2 already in the incoming air-qMass of H2O in the wood.qMoles of H2O from wood,/qVolume of H2O vapor from wood itself-0qVolume of GAS exiting the flame (273):1qVolume of gases exiting the flame (273) air factor*2Volume of excess air in air factor93Volume of GAS in chimney (no air from air factor)84Volume of Gases in chimney with extra air factor45Real air volume from outside with air factor7iAir flow per second '8qCross-sectional area of chimney9yVelocity of flue gases ;p <p =9CO2 >9H2O ?9N2&@9Total density of GAS at (STP))AyTotal density of GAS at flue temp Ch*D9Density of excess AIR at flue temp#E9Density of GAS at flue temp,FyAverage density of all gases in flueGDraft of chimney `S?X@ @@@Pt@I@(@ @L3@0@  d )UUUUUU-@  < -qm@   < $,d!C@    YB|@  ,d!C@$ 7M@  $!<-ql?  "" YB@  &#" YBD@ ? $$|? $%LiAN@  &,d!~@  &',d! Y:@ ffffff? $(O2? $)pzӛb@ $*" YBz@  $+2 @ $,IӮV? (-^@d  $.@  $/QFoZ? <0ý'@(     11i@    )2LiAN@   63 Ͻ%@"    J4 I_M/@6     $5zb@  6 75q?  +8t^~?   & $9 q? ;GAS after burning<Density (g/m^3)$=$I$@ 6>J$I@"    $?@ D@ސ_g@0    -A^}@    CGases after burning5DK*?!     Ee?  DF^?0     5G7>{O@!     X P YmmYseconds Ygm YC Y% Y%AMetres aMJ/Kg ggm/min Watts moles g moles  g !m^3 "g #moles $m^3 %m^3 &g 'moles (m^3 )moles *g +m^3 ,m^3 -g .moles /m^3 0m^3 1m^3 2m^3 3m^3 4m^3 5!m^37m^3/sec 8m^2 9!m/sec ;<Proportion after flame-=f ?  ->|̱??  $??ܹ? ,@?   A!g/m^3 CxDkg/m^3Ekg/m^3F!kg/m^3GPascalsB~.(WARNING! Gas speed too high! ;*3 h/9 Velocity should not be more than 3m/sec   ( )AIR 1O2 1N2  1CO2 9Ratio of CO2 to O2 9Ratio of AIR to O2 9Ratio of AIR to CO2 ARatio of N2 to O2 qDraft lineArrow NumberPos/Neg DraftAir / GasInitial Temp (C)Final Temp (C)Average T (C)Density (g/m^3)Height (Metres)Draft (pascals)Path Area (m^2)Volume M^3/hrVolume M^3/sec Max  Total Fuel Type Gm/minute burned$Flow Rates %Piece&ICan Body'ISec Air Tube Large(ISec Air Tube Small)ISmall Grate Holes*IAir Controller+ISec Air Tube,QGrate Bottom/. Note: The Vesto is protected by Patent.Y/ Note: New Dawn Engineering and the Arrow Device (logo) are registered trade marks H  %4@S@ Mb?$ ,4Y?   ;;@ d   j@ d $ U@ VESTO STOVE MODELLINGPrimary Pre-heat{@ air9@i@)u \@   1Č@     ?Am8-       4;{? 6XS"@  9 Ns`d?%       $ 7 ? ";h@P$)Vesto Pic%1Arrow #&s?'s@(s@)qMultiple*s@+s@,@ H              P Sec Air Pre-heating{@? airi@ |@)uPt@   1MozӋ@     333333?Am Ud?-       46t ? 6XS"@   Ns`d?$ zC}? Pascals  Wood (@$)Hole Dia (mm) %9(mm)&C@'>@($@) @*C@+d@,3@_@YCONSTANTS  Molar volumeM of AIR Temp (STP) Air at STP   Gravity  P Primary Combustion{@? gasi@P@)uz@   -Br]@    @333333?Amg?-       -DT!? 6XS"@   Ns`d?$ ,K?  H $(%1Area (m2)1& # ҔR?  & .A 1' b㽎)G?  & .A 1( [<ŷ?  & .A 1) ~tӄZ ?  & .A 1* # ҔR?  & .A 9+ 46t ?%  & .A  1,-DT!?  & .A  H Idea Gas PropertiesǺ?={,}<@)  0 d  q@ ?   Q#@  P Sec Combustion{ @? gasP@X@)uԇ@   -=u@    @(\?Am *O?-       -DT!? l;@  O a~?;       $ ;R?  H $(%1# Holes&@' @(.@)S@*@+?,#?  H     m^3/mol g/mol K kg/m^3   m/sec^2  P   !Heat to Pot "@ +? )gas X@ g@) ]@   - =Ӡ{@    @ RQ?A .͑?-       t^~? l;@ a~?$ 1y?   p  $( %1Total area (m2)$ & 4;{? $ ' b㽎)w? $ ( RHLMS? $ ) F(p? $ * 4;{? $ + 46t ? $ ,-DT!?   H   Compound CO2 H2O N2 O2 H2 CO aCH1.4O0.6  Max $)Required Air %1Flow(m3) &zb@5 'zb@5 (zb@5 )zb@5 *zb@5 +zb@5 ,Mzb@5  H   Specific Gravity RQ? V-? On? V-? Dl? l? i???0  Arrow numbers refer to a single gas path  $( %1mm/sec8 &E|p@$  @ K 'rR }p@7     @  (yAdded Above8 )8|@$  @ 8 *E|p@$  @ 8 +D+l@$  @ 8 ,MLN\b@$  @   p   Atomic Weight (g/mol) F@ 2@ <@ @@ @ <@ k7@  $H  %`  &X  'X  (X  )X  *X  +X  ,`  x                    3  4  5  6  7'SINGLE POINT DRAFT CALCULATIONS h p p p  p  p  p  p  p p p p p p p p p p p p p x ` Temp at pointHeight difference  Air Density at point! Flue Gas Density at point  * Draft at point for AIR vs AIR(STP)* Draft at point for GAS vs AIR(STP)  Draft X-Y for AIR vs AIR Draft X-Y for GAS vs GAS +Draft, Gas(X) outside AIR(Y) inside+Draft, AIR(X) outside GAS(Y) inside+Draft, GAS(Y) outside AIR(X) inside+Draft, AIR(Y) outside GAS(X) inside      `POINT X @? 5 Q]?!    9 Ks?%     6  5 cuO?!    5 [M'D?!     56?!    5K?!     5%!    5*.h|!    5*.h|?!    5%%?!      X is higher than YX inside, Y outsideX top, Y bottom `Point Yr@ 5 W?!    9 Nt` ?%     6                    X x degC m  kg/m^3 kg/m^3   Pascals Pascals PascalsPascals PascalsPascalsPascalsPascals   or/and  dd Group14Group1`PC:\NDE M4QPW$ExtendedStorage$6.0