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E Ca lculation No.<br />
145579-V-CA-004<br />
Rev. No.1<br />
Ca lculation Title<br />
Off-Gas Ch iller Calculation<br />
Specific Heat of Dry Air.<br />
Specific Heat of Vapour.<br />
Humidi ty Ratio:<br />
(H20 Mass Flow to Air Mass Flow<br />
Ratio from Attatchment 2 Stream 29)<br />
Dry Bulb Temperature Difference:<br />
(Between Stream 19 and Stream 29,<br />
Attachment 2)<br />
Sensible Heat<br />
(Equation 22, Ch 29, Ref. 1)<br />
• - Latent Heat:<br />
(Equa ti<br />
on 24, Ch 29, Ref 1)<br />
Change in Humidy Ratio:<br />
(Diffe rence of H2O Mass Flow in<br />
s tream 29 to stream 19 over Air<br />
Mass Flow, A ttatchment 2)<br />
RPP-24544 REV I<br />
CALCULATION SHEET<br />
qst `47.07kW<br />
qlt:= S•Aq•QS AW<br />
Orlginator:L t+^<br />
Date: I4olc^,, a^<br />
Checker:<br />
Date: p I yo-. pS<br />
CA := 1.006 CA = 024 M<br />
kg•K1b•R<br />
CV := 1.84-1l - CV - 0.44 8721<br />
kg•K Ib•R<br />
W:= 53<br />
2891<br />
W=0.018<br />
AT:=(304 - 85)R AT-219R<br />
qst := S• ( CA + CV-W)-QS-AT<br />
AW 53_7<br />
:m<br />
2897<br />
Approximate heat content of 50%RN Aq := 2500 kJ<br />
less heat content of the water at kg<br />
condensate temperature<br />
(Standard Condi tions)<br />
Latent Heat qlt:= S•Aq•Qs•AW<br />
(Equation 24, Ch 29, Ref 1)<br />
qst = 1338Tonn<br />
AW = 0.016<br />
Aq =1074.81 BTU<br />
lb<br />
qlt =14.77kW qlt= 42Tonn<br />
-Total Cooling: Tri-mer Operating qtot tri :- qst+qlt gtott ri -61.84kW<br />
1.2 FULL PROCESS (Attachment 3)<br />
- Sensible Heat<br />
• (Equa ti<br />
on 22, Ch 29, Ref. 1)<br />
Standard Flow:<br />
(Mass Based SCFM, Full Flow,<br />
qsf:- S•(CA + CV W) . QS AT<br />
gtottri = 17.58Tonn<br />
ft3 3<br />
Qs:=2874 —Qs-1356 m —<br />
min sec<br />
A5-641<br />
Page 2 of 6
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