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CASO 1-5<br />

Com6nteae st3(4re c6io redticir <strong>la</strong> temperetura de &ire<br />

extrat ificado de 90"F a 75"F d,r.'nt e in estdci6n do<br />

ca le facc j6n.<br />

ANAL.ISIS<br />

0 - 0.10<br />

Area ­ 20 000 pies cuadrados<br />

Siqp6nqase unt temperit ure<br />

exterior do 15*F<br />

y unet anl ida de 20 000 CFM<br />

Una f6rmu<strong>la</strong> prActica para re<strong>la</strong>cionar <strong>la</strong> phrdida<br />

cal6ric del aire do salida es:<br />

Q m 1.08 Btu min./h, pie 3 ,6 F x T<br />

Antes del camblo<br />

0 conducc16n a U A T - 0.10 x 20 000 x 75<br />

0 150 000 Btt|/h<br />

OCFM - 1.00 x 20 000 x 75<br />

- 1 620 000 fltu/h<br />

OT a 1 770 000 11tu/h<br />

Deapu6a dryl cambio on In tomporatura do estra­<br />

tificaci6n<br />

Q' -0.10 x 20 000 x 60 - 120 000 Btu/h<br />

QCFM = 1.09 x 20 000 x 60<br />

O T<br />

. 1 21)6 000 P.tu/h<br />

" 1 416 000 Btu/h<br />

% do ahorro - tvataci6n do cnlefacci6n<br />

S(100 - I 416 O00)x 100- 201<br />

1 770 000<br />

- 72 ­

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