8/13/2019 HW Set 6 Revised

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ChE 354 Fall 2013 HW Set #6 (Revised) Due 11/1/13

1) ! dilute "etha$l st%ea" at 3&' /s is heated *%$" 3 t$ 54 deC i a shell + tu,e

e-.hae%& the shell side $e ass is used ith h$t .$desate (ate%) as the heati

*luid& 1& /s ete%s the shell at 3 deC& $ 110 W/"2deC& he ave%ae vel$.it7

i the tu,es "ust ,e "aitaied at 0&3' "/s i 1&05 ." 8D tu,es& 9e.ause $* sa.eli"itati$s: the tu,e leth "ust ,e $ l$e% tha 2&4 "& Cal.ulate the u",e% $* tu,e

asses: u",e% $* tu,es: ad leth $* the tu,es&

2) ! h$%i;$tal tu,e va$%i;e% ,$ils

8/13/2019 HW Set 6 Revised

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$u suse.t that all the liht $il .a$t $ th%$uh the 2 i.h ie ad sta7 ithi 10 si&

$u d$ $t at t$ ,7ass a%t $* the *l$ ad l$se e**i.ie.7 ad 7$u $ that st%ea"s

.a ,e easil7 slit *$% a%allel *l$ th%$uh .$.et%i. ie e-.hae%s& F$% e-a"le the

s"alle% st%ea" .a $ th%$uh all the ie se.ti$s i se%ies: hile the la%e% st%ea" .a

,e slit i hal* ith ea.h hal* $i th%$uh sea%ate ie se.ti$s i a%allel (!ll d$e t$

"aitai .$ute%.u%%et *l$ as d$e ith e-a"le %$,le"s)& si the "eth$ds sh$ i

KSH E-a"le 12&2 7$u .al.ulate the desi (ith *$uli all$a.e) h *$% the lu,e $il t$ ,e

60 9tu/*t2h%deF at the h$t ed $* the heat e-.hae ad 40 at the .$ld ed& his is

ith the eti%e *l$ th%$uh the aulus& F$% the liht $il st%ea" 7$u .al.ulate h (ith

*$uli *a.t$%) t$ ,e 340 at the h$t ed ad 300 at the .$ld ed& his is *$% the eti%e

*l$ th%$uh the 2 i.h ie& What d$ 7$u %e.$""ed d$i ad hat is the %e@ui%ed si;e

$* the heat e-.hae%G Sh$ .al.ulati$s t$ su$%t 7$u% %e.$""edati$&