How to solve

It has been decided that an old simple heat exchanger needs to be replaced. No records can be found and the only information that can be read off of the exchanger nameplate is that there is one$-$pass on both the shell and tube side, and that there are $10$ steel ${1\mathrm{.}25}^{\text{'}\text{'}}$ BWG $16$ tubes that are $12$ ft long. The exchanger is currently operating with a product stream on the shell$-$side and cooling water on the tube$-$side. The configuration is countercurrent. No data is available for the product stream. You can neglect tube$-$wall resistance and fouling but you must take into account the tube dimensions $($since they are known$).$

$\backslash$table$[[,$Product Stream,Cooling Water Stream$],[(\frac{\text{\#}}{f}t3),$Unknown,$62\mathrm{.}4],[$Cp $($btu$/$#$-$F$),$Unknown,$1\mathrm{.}0],[$k $($btu$/$ft$-$hr$-$F$),$Unknown,$0\mathrm{.}335],[(cP),$Unknown,$0\mathrm{.}9],[$Inlet temp F$,175,60],[$Outlet temp F$,120,85],[$flowrate $(gpm),$Unknown,$93]]$

What is the exchanger heat transfer area, Ao$,$ ft $2?$

Enter an interer or decimal number $[$more$..]$

What is the exchanger Imtd? $$

What is the heat exchanger duty, Q$,$ btu$/$hr$?$

What is the tube$-$side reynolds number, Nre? $$

What is Uo$,$ btu$/$hr$-$F$-$ft$2?$

What is the tube$-$side coefficient, hi$,$ btu$/$hr$-$F$-$ft$2?$