In a double$-$pipe heat exchanger, the inner and outer diameters of the pipes are $25$ and $32$ mm$,$ respectively. Inside and outside pipes

The mass flow rates of the flowing fluids are $11$ tons$/$hour and $2$ kg$/$second$,$ respectively, and their specific heat is $4\mathrm{.}18$ kJ$/$kg$.\backslash$deg C$.$

is known. The inlet temperature of the fluid passing through the pipe is $90\backslash$deg C and the outlet temperature is $70\backslash$deg C$.$ flowing outside the pipe

The inlet temperature of the fluid is known as $10\backslash$deg C$.$ Ignoring the losses from the heat exchanger;

a$)$ The amount of heat transferred

b$)$ Calculate the exit temperature of the fluid passing outside

c$)$ According to which flow principle $($eidirectional$-$opposite$)$ is it more advantageous for this exchanger to operate? From where? Digital

Explain with results.