Hot water at $95^{\circ} \mathrm{C}$ is sent through a countercurrent tube-in-tube heat exchanger with cold water entering at $25^{\circ} \mathrm{C}$. Hot/cold water specific heat capacity is $4.2 \mathrm{~kJ} \mathrm{~kg}^{-1} \mathrm{~K}^{-1}$. Flow rates of hot and cold water are 2.7 and $4.1 \mathrm{~kg} \mathrm{~min}^{-1}$, respectively. Overall heat transfer coefficient is $55 \mathrm{~W} \mathrm{~m}^{-2} \mathrm{~K}^{-1}$ and the area of heat transfer is $5 \mathrm{~m}^{2}$. Cold water outlet temperature from the heat exchanger in ${ }^{\circ} \mathrm{C}$ will be________________

Hot water at $95^{\circ} \mathrm{C}$ is sent through a countercurrent tube-in-tube heat exchanger with cold water entering at $25^{\circ} \mathrm{C}$. Hot/cold water specific heat capacity is $4.2 \mathrm{~kJ} \mathrm{~kg}^{-1} \mathrm{~K}^{-1}$. Flow rates of hot and cold water are 2.7 and $4.1 \mathrm{~kg} \mathrm{~min}^{-1}$, respectively. Overall heat transfer coefficient is $55 \mathrm{~W} \mathrm{~m}^{-2} \mathrm{~K}^{-1}$ and the area of heat transfer is $5 \mathrm{~m}^{2}$. Cold water outlet temperature from the heat exchanger in ${ }^{\circ} \mathrm{C}$ will be________________

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