Determine the overall heat transfer coefficient, U$,$ for a single pass cross flow heat exchanger. Give your answer in units of W$/$m$2$K$.$ Take the fluid properties to be those at $10$oC$.$

Heat exchanger surface area $0\mathrm{.}6$ m$2.$

Cold fluid: mixed water.

Cold fluid flow rate: $2\mathrm{.}5$ l$/$min$.$

Cold inlet temperature: $10$oC$.$

Cold outlet temperature $26\mathrm{.}00$oC$.$

Hot fluid: unmixed water.

Hot fluid flow rate: $2$ l$/$min$.$

Hot inlet temperature: $50$oC$.$

Hot outlet temperature: $30$oC$.$