Heat Exchange Between Oil and Water. Water is flowing at the rate of $2\mathrm{.}13k\frac{g}{s}$ in a $1-2$ shell$-$and$-$tube heat exchanger and is heated from $45C$ to $85C$ by an oil having a heat capacity of $1\mathrm{.}95k\frac{J}{kg*K}.$ The oil enters at $120C$ and leaves at $85C.$ Calculate the area of the heat exchanger if the overall heat$-$transfer coefficient is $300\frac{W}{m^2*K}.$