Required information

Hot oil $(c_p=2200\frac{J}{k}g.K)$ is to be cooled by water $(c_p=4180\frac{J}{k}g.K)$ in a $2-$shell$-$passes and $12-$tube$-$passes heat exchanger. The tubes are thin$-$walled and are made of copper with a diameter of $1\mathrm{.}8$ cm $.$ The length of each tube pass in the heat exchanger is $3$ m $,$ and the overall heat transfer coefficient is $340\frac{W}{m^2}.$ K$.$ Water flows through the tubes at a total rate of $0\mathrm{.}1k\frac{g}{s},$ and the oil through the shell at a rate of $0\mathrm{.}2k\frac{g}{s}.$ The water and the oil enter at temperatures $18C$ and $138C,$ respectively. Assume effectiveness to be $0\mathrm{.}61.$

Determine the rate of heat transfer in the heat exchanger. $($Round the answer to a single decimal place$)$

The rate of heat transfer in the heat exchanger is kW$.$