Urgent solution required don't use method previous used

A geothermal source is utilized to heat the swimming pool water through a heat recovery

system. Geothermal water at $95C$ is used to heat the swimming pool water at $10C$ at a rate

of $2\mathrm{.}1k\frac{g}{s}$ in a double pipe counterflow heat exchanger. The specific heat for the geothermal

water and the pool water is $4250\frac{J}{k}g.K$ and $4180\frac{J}{k}g.K,$ respectively. The overall heat

transfer co$-$efficient is $480\frac{W}{m^2}*K.$ The mass flow rate and the outlet temperature of the

geothermal water are $2\mathrm{.}5k\frac{g}{s}$ and $51C,$ respectively. Assuming that the heat exchanger will

recover $82\%$ of the available heat in the geothermal hot water. Determine:

i$.$ the rate of heat transfer in the heat exchanger $($unit: kW $)$

ii$.$ the outlet temperature of the pool water $($unit: K$)$

iii. the area of the heat exchanger $($unit: $m^2)$

Inaa....

iv$.$ the efficiency of the resistance heater is $95\%$ and the grid electricity cost is $0\mathrm{.}08$

$\frac{\text{\$}}{k}Wh.$ If the pool operates $8$ h a day, $5$ days a week and $52$ weeks a year, calculate

the amount of money the heat recovery system will save per year from the electricity

savings $($unit: $$).$