A two$-$evaporator compression refrigeration system as shown in the figure uses refrigerant$-134$a as the working fluid. The system operates evaporator $1$ at $20\mathrm{.}0$F$,$ evaporator $2$ at $29\mathrm{.}5$F$,$ and the condenser at $120\mathrm{.}00$ psia. The cooling load of evaporator $1$ is double that of evaporator $2.$ Determine the cooling load of both evaporators per unit of flow through the compressor, as well as the COP of this system. The refrigerant is a saturated liquid at the exit of the condenser and a saturated vapor at the exit of each evaporator, and the compressor is isentropic$.($Round the final answers to three decimal places.$)$

$($Take the required values from saturated refrigerant$-134$a tables.$)$

In the two$-$evaporator compression refrigeration system, the refrigerant enters a compressor into a condenser, m $1$ plus m $2.$ From the condenser, the product passes through an evaporator $1,$ m $1$ into a pressure$-$reducing valve. The valve leads the product into an evaporator $2$ and further into a compressor.

please answer: The cooling load of both evaporators per unit mass through the compressor is $?$Btu$/$lbm$,$ and the COP of this system is $?.$