Consider the co-flowing heat exchanger shown in figure (Q2). Two streams of water (each with the same thermodynamic properties) enter and leave the device. Hot water enters the heat exchanger at TA. Cooling water enters the exchanger at TB; both streams have the same mass flow rate m and both exit the exchanger at a common temperature T2. Neither fluid stream undergoes a phase change. During the heat exchanger's operation, a quantity of heat Qsys is rejected (Qsys