counterflow heat exchanger having a U A value of 2 kW/K receives stream
1 at a temperature of 60°C and stream 2 at a temperature of 20°C. The flow
rates are 0.3 and 0.4 kg/s, and the c p in kJ/(kg . K) are 3.2 and 4.19 for
streams 1 and 2, respectively. What is the outlet temperature of stream