A fluid with Cp = 4 kJ/kg K enters at point 1 at 3 kg/s and 10°C. It exits at point 3 at 15°C. Another fluid with Cp = 2 kJ/kg K enters at point 4 at 90°C and leaves at point 2 at 30°C. What is the total Q for the system?

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A fluid with Cp = 4 kJ/kg K enters at point 1 at 3 kg/s and 10°C. It exits at point 3 at 15°C. Another fluid with Cp = 2 kJ/kg K enters at point 4 at 90°C and leaves at point 2 at 30°C. What is the total Q for the system?<img hspace='0' height='300' width='500' vspace='0' border='0' title='s&t' alt='s&t' src=''/>