An insulated counter-flow heat exchanger is used to cool water coming from a manufacturing process. The water enters at 55°C and exits at 27°C, with a mass flow rate of 0.70 kg/s. The water is cooled...

An insulated counter-flow heat exchanger is used to cool water coming from a manufacturing process. The water enters at 55°C and exits at 27°C, with a mass flow rate of 0.70 kg/s. The water is cooled by air, which enters at 24°C and flows with a rate of 4.1 kg/s. The pressure change of the air is negligible. Determine the exit temperature of the air and the entropy generation rate of the heat exchanger.