In a nutritional products plant, a plate heat exchanger cools infant formula by approximately 25 °C from an inlet temperature of 68 °C as it flows through the plates shown in Fig. P7.71. The process...

In a nutritional products plant, a plate heat exchanger cools

infant formula by approximately 25 °C from an inlet temperature

of 68 °C as it flows through the plates shown in Fig. P7.71. The

process engineer would like to be able to cool the infant formula

by as much as 35 °C as it passes through the plates. The plate heat

exchanger is currently in use, so he would like to build a 1/2-scale

model for testing purposes. In the model, water will be used instead

of infant formula. What flow rate is needed in the model?