Question

As the minimum approach temperature increases a) The capital cost decreases but the operating cost increases b) Both the capital and operating costs increase c) Both the capital and operating costs decrease d) None of the above The main parameter used in the pinch technology is a) Minimum temperature approach b) Heat exchanger network c) Temperature interval diagram d) Cascade diagram

Answer 1

Answer: (a)

The approach temperature is the temperature difference between the leaving streams in a heat exchanger. As the minimum approach temperature increases, the capital cost decreases but the operating cost increases.

Answer: (a)

Pinch technology is the method of optimization and automation of heat transfers. The main parameter used in the pinch technology is $\Delta T_{min}$ (minimum temperature approach).