Process Integration for Energy Conservation in Double Pipe Heat Exchanger through Pinch Technology

Energy conservation is the prime concern for all process industries in the current scenario of energy crisis. Questions regarding energy efficient processes, appropriate utility mix for the processes, reducing emissions, increasing plant capacities, improving product qualities and attaining the one coherent plan for the overall site can be best answered through pinch technology. Pinch analysis is used to represent the application of pinch technology to design the heat exchanger networks and study industrial processes. This paper presents the process integration carried out in double pipe heat exchanger through pinch technology. For the pinch analysis of double pipe heat exchanger, steps like identification of process streams, thermal data extraction, and selection of ∆Tmin and construction of composite curves are carried out. Composite curve method and problem table method are used for the calculation of double pipe heat exchanger. At the end improvements in double pipe heat exchanger are mentioned. Future perspectives of pinch technology are also given.