Application of heat transfer enhancement for retrofit of heat recovery systems

摘要

Heat Exchanger Networks (HEN) play important roles in a chemical plant. In a plant lifetime, it may be required to retrofit a HEN several times in order to improve the energy efficiency or to accommodate the increase in throughput. The Network Pinch method developed by Asante and Zhu (1996) can identify bottlenecks, which limit the increase in heat recovery for an existing HEN and also indicate promising structure changes to overcome the bottlenecks.