Publications

This paper was prepared for presentation for the CE Expo Conference in Houston, Texas in June, 1999. Today's low energy costs result in many projects for energy reduction being insufficiently attractive to justify their installation. The payback times for such projects may be unattractive due to the need for piping modifications to install new exchanger area. This paper presents a simplified analysis of a project to install high performance tube bundles into existing shells with no piping modifications. It uses a crude unit heat train as an example. It further introduces a new Pinch concept which is used to identify the optimum choice of exchanger bundles to be replaced.