A simple way to estimate equipment pressure drops

摘要

Sometimes we need to estimate the pressute drop of equipment at different operating conditions.This can happen in feasibility,revamp and hazardous stuthes or a relief contingency analysis.An accurate pressure drop is not required for these situations.The equivalent line length method is simple and quick for these purposes.The basic idea of the equivalent line length method is to use an equivalent line length of selected line sree to represent the equipment's pressure drop under a set of operating conditions.Then,use this equivalent line length to estimate the equipment pressure drop at other operating conditions.