Design abd Modeling of a Steam Bypass System in a Central Utility Plant Open Access
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Currently, the small-scale Central Utility Plant (CUP) at The George Washington University is limited by its inability to handle excess steam. This report explores two potential solutions to the issues limiting the utilization of the steam turbine and the efficiency of the power plant. A preliminary analysis of a battery storage system is considered based on available literature and data. Then, a model of the CUP was designed in Simulink using the Thermolib library to simulate the components of the power plant. Each component was verified with manual calculations before using metered data gathered from the plant's automatic control systems to identify component efficiencies and improve accuracy. After adding a steam bypass system, the simulated model proved the utilization rate of the steam turbine would increase. This leads to an increase in the plant's overall efficiency because steam would no longer limit the power output of the gas turbine. While there are further studies to be done towards improving accuracy of the model and determine the specifications of a bypass solution, a dump condenser has been shown to be a feasible solution to manage excess steam, improve efficiency and lead to financial savings.
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