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May 2023
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Fired heater design software1/30/2023 To avoid any upsets in heating medium (Hot Oil system) due to the loss of WHRU, the start-up of fired heater and to reach its full capacity is critical. When an operational WHRU is tripped, the fired heater shall start and ramp-up to compensate for loss in heat duty. therefore, fired heaters are used in combination with WHRUs to provide/ meet heating requirements during transient operation and/ or supplemental heating when required. As WHRUs cannot provide energy requirements during critical operational transients for example - startup of plant or process units, turbine trips, WHRU trip or maintenance, etc. In a typical LNG plant, WHRUs are installed at Gas Turbines exhaust to recover the residual heat from flue gases. Modern petro-chemical industries/ plants utilize Waste Heat Recovery Units (WHRUs) to achieve energy demands and also increase the overall plant energy efficiency. Paper from the AFRC 2017 conference titled Fired Heater Optimization using Dynamic Simulation for Transient Plant Operations Fired Heater Optimization using Dynamic Simulation for Transient Plant Operations
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