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The same vessel wants to upgrade their oil-fired auxiliary boiler to run on natural gas. The boiler controls have been updated with a digital lead-lag
The same vessel wants to upgrade their oil-fired auxiliary boiler to run on natural gas. The boiler controls have been updated with a digital lead-lag air-fuel ratio control system with oxygen trim. The oxygen trim system is limited to a maximum change of the air or fuel flow of 10% of the maximum air or fuel flows. The maximum flow rate for the natural gas is 750 scfh and for air is 7500 scfh. The maximum steam pressure is 150 psig and the oxygen analyzer range is 0% to 5%. We need to determine the: 1. Scaling factor for SC1 2. Scaling factor for SC2 3. Scaling factor for SC3 4. Scaling factor for SC4 5. The equation for the summing module AY2 6. The equation for the summing module AY3 We have been provided the followina scan of the drawing: Present your conclusions in the for of a written report to you supervisor detailing the problem, assumptions, equations, variables, and conclusion for the information they have asked for
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