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Show 6. CONCLUSION The basic principles and guidelines have been presented in an attempt to more fully note the importance of a reliable and controllable NOx reduction system. NOx reduction technologies alone will not meet the requirement set forth and proper controls play, more than ever, a large role in the successfu.l implementation of a NOx reduction system. Lastly, the most important concern of any control system is to keep it simple. If a control system is too complex the operator won't understand it. If he doesn't understand it, he won't like it; and finally, if he doesn't like it, he won't use it. 7. REFERENCES [1 J "Control of Nitrogen Oxide Emissions in Gas Fired Heaters - The Retrofit Experience", G. P. Croce, R. Patel, R. Sahu. Presented at the joint AFRC/JFRC Conference, Honolulu, Hawaii, October 1991 . 13 |