Sealed Combustion System With Diagnostic Self-Tuning.

Krishna, C. R.

Brookhaven National Laboratory

关键词: Heating Systems;    Oil Burners;    Pressure Measurement;    Atomization;    Oil Furnaces;   

DOI  :  10.2172/15010017
RP-ID  :  BNL--73311-2004-IR
RP-ID  :  AC02-98CH10886
RP-ID  :  15010017

美国|英语

来源: UNT Digital Library

【 摘 要 】

This task grew out of a proposal to develop a ''concept'' oil-fired heating system that would incorporate advanced technologies available and suitable for a residential system. Discussions among the program and project personnel resulted in the identification of a sealed combustion system as of programmatic interest and the objective was to develop an approach to a sealed system with diagnostic self-tuning. The major conclusion with regard to the specific objective for this task is that a measurement of the static pressure in the input pipe can be used to provide a measure of the excess air for a limit control. Its implementation would require a suitable pressure sensor, and a circuit to combine its output signal, at the appropriate time in the operating cycle, to the burner control. The sensor and control combination will also have to be tested successfully under all conceivable contingencies that can cause the airflow to decrease. It could also be implemented, possibly even more reliably, if a mass flow sensor, such as is used in automobile engines and hence may be cheap, could be used. The pressure measurements reported here, both steady and transient, represent only the subset of a much larger set that gave a useful answer to meet the objective. These measurements suggest that they can provide useful insights into both the combustion and gas flow performance of the system. Of course, this could be extended to other types of heating systems, such as those with natural draft, those with different burners, burners with different atomization schemes (air atomization etc.), blue flame burners etc.