abstract for water tube boiler Agent temperature


A thermal nonlinear dynamic model for water tube drum boilers

Apr 20 2009 · Abstract. A thermal model for the prediction of possible tube overheating was developed. The model incorporates a nonlinear state space dynamic model that captures the important physical interactions of the main variables of steam generation in naturally circulated water tube drum boilers.

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Research on the Hydrodynamic Characteristics and Metal ...

The water wall flow distribution and temperature profile of the boiler were computed. The results show that the flow difference and heat difference are small in spiral tube water wall at BMCR 75%BMCR load and 30%BMCR load. The metal temperatures are all in the range of allowable range and the operation of boil is safe and reliable.

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Failure investigation on rear water wall tube of boiler ...

Oct 01 2009 · On-site wall thickness measurements are also performed on all the rear water wall tubes located at the same level of the ruptured tube. The tubes had operated at temperatures of 350360 °C. The operational steam pressure is reported at 16.5 MPa. The tubes are observed to have experienced significant erosion.

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Research on the Hydrodynamic Characteristics and Metal ...

Mar 01 2010 · The water wall flow distribution and temperature profile of the boiler were computed. The results show that the flow difference and heat difference are small in spiral tube water wall at BMCR 75%BMCR load and 30%BMCR load. The metal temperatures are all in the range of allowable range and the operation of boil is safe and reliable.

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An experimental and theoretical investigation into the ...

Mar 30 2000 · Experiments were first conducted in a 6 MWth CFB boiler then a model was developed to analyse and interpolate the results. Temperatures at some discrete points within the wall crosssection of the tube were measured by burying 0.8 mm thermocouples within a tube. Experimental data showed an increase in heat absorption up to 45 per cent.

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A thermal nonlinear dynamic model for water tube drum boilers

Apr 20 2009 · Abstract. A thermal model for the prediction of possible tube overheating was developed. The model incorporates a nonlinear state space dynamic model that captures the important physical interactions of the main variables of steam generation in naturally circulated water tube drum boilers.

learn More