| Energy is the foundation of industrialization,almost all industrial production have to use the energy,the main way using energy is burn,and conventional combustion produce lots of pollution.Researching for a new combustion technology to use the energy source efficiently and cleanly has become the emphasis.Pulse combustion technology is a new combustion technology,compared with conventional combustion which base on steady-state combustion,it is higher efficiency and lower pollution.Currently the theory and application of pulse combustion is not perfect,especially in high-power pulsating burner.Scanning experiments of small Rijke-type pulse combustor are characterized,stable operation of the pulse combustor have been got,a definition which fits Rijke-type pulse combustor structural features is proposed:combustion intensity.The combustion intensity used as a criterion for pulsating burner's amplification,different structures of the combustion bed are designed to improve uniformity of flame,realized water boiler and its stable operation under 100 kW,heat transfer efficiency and emissions are measured.From the experiments follow results have been got:1.Scanning experiments of small laboratory scale Rijke combustion is characterized,the power range under stable operation is 0.1 OkW?0.3 5kW,through the analysis of the flame image and acoustic combustion state is recognized.2.This paper take the combustion intensity as the amplification criterion,based on small scale Rijke tube combustion intensity and general boiler designing,enlarge the Rijke combustion's power to 100kW?130kW with a fit combustion bed.3.Design a 100kW pulsating combustion water boilers,its thermal efficiency and exhaust emission are characterized,The results show that under the same experimental conditions the pulsating combustion's thermal efficiency is 30%higher than the steady-state thermal efficiency,and CO and NO_x's emissions are respectively reduced 62% and 71% than the steady-state's. |
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