Abstract
A tubular flame burner with 150 kW has been developed and its combustion characteristics for propane have been investigated. The main results obtained are as follows: (1) A tubular flame with a large laminar flame area up to 0.3 m2 can be stabilized. (2) The equivalence ratio Ф at limit is about 0.55, which yields lean combustion. (3) The flame diameter and the flame length take their minimum and maximum values around Ф=1, respectively. (4) The wall temperature is kept around the unburned gas temperature, yielding long operation hours. (5) The burned gas temperature in the combustion tube is uniform in the axial direction. (6) The volumetric burning rate is equal to the total mixture volume flow rate within 30% disagreement, and hence, the burner length can be determined by using this relation.
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