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http://dx.doi.org/10.3795/KSME-B.2017.41.4.249

Combustion Characteristics of Premixed Burner for Domestic Condensing Gas Boiler Using Metal Fiber and Throttle Body  

Lee, Pil Hyong (Division of Mechanical System Engineering, Incheon Nat'l Univ.)
Hwang, Sang Soon (Division of Mechanical System Engineering, Incheon Nat'l Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.41, no.4, 2017 , pp. 249-256 More about this Journal
Abstract
Premixed combustion has many advantages, including low CO and NOx emissions and a small combustor volume. These characteristics allow a compact design and wide application to condensing boilers with high thermal efficiencies. This study focused on the combustion characteristics in a premixed combustion burner using metal fiber and a throttle body. The results showed that a blue flame was found to be very stable at a heating load of 6,250-25,000 kcal/h when implementing the proper metal fiber, baffle plate, and throttle body. The NOx emission was less than 11 ppm under an equivalence ratio of 0.724-0.795, and the CO emission was less than 50 ppm under the same equivalence ratio. The thermal efficiency, which is a very important index when condensing a gas boiler, was observed to be above 96.3％ under an equivalence ratio of 0.750.
Keywords
Premixed Combustion; Metal Fiber; Throttle Body; NOx; CO; Thermal Efficiency;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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