An experimental study on carbon monoxide emission reduction at a fire tube water heater

Ozer Aydin*, Y. Erhan Boke

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

In this study, effects of the addition of solid surface on carbon monoxide (CO) emission reduction were investigated in a combustion chamber of a three pass fire tube water heater. The solid surface called as the filling material (FM) was placed coaxially in the center of the combustion chamber. The experiments were carried out on a 116 kW fire tube water heater as described in the European Standard EN 676. A natural gas burner was equipped to this heater. The geometry of the FM and excess air ratio (EAR) were the parameters for the experimental study. The CO and hydrogen (H2) concentrations along with the flame temperature were measured in the combustion chamber. It was found that the FM decreased the CO and H2 concentrations considerably. But the flame temperature increased with increasing diameter and length of the FM. For the stochiometric air-fuel ratio, CO emission decreased dramatically compared to the no-FM-case. In the case of without FM, the flame diffused radially in the combustion chamber and the CO concentration increased for the stochiometric air-fuel ratio. It is apparent that the FM diameter is more effective to reduce the emission of the incomplete products.

Original languageEnglish
Pages (from-to)2658-2662
Number of pages5
JournalApplied Thermal Engineering
Volume30
Issue number17-18
DOIs
Publication statusPublished - Dec 2010

Keywords

  • CO
  • Fire tube water heater
  • Natural gas combustion

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