CO emission of domestic gas cooker on Dutton diagram

Abstract

The gas distribution system tends to be connected with multiple gas sources to meet the increasing demand for natural gas. However, different sources may cause a fluctuation of the constituents and lead to an increase of CO emission on domestic gas cookers. The purpose of this paper is to study CO emission characteristics of domestic gas cookers under variable three-component mixtures based on Dutton approach. In this paper, two typical gas cookers with round-port burner and strip-port burner were tested under different three-component mixtures. With reference to Dutton’s approach, CO emissions for three-component mixtures were experimentally measured. A universal formula is derived from fitting the experiment data to predict the CO emission of the cooker. The influence of initial primary air coefficient to this formula is discussed. A series of CO iso-lines are revealed on the Dutton diagram. A method to determine the limit gas was discussed based on CO iso-lines on the Dutton diagram.