COMBUSTION GAS GENERATING METHOD, COMBUSTION GAS GENERATING DEVICE AND GAS SENSOR TEST DEVICE USING THE SAME

摘要

PROBLEM TO BE SOLVED: To control combustion gas temperature without changing the composition of the combustion gas by generating a first combustion gas at a given air fuel ratio, generating a second combustion gas which has been combusted at a ratio substantially equal to the above-mentioned ratio and permitting the second combustion gas to be in contact with the first combustion gas that has been cooled. SOLUTION: Supplied fuel is combusted at a given air fuel ratio in a low temperature side combustion burner 3 and the resultant combustion gas enters into a steam heat exchanger 5 by way of a low temperature side combustion cylinder 4. The combustion gas flowing into the heat exchanger 5 is cooled down to a given temperature making use of latent heat of water in the heat exchanger 5. Thus cooled combustion gas enters a combustion gas mixing cylinder 8 wherein a combustion gas generated by means of a high temperature side combustion burner 7 through combustion of the same air fuel ratio as that of the burner 3 gas the combustion is conducted at the same air fuel ratio as that of the burner 3, the temperature of the combustion gas is the same as the combustion gas temperature before cooling at the side of the burner 3) and the cooled combustion gas are mixed and controlled to have a given combustion gas temperature.