Experimental Analysis of a Gas-Tank Water Heater with Porous Burner

Document Type : Research Article

Authors

1 Department of Mechanical Engineering, University of Kashan, Kashan, Iran.

2 Department of Mechanical Engineering, University of Kashan, Kashan, Iran

Abstract

In this study, the effects of the porous burners and the conventional burner on the performance of gas-tank water heater have been investigated experimentally. In this experiment, a partially premixed burner with natural gas fuel is used. Four different types of the porous medium have been applied. In the Results, water temperature, flue temperature, flame temperature, emissions and combustion efficiency for different burners at various flow rates of fuel have been reported. Observation shows that the use of porous burner with 10 cm porous medium reduces the time that water temperature reaches 60 oC. Also observed that the conventional burner has the lowest flame temperature and the highest flue temperature in all of the tests. Moreover, it is showed that the burners with 10 and 5 cm porous medium have the highest flame temperature and the lowest flue temperature in all of the tests, respectively. The burner with 5 cm porous medium and conventional burner have the highest and lowest amount of carbon dioxide in all of the tests, respectively. Also, the combustion efficiency of gas-tank water heater increases about 15 percent by using the burner with 10 cm porous medium.

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Main Subjects

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Amirkabir Journal of Mechanical Engineering
Volume 52, Issue 6
September 2020
Pages 1613-1626

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