Thermal Efficiency Test of a Home Gas Cookstove in Actual Condition

ome tests were made in order to find out the relation between the flow rate of natural gas and the thermal efficiency of home gas cookstove.The influences of the water temperature and the size of pan to the thermal efficiency have also been tested.The results show that the average thermal efficiencies of the gas cookstove in boiling water vary from 43% to 52%.The flow rate of natural gas has a more significant effect on the thermal efficiency in a smaller pan than in a larger pan.The lower the flow rate of natural gas is,the higher the thermal efficiency of the small pan is.The ratio of the maximum thermal efficiency to the minimum thermal efficiency is 1.6 for the small pan.The relationship curve between flow rate of natural gas and the thermal efficiency of big pan is saddle shape with the maximum of thermal efficiency at a flow rate of natural gas of 0.1m~3/h.The primary energy consumption of boiling water with a gas cookstove in big fire condition is more than with a electricity water boiler.