要約

In the experimental study, a specially designed finned burner is used to enhance the heat transfer rate from the burner surface to the bottom surface of the cooking vessel. The structure of the fin is a rectangular obtuse-angle pattern (∠l30°), which is fitted to the vaporizer (U-tube for thermal cracking of liquid fuel) of the fuel burner. The same heats up the upward air adjacent to the cooking vessel; simultaneously lowers dissipation of heat from the hot burner surface to the surrounding at the time of operation. The performance test was carried out in terms of thermal efficiency and fuel consumption rate by varying the number of fins and the spacing between them.
The optimum results are noted for the finned burner with 20 fins at a spacing of 0.5 cm. An average thermal efficiency found for the same is 62%; that is 8% higher than that of the burner without fins. The overall observed kerosene consumption rate of 0.244 kg/h gives a net fuel saving of about 0.090 kg/h, the fuel consumption rate ascertained for the conventional stove burner is 0.330 kg/h. Therefore, fuel economy can be achieved by incorporating a fin-structure to the burner of the conventional stove.