Investigation The Effect of Various Temperature-Measuring Configurations on The Thermal Efficiency of Liquid Petroleum Gas Stoves

: The paper presents the effect of different temperature measurement configurations of volumed water inside the vessel for the thermal efficiency estimation of liquified petroleum gas stoves (LPG Gas Stoves). For this purpose, initial and final water temperature were measured at nine different configurations, and then the thermal efficiency value at each configuration was determined. The reference test method for energy performance of LPG Gas Stove constituted in Indonesia National Standard SNI 7368:2011 was employed to determine the thermal efficiency of the LPG Gas Stove. A coverage interval method was applied to estimate uncertainties and to reliably compare the thermal efficiency measurement. It is found that the thermal efficiency values of temperature position variations are statically similar to the reference point. The interval level of estimated thermal efficiency values ranges from 2.49% to 2.65%. Furthermore, the temperature measurement is found to be the dominant contributor to coverage interval value of thermal efficiency estimation. Therefore, the temperature measurement of the water volume inside the vessel must be specified in the test method in the standard.