Quantifying Energy Losses on Electric Cooking Stove

Abstract

An electric stove is an integrated electrical heating device to cook and bake. Electric stoves became popular as replacements for solid-fuel stoves which have required more time to cook. However, none deals with quantitative determination of the total minimum heat required or total amount of heat used in specific cooking processes. This paper is aimed to quantify the utilized and lost energy during cooking and give the direction to improve the design or methods to how to minimize the losses to save the energy and cooking time by measuring input energy, utilized energy and energy losses in electric stove. In this test, averagely 0.859kW of electric power is consumed in 18 minutes to boil the water. The average, from the total input electric energy, only 0.422kW is utilized but more than half of input energy (0.48kW) is lost. Thus, the average efficiency of electric stove is 49.1%, which calculated from measured input and utilized energies. Therefore, it is concluded that, this type of stove needs design, manufacturing and material selection improvement to enhance the efficiency.