This article studies my empirical measurements to estimate the efficiency of a portable induction hob and of an electric kettle heating water to a temperature under boiling level. A known amount of water was heated for one hundred seconds and its temperature change was measured. The electrical energy consumed was measured using a plug-in power meter. The determine for electrical power is an estimate of the typical, as a result of neither the induction hob nor the kettle consumed exactly fixed energy. The facility studying for the kettle was 2.142 kW close to the start of heating and had fallen to 2.122 kW after about 70 seconds. On the whole it declined slightly as heating proceeded. Power readings for the induction hob were from 2.032 kW to 2.042 kW. Table 2 exhibits values calculated from these measurements, including the general efficiency. The heat energy in the water was calculated utilizing 4.18 kJ/kg as the specific heat of water. The electrical energy was calculated by multiplying the facility studying from the facility meter by the time the facility was applied (100 seconds).
发表于 2025-9-19 02:47:38
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