Microwave electrical consumption

The electrical consumption can be recorded using a Watt-hour meter. The energy consumption of microwave-assisted drying can be evaluated (Varith et al., 2007 Soysal et al., 2006) by two different efficiency indices, namely specific energy consumption (SEC) ... 

The reduced cost of extraction is clearly advantageous for the proposed SFME method in terms of time and energy. Hydrodistillation required an extraction time of 90 min for heating of 6 L water and 500 g aromatic plants to the extraction temperature, followed by evaporation of the water and essential oil for 180 min. The SFME method required irradiation for 3 min only and evaporation for 27 min of the in-situ water and essential oil of the same material. The energy required to perform the extractions is 4.5 kW h for HD, and 0.25 kW h for SFME. The power consumption was determined with a Wattmeter at the microwave generator supply and the electrical heater power supply. 

---