Can someone tell me how much amount of power is required to convert 100 liters of water into steam using electric boiler and how can i convert electrical power used by electric boiler into Q from electricity.
Well, it will depend on your starting water temperature and local height (sea level?). Then you will need to know more about the boiler in question like kind of boiler and it's conversion efficiency....
Once you know that, than you need to remember that the enthalpy of vaporisation of water is 40,650 Joules/mol at 100 C. A mole of water weighs 18 grams so this translates to 2,258,333 Joules per kg. Than, put this information together and voilà your answer...
You need 419 kJ/kg to bring water from 0 to 100° Celsius and 2235kJ/kg to transform it completely in steam. But it is only a theoretical treat in ideal conditions. For your needs, you have to know the initial water temperature at first, but also the characteristics of your boiler.
Which quantity does "Q" denote in your question? In the framework of electrical power, it usually stands for reactive power, and in the ideal case (neither capacitive nor inductive elements) the reactive power when operating a boiler is zero.
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