– Water boils at 100 degrees Celsius at STP (Standard Temperature and Pressure).
– During boiling, liquid water is converted into gas state.
– Boiling occurs throughout the liquid.
You might be thinking why the hell am i saying this. You all knew it since childhood. But still, most of you are as if you didn’t know this at all. How?
While you are cooking something in water, it is not necessary that you see huge amounts of bubbles coming out of it. It won’t cook faster if you put a stronger flame beneath it. You are just wasting energy and money. Let me explain
dQ = dU + dW
The first law of Thermodynamic says that the heat supplied to a system equal to the change in its internal energy and the work done by the system.
But what happens at the boiling point?
All the energy being supplied to the system is used to do work (i.e. evaporate the water). We call this energy latent heat of vaporization. This is because the change in internal energy is zero. Simple algebra 😛
If you are evaporating less water, you can put less water at the beginning. The water will warm sooner and your meal will be ready sooner 😉
Boiling occurs throughout a liquid. Water at the bottom is not hotter than those at the surface 😉
Summary:
– Your food won’t cook faster if you put a bigger flame when its already boiling.
– You can lower the flame at the boiling point so as only to maintain the temperature.
– Time is money. Energy is money. Saving both allows you to have 2x economy,
– You just made one step to save the planet by being eco-friendly 😀
