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Wednesday, March 18, 2009

using a microwave or stovetop instead of an oven saves tons of energy

when buying an appliance it would be a great idea to look at the wattage that is printed at the back of the appliance. And then by usign the wattage you can easily calculate the number of units of energy the appliance is going to use.
saving energy is not only good for the environment but also saves you money.
btw, an oven works on the principle of using electricity to heat up metal rods which then cook your food by radiation rather than direct heat.
See heat gets trasmitted by conduction where the food is in direct contact to the heat source(like say grilling on open fire or on stove top griddle pan etc, convection is mostly associated with heating liquids, where the hot liquid moves up and such.
oven works on radiation principle, where first off the rods get hot and make the air inside the oven hot and the hot air cooks the food in the oven for most part.ya know.
The problem with radiation is that, a lot of heat is lost to the surroudings.
Have you noticed how very often if you have been on a baking spree, how the whole kitchen gets warmer than usual?
that is because, heat is getting lost from the oven to the outside.
That is a waste of energy that coudl be avoided.
for eg. for many items like casseroles , try making them in a microwave than in an oven.
Microwave works on a whole other principle where micrwaves vibrate the food particles that then produce heat. the advanatage is that , the moment you switch off the microwave , the waves stop and no more heat loss.
try it. try using methods like stove top cheesecake making rather than oven, avoid energy wastage.

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