You must have seen advertisements and endorsements of the new “it” thing in the cooking industry: Induction Cooktops! They look sleek, trendy, and you honestly, wouldn’t mind getting your hands on one of this equipment to cook your day-to-day meal in style. But are induction cooktops just good to look at? Or are they efficient and useful too? Let’s take a look at how induction cookware works.
How they work:
Induction cooktops cook food using direct induction heating of the cooking vessels, rather than relying on indirect methods of heating the vessel like thermal conduction, convection, or radiation. Induction cooking allows very rapid increases in temperature to be achieved through the high power supply, and changes in their heat settings are instantaneous. The only requirement for cooking at high temperatures and acquiring it quickly is that you have to do it at the cost of your electricity bill running a little high.
The work involves a coil of copper wire being placed under the cooking pot and an AC current (or alternating electric current) being passed through it. The resulting flux of the magnetic field induces an electrical current in the pot, wirelessly. This large current, known as the Eddy current that flows through the resistance of the material of the cooking vessel results in, what we call, resistive heating.
The vessels used for cooking on an induction cook-top, must be made of or contain a ferrous metal like cast iron or stainless steel. The vessel’s iron concentrates the current to a small area, to produce heat in the metal. Effective heating cannot be achieved if the metal is too thin, or it doesn’t provide enough resistance to current flow. Most induction cooktops cannot heat vessels made of materials like copper or aluminum, because the magnetic field cannot produce a concentrated current. Induction cooktops that are completely made of metal use much higher frequencies to overcome this effect and generate effective heat.
Advantages of cooking on an induction cook-top:-
- Cooking on an induction cook-top that’s got good electrical coupling between the vessel and the coil is efficient.
- It reduces heat wastage by a lot.
- It can be turned on and off quickly.
- Safer to use than conventional gas stoves.
- Cook-tops are easy to clean up.
Now you know how induction cook-tops work! All those Physics-related terms might not make any sense to you (Physics tough y’all), but that’s okay. You can count on this technology to replace your regular gas stoves around the house. Get your hands on an induction cook-top and test the experience of cooking with it by yourself!