Induction Cooking: Is it really more energy efficient? (US Dept of Energy)

Chemicalkinetics | Jul 12, 201506:56 PM     296

Induction cooking has a lot of advantages. It is fast, high power, easy to clean up, and it is elegant. I have been to a couple Asian hotpot restaurants where all they have are induction stoves for the hotpot/shabu.



They are safer for the customers to use (remain cool) and easier to clean up afterward.

Induction cooking is here to stay.

Yet, we were also told that induction cooking is more energy efficiency than other means of cooking. Yet, I was never convinced that induction cooking is environmentally better than gas cooking because they use different energy sources to begin with. We had this debate many times before, and I won't want to open up this debate here again.

Let's focuses on something else. At the very least, we are often reminded that electric induction stoves are far more efficient than electric resistive coil stoves: Induction vs Resistance. They both use electricity. The comparison is very easy to make and we have been told that induction stoves are simply better. **However, a 2014 study done by US Department of Energy showed otherwise. It showed that induction stoves are no better than coil stoves.** (see attached image) This results were repeated in two labs and also using different testing blocks. The problem isn't because electric coil cooktops were doing much better than we previously thought. Rather, induction cooktops appeared to do worse than we were told. The story got even worse later for the induction cooktop, but I won't go into that. Here is the full report:


Based on this report the induction cooktops are not more energy efficient than electric coil. Keep in mind that this is designed/done by the US Department of Energy. So this could be a poorly designed experiment by the US Department of Energy.

The other thing to keep in mind is that induction cooking offers many advantages over other cooking methods. So, there is no need to throw away your induction cooktop. It is just that people may want to think twice about buying an induction cooktop just so they can save the environment.

Do you care that induction stoves may have no energy efficiency advantage? Is that even the main concern for you?

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