. . . back to part 1 . . .
How much is inside hot water? - part 2
Experiment 2
Now it was the turn of the kettle method.
This experiment requires measurement of both electricity
and gas.
I put a cheap meter on the kettle's socket, and switched it on.
It turns out that this wimpy plastic kettle consumes only 2.2 kW.
It took three minutes to boil the water, and the amount of
electrical energy used was 0.11 kWh.
But remember, we're not there yet. We're imagining making pasta,
and we must now transfer the water to the pan and bring it
back to the boil.
This required the gas to be on for 49 seconds, and
the amount of gas used was 0.19 cubic feet.
That corresponds to an additional energy of 0.06 kWh of chemical
energy.
Continue reading part 3 of How much is inside hot water...
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