Micke@tagomago @bob Water also has a very high heat capacity, so it needs extra power as compared to other materials:
"Water has to absorb 4,184 Joules of heat (1 calorie) for the temperature of one kilogram of water to increase 1°C. For comparison sake, it only takes 385 Joules of heat to raise 1 kilogram of copper 1°C."
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