3 ms·
1500W for 120s gives you 180kJ. Energy required to heat water by one degree 4.19 kJ/kg/K Then, heating by 80K (20C to 100C) requires 335.2 kJ/kg. Thus, at mo
by nautilius 5y ago
1500W for 120s gives you 180kJ.
Energy required to heat water by one degree 4.19 kJ/kg/K
Then, heating by 80K (20C to 100C) requires 335.2 kJ/kg.
Thus, at most, you were able to heat 180kJ/335.2kJ/kg = 0.53kg~0.53liters. A large tea mug.
Hardly the 'large pot' that was mentioned above.
- LargoLasskhyfv 5y agoSorry, I've been unclear there. Mine are 2500W. Those I have direct and continuous experience with. But I've seen the 1500W and 2000w in action, too. I could also switch the display to Watts and use that as unit, but didn't do that, except for testing when it was new. Degrees C is the most practical for me. Anyways. They aren't that slow. That would be unacceptable for the people where I've seen them. Btw. for tea and coffee I use a dedicated boiler with about 500ml because my mug is 390ml :-) However, when new, I tested with exactly one Liter.
- nautilius 5y agoYou were very clear: “ 1500 Watt at 230 Volt heat water in about 2 minutes to boiling bubbles, 100°C” when replying to a comment about a large pot of water. That’s simply not true, courtesy of thermodynamics.
- LargoLasskhyfv 5y agoThen I've been tiiiiireeeed, or whatever. Maybe even tired of reading the same shit over and over again. Of https://xkcd.com/386/ https://xkcd.com/386/ and so on. In general that inductive heating stuff is good, and has excellent handling. If it doesn't it's either underpowered, defective, or used with the wrong pots. BASTA!