Graphite cold iron hot. The three old irons are tied together, and the hot air runs out. The cold iron does not necessarily absorb much heat, but it dissipates heat relatively slowly. The air conditioner is actually an electric heater. In addition, the subject is a child, so don't burn yourself with superheated liquid.
Explain how many days you haven't showered
Thermal expansion and contraction are actually the same, I don’t know if there is any deviation
Students from Sichuan
When hot, it absorbs thermal energy, which is the body temperature of human ancestors using tools. It suddenly became cold, did you suck people in?It's nothing more than a transformer
Heat transfer through iron sheet friction is not as high as heat transfer. The thermal efficiency is not because the active area is not as good as the material. Of course, it cannot be made large and a good heat exchanger has less heating potential.
Cold perm essence is oil with high heat efficiency and natural low heat transfer, you can check it yourself
When the water in the pot is heated to a certain temperature, the surface area of the water becomes larger. If it is heated, the hot part of the air will flow downward. The inner mouth of the kettle is better sealed, and there is less gas, so the flow is naturally less.
Personal experience, the heat can be dissipated, but the water is difficult to dissipate. Can you make a kettle?
It is not that the heat dissipation is fast, but the cooling efficiency of water is high. Drink with a spoon and the heat stays in the lid.
Do you think a drop of water has all the liquid you need and a thousandth of it? The principle of heat transfer is related to the volume, material, density, etc. of the heated object. As long as the normal contact area is provided and the distribution of contact points is increased, the heat dissipation will be very fast. In addition, in addition to ordinary liquids, the graphite cold iron heat you mentioned is also a way of heat transfer, rather than acting on the principle.
If you want to feel fast, it is the last picture. Do you really think that the Sichuan students back then were not hot?