## Heat up water with low temperature steam

1. The problem statement, all variables and given/known data

- Is it possible to heat up water from 50 °C to 100 °C with saturated steam of 30 °C?
- If my hand is at 37 °C, is this 30 °C steam hot or cold when I touch it?

2. Relevant equations

Steam tables.

3. The attempt at a solution

I'm a bit confused here because there are two ways to see it.

Condensing of steam transfers heat. But temperature difference also transfers heat.
But I'm guessing that the statement is not possible. I think the steam would just stay steam and not form condensate because it would have to release heat to my hand. That wouldn't be possible if my hand is hotter than the steam?

Edit: oh wait, I just realized something. When my hand is at 37 °C, I would just superheat the steam to 37 °C... or my hand would cool off to 30 °C and suddenly when my hand would become 29 °C because of the surrounding cold air I would feel a surge of hot warmth to my hand and it will be kept at 30 °C.

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