Re: [Phys-l] Which is the most E efficient?

[Bernard Cleyet <bernardcleyet@redshift.com>]

Well, I meant least expensive.

What about the "heat" input necessary to compensate for the cooling  
caused by the "swamp cooler"  (wet towel and fan)?

Is the "hear" of vaporization the same at RT and 100 C?  The E  
expended raising the water to 100 C?  These are the questions I thought.

bc  thinks an interesting question for students to "research" and  
calculate.   Does a conservation theorem apply?

p.s. How about wearing a modified dust mask with a wet screen?   I'm  
reminded of the Indian potentate who wanted to pave over his kingdom  
w/ skins for the benefit of his people -- A courtier suggested the  
invention of shoes.

On 2009, Nov 19, , at 06:12, chuck britton wrote:

> 'Efficiency' is an interesting term to use.
>
> 'Heat' input to overcome the 'Heat' of vaporization?
> i.e. how to get he most H2O molecules moved from liquid to vapor with
> the least oil/electricity input.
>
> Hanging wet sheets/laundry would seem the 'cheapest' such solution.
> But would require LOTS of sheets, rewetted frequently to be effective
> in a cold climate, especially in a 'leaky' abode.