## Re: [AMBIENTENERGY] Horsepower

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• Dear Sir , ******************************************* Do you know the efficiencies of today s solar cells ******************************************** To only
Message 1 of 2 , Jun 1, 2001
Dear Sir ,

*******************************************
Do you know the efficiencies of today's solar cells
********************************************

To only partly participate please check

http://www.benwiens.com/energy1.html

I am pasting the relevant portion for your quick view

*************************************************
The light from the sun has an average temperament of
about 6300°K. The carnot-ratio diagram of Fig 26 shows
that the helmholtz-ratio of sunlight is about 95%.
This means that theoretically it should be possible to
convert 95% of the radiant-energy to electricity. In
actual practice, present day solar cells only convert
most. This means that 89% of the remaining sunlight is
converted into thermal-energy
*************************************************

Regards .

Vikrant Suri

--- Boyd Cantrell <bmc@...> wrote: > Charles,
>
> In message 102 you said that a Horsepower can take
> place in one second. I
> have been wrestling with this and I guess I'm
> finally accepting it. I had
> always thought that lifting 33,000 pounds one foot
> in one minute actually
> mint "one minute" or else the rate of power would be
> different. I knew of
> course that it could have been lifted in ½ minute
> but thought the energy
> expended would then have to be at the rate of 2
> Horsepower for ½ minute.
>
> If it turns out that one square yard of the earth's
> surface actually
> receives over a thousand watts per second
> constantly, then it's about 60
> the Sun had to shine
> on it for a full minute to be one Horsepower. Now I
> find that it only
> takes one second.
>
> I don't know the efficiency of today's solar cells
> but 30 years ago they
> were about 6%. So 6% of 1000 watts per second is
> about the heat of a 60
> watt incandescent light bulb continuous.
> Even with the above losses of around 94% this is
> still a lot of free
> energy. Do you know the efficiencies of today's
> solar cells?
>
> My interest here does not mean that I could prefer
> solar energy over
> converting the heat in a single reservoir it into
> work. That will always
> be paramount to me simply because the world teaches
> that it can't be done
> and I don't believe them.
>
> My new interest in Solar energy is finding out that
> the rate is 1.5
> Horsepower every single second instead of every
> minute. This extrapolates
> out to visualizing what my would-be Apparatus
> (which is to work in the
> shade) would do if the input heat exchanger were put
> out into the sunlight.
>
> Anyway, I'm trying to accept that 746 Joules per
> second is the same as 746
> watts per second.
>
>
> Boyd
>
>
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>

=====
http://www.geocities.com/vikrantsuri3/index.html
vikrantsuri@...

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