Re: Air compressor for hull cleaning

On 24 Apr 2006 14:55:29 -0700, "Bob" <freya2go@xxxxxxxxx> wrote:


Hi Dave:
Okay........... I agree, most likely wrong. Im not sure about the dead
part, although I felt like sunday morning. Thats what I was wondering.
Let try this: > > How is BTU related to Degrees Fahrenheit?

If air is compressed doesn't it get hot? If so, how measure it? But I
guess what caught my eye was when a previous post said that compressing
air does not create heat. But I may be pretty ignorant about the term
HEAT.

Confused Bob

If I remember correcty from chem class 35 years ago:

PV=NRT

pressure * volume = moles * R * Temperature

I don't really remember the units, but I think moles is a measure of
mass, R is a constant (.082?), temperature = degrees kelvin.
Google "ideal gas law" for better info. But solve for T and you get

T=PV/NR

The rest is left as an exercise for the student :-)

____________________________________________________________
Glen "Wiley" Wilson <usenet1 SPAMNIX at world wide wiley dot com>
To reply, lose the capitals and do the obvious.

Take a look at cpRepeater, my NMEA data integrator, repeater, and
logger at http://www.worldwidewiley.com/
.

Relevant Pages

  • Re: The Stirling Engine and Life off The Grid WAS Re: Steam powered aircraft
    ... to compress air simply goes into producing heat. ... This is lost energy. ... This does nothing to help the massive energy loss in compressing ...
    (rec.aviation.military)
  • Re: Starting a Fire the Ancient Way?
    ... If you put a bit of cotton at the bottom and push down on the pluger, the heat generated by compressing the air causes the cotton to catch on fire. ...
    (sci.physics)
  • Re: Air compressor for hull cleaning
    ... I think temperature and heat might be similar. ... If air is compressed doesn't it get hot? ... guess what caught my eye was when a previous post said that compressing ... Confused Bob ...
    (rec.boats.cruising)
  • Re: Hot water to forced air
    ... passing through the heat exchanger to the ... hot water passing through it. ... eventually the temp of the air and the ... temperature of the water returning to the reservoir to 87 degrees F.. ...
    (alt.home.repair)
  • Re: Interesting Data Center
    ... circulating air through the fifty or one hundred feet long pipe to moderate ... air through a 100 feet of 24 inch pipe. ... Heat pumps have particular limitations all their own. ...
    (misc.news.internet.discuss)