Posted on 12/16/2001 2:16:12 PM PST by John Jamieson
I forgot that part, John. You may proceed with the ass-kicking!
I'm DIT 69. I watched a dear friend, a great engineer, go completely insane, working on a 'Perpetual-Motion' project involving magnets.
"... "Until the auto makers or somebody else comes up with an alternative to R-134a that provides a significant advantage such as lower energy consumption, better cooling performance and/or lower cost than R-134a, it looks like R-134a will be the refrigerant of choice for all new vehicles for some time to come, and the primary retrofit alternative for older R-12 systems."..."
Freon was a gift-from-God, John. Why do YOU think 'they' changed to R-134a? I would love to hear your opinion, pal. Merry Christmas John......FRegards
You MIT people never had any respect for the other Engineering Schools that actually keep this great Country running, bub!
"...I still don't know who gonzo is, and I'm devistated[sic] to say I don't know what DIT is. I'm losing my once pretty good mind. .."
Well, need I say more?
John, you registered here on FR on 2-25-98. I wandered by on 3-10-98. We're usually on the same page, pal, but this denigration of DIT has to stop!
The Detroit Institute of Technology made me an engineer, pal, and I are one, and proud of it!
The longest nine-years of my night-school life, bud, but I had to have it!
Merry Christmas, John, and don't worry! I know you'd never impune it......FRegards
You MIT people never had any respect for the other Engineering Schools that actually keep this great Country running, bub!
"...I still don't know who gonzo is, and I'm devistated[sic] to say I don't know what DIT is. I'm losing my once pretty good mind. .."
Well, need I say more?
John, you registered here on FR on 2-25-98. I wandered by on 3-10-98. We're usually on the same page, pal, but this denigration of DIT has to stop!
The Detroit Institute of Technology made me an engineer, pal, and I are one, and proud of it!
The longest nine-years of my night-school life, bud, but I had to have it!
Merry Christmas, John, and don't worry! I know you'd never impune it......FRegards
Naw, he just has one of Maxwell's Demons sitting there directing traffic: "Hot, you go this way, cold you go that way..."
Simple one... the patents on Freon had expired.
It's just like the old saw of Sherlock Holmes and his trusty assistant Watson. The two were on holiday in the countryside, and Holmes exitedly woke his collegue up in the middle of the night. Watson groggily asked his mentor what was the matter. Barely able to contain his excitement, Holmes asked Watson what he profoundly notices.
"It will not rain in the immediate future."
Holmes exaperatedly follwoed with another question, "how to you notice that?"
"Since I can see the moon and the stars, I can deduce that there are no clouds, ergo it will not rain in the immediate future." Watson smugly responded.
"My dear Watson, what you observe is totally correct, but the elementary thing that first must be noticed, is that somebody has stolen our tent!"
The coils are spinning about the axis of the shaft (parallel with the axis of rotation of the exhaust fan.
After looking at this for awhile, the exquisite elegance of the contraption made itself apparent. The the whole thing becomes quite clear. Understanding elementary concepts of torque, angular momentum and moment of intertia will explain how the machine functions. If torque is applied to a body at rest, an angular acceleration will be imparted to the body (radians/sec^2). Just as linear velocity is equal to angular velocity times distance to the center, linear acceleration equals angular acceleration times distance to the center ie. a=r(alpha). If we combine this with the second law of motion by substitution, we derive f=mr(alpha). Since torque is force times the distance from the center (T=fr),we can substitute T for force and derive T=mr(alpha)*r. This simplifys to T=mr^2(alpha)
Knowing that the ratio of f to acceleration is equal to the mass, we can rearrange our equation and derive:
T/alpha=mr^2
What this tells us is that rotational motion, mr^2, is analogous to mass alone in tranlsational motion.
If you examine the diagram, you will notice the coils change their radius at differant points along the shaft (realize that the change in distance imparts an exponential increase in force. Very nice, indeed. I don't believe that balancing the shaft would be very difficult. After all we've mastered how to balance reciprocating engines of Titanic proportions (this should be like childs play).
I went back and reread the PS article in the Jan 2002 issue. I think now that this thing is a fraud.
"He (Kidwell) poured water into a bucket, swung it in a circle and as he expected, the water stayed put. Next he laid one end of a hose in the bucket, draped the other end over his shoulder and taped the rest to his arm. When he swung the bucket again, water was forced through the hose."
Yes, water was forced through the hose, but not towards his shoulder, but into the bucket. He demonstrated nothing that couldn't have been demonstrated by just slinging the hose around!
....has built a protype that Kidwell says uses half the electricity of a standard airconditioner.....
Ok, but does it cool anything?
Sure the machine could cool. Moreover, depending on the spin vector (positive or negative) it could do that or heating. What contains a liquid? Answer: The walls of the container. If you placed some liquid at the extreme right side of the right coil, and begin rotating the shaft, the liquid would move to the left due to angular acceleration. Eventually the liquid would concentrate in the coil section with the greatest radius (centrifigal force would cause it to collect there) and this liquid - at high pressure - would continue to move to the left as more fluid is introduced into the system from the right side, angular momentum eventually fills the entire left half of the right coil with liquid at low pressure.
The orfice then would regulate the flow of the liquid into the left coil. If the liquid's flow was controlled enough to allow expansion into a gas, the gas would absorb the heat of the surrounding air (Charles-Boyle combined gas-law). Again the gas would be drawn to the middle of the left coil due to angular momentum (the gas has mass). This is the low-pressure gas side. Once the pressure has built up to equilibrium on the right half of the left coil, the gas moves to the left half of the left coil and its velocity increases due to an increase in angular velocity to to the decrease in angular radius) - low pressure. The velocity is further increased by a further decrease in the angular radius inside the shaft (even lower pressure). This is high pressure and due to decrease in anguler radius, high velocity gas.
At moves left to right through the shaft. As the high pressure - high velocity gas comes in on the right side, it condenses due to cooling by radiation and convection cooling and the cycle starts again.
At that rate, my great-grandkids should see some considerable savings on their cooling bills.
If your interested in refrigeration, have you checked out Thermal accoustic stirling enginges? Pretty cool stuff.
Simple one... the patents on Freon had expired..."
Close, Swordmaker, but the licensing of the process to manufacture Freon never left the control of Dupont.
The fight to demonize Freon took over 30 years, and the science is junk, but Bayer and BASF are now making refridgerants that are less efficient than Freon, and Dupont no longer has a monopoly.
The histories of Farbenfabriken-Bayer and Badische-Analine-Soda-Fabriken are facinating.....FRegards
Simple one... the patents on Freon had expired..."
Close, Swordmaker, but the licensing of the process to manufacture Freon never left the control of Dupont.
The fight to demonize Freon took over 30 years, and the science is junk, but Bayer and BASF are now making refridgerants that are less efficient than Freon, and Dupont no longer has a monopoly.
The histories of Farbenfabriken-Bayer and Badische-Analine-Soda-Fabriken are facinating.....FRegards
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