Joule Thief 101

[MileHigh]

Webby, pull yourself together and show some self-respect.

Brad, no, if you are going to draw an analogy between capacitors and air tanks then you wait for the air tanks to reach thermal equilibrium and you have lost half of your energy.

Both of you are being ridiculous and making fools of yourself.  That's no surprise.

[MileHigh]

All that I wanted to do was make it clear that I was not lying about the epoxy coil business, that's all.  But clearly Brad you could not comprehend what I was saying and/or you took that as an opportunity for yet another display of gratuitous ugliness.  You have really exposed yourself in this thread.

[tinman]

Nice read...and yes it is odd how fast it can be read .

perhaps I might interject a thought regarding the Airtank and MH's analogy .

all venturi effects or Temp/Phase /gravitational/ Buoyancy  effects out of the equation .


if you place two identical tanks next to each other ,

tank A has 100 lbs of air

Tank B Zero

you will never get over 50 lbs into tank B from Tank A

So a total transfer is impossible , but all the energy is still in the system.

Absolutely correct.
Now,what if that transfer line between tank A and tank B had a venturi entry into it.
Tank A starts with 100 psi,tank B starts at atmospheric pressure-0 gauge pressure.
We open the valve on tank A to allow the compressed air to start to flow into tank B,and at the same time it is drawing in ambient air through the venturi. At the point where the pressure in tank B stop's the venturi effect working,the venturi is shut off,so as air cannot escape via the venturi valve. The compressed air is allowed to continue to flow into tank B,until pressure equilibrium is reached between the two tanks.
The result is
1-you finish with a higher equilibrium pressure in the two tanks,as you added more volume of air into the system via the venturi.
2-As the pressure is now higher,so will be the two end temperatures in each tank.
3-Because you now have a higher pressure equilibrium in the two tanks,the volume of compressed air has also increased.

This leaves us with more stored potential energy that we started with-and that's a fact.


Brad

[ramset]

In your example you will end up with more than you started with.

and there are other scenarios too.

[tinman]

Webby, pull yourself together and show some self-respect.

Brad, no, if you are going to draw an analogy between capacitors and air tanks then you wait for the air tanks to reach thermal equilibrium and you have lost half of your energy.

.

You are making a fool of your self MH.

When i did the test with MarkE,one tank was pressurized to a certain pressure,and then left to sit to reach room temperature. This meant a drop in pressure and inside gas temperature.
The tank was then topped up to our regulated pressure (set pressure throughout the tests).
Once again,it was left to drop to room temperature. The compressed gas in tank A was then let flow into tank B,and then once pressure equilibrium was reached,the gas inside the tanks was once again left to sit until room temperature was reached.

With the venturi switched off,we had an exact potential energy transfer from one tank to both tanks--nothing was lost. This set the bench mark for the venturi tests,and also made it clear that the tests were being carried out in a controlled manner.

When the same tests were carried out with the venturi in play,the results showed an increase of 16% of stored potential energy in the two tanks.

The very same tests were carried out with all of the DUT now heavily insulated in thermal wool.
This allowed us to skip the waiting for the gas inside the tanks to drop to room temperature.
The results were exactly that of the first set of tests.

So do not tell me that energy is lost through the air tank transfer situation,as you are totally wrong.

Both of you are being ridiculous and making fools of yourself.  That's no surprise

What is no surprise MH,is you got it wrong again.
This is becoming a habit with you.
Time and time again,you have made claims that i am wrong,and time and time again,i have proven you to be wrong-->and it just happened again.


Brad