BTS, yes there are other fusion techs, but that's changing the subject. I am referring only to the cold fusion device described in the OP.
Razziel
JoinedPosts by Razziel
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36
Cold Fusion Update
by metatron inhttp://coldfusionnow.wordpress.com/2011/10/06/first-commercial-cold-fusion-reactor-tested-in-bologna/.
i continue to think that this device has survived too much examination to be completely fake.
the remaining question is how efficient is it?.
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36
Cold Fusion Update
by metatron inhttp://coldfusionnow.wordpress.com/2011/10/06/first-commercial-cold-fusion-reactor-tested-in-bologna/.
i continue to think that this device has survived too much examination to be completely fake.
the remaining question is how efficient is it?.
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Razziel
I'm sorry Bohm, I have to disagree. It doesn't matter what the process is, it's cold water in, hot water out. The process that raises the temperature is irrelevant to theoretical efficiency and it's still governed by elementary thermodynamics. A nuclear power plant uses fission to provide superheated steam (through heat exchangers), but it is still governed by basic thermodynamic efficiency. The process doesn't matter, all that matters is that heat transfer takes place.
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36
Cold Fusion Update
by metatron inhttp://coldfusionnow.wordpress.com/2011/10/06/first-commercial-cold-fusion-reactor-tested-in-bologna/.
i continue to think that this device has survived too much examination to be completely fake.
the remaining question is how efficient is it?.
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Razziel
Bohm,
I'll hit the points in reverse order.
The efficiency is defined according to the specific thermodynamic cycle used. (Rankine, Brayton, Sterling, Otto, Diesel, vapor-compression, etc.) However, the efficiency is always less than the Carnot efficiency (1-Tc/Th) which is the theoretical maximum efficiency of a heat cycle. It is irrelevent the type of fuel, the type of reaction, be it chemical, combustion, or nuclear, it is still a thermodynamic cycle to extract useful energy.
That is one of the beauties of thermodynamics. Without knowing anything about the process used, you can learn how much energy you can possibly get out of the thermal system based on input and output temperatures alone. This is a great solution check when analyzing a system. If the thermal efficiency of your system comes out greater than the carnot efficiency, you immediately know you calculated something incorrectly.
The closest analogy I can think of is analyzing a complex electronic circuit with Norton and Thevinin equivalents.
I won't get into too much detail about state changes, however the additional energy added is fully accounted for by the enthalpy values in a standard steam table or enthalpy-entropy chart. Basically you use constant temperatue at the given pressure and the change in entropy as the steam changes from saturated liquid to saturated vapor to superheated steam (dry steam) and find the new value of enthalpy using the thermodynamic relations. The efficiency is the ratio of enthalpies of the cycle input and the cycle output. There are all sorts of ways to increase the efficiency; superheating, regenerative heating, feedwater heaters, combined cycles, etc, but the thermal efficiency of the system is always less than the Carnot efficiency.
For the second point, since I haven't really seen what "self-sustained" mode is, who knows. Perhaps after initially heating his water source, the temperature change through the reactor is enough to offset heat loss from conduction out of the system. The system is obviously not abiabatic. He can dump the fluid back in his source tank and keep it at the original temperature. That would be self-sustaining until his reactants ran out.
Finally, I know it seems counter-intuitive because there are so many other variables involved, but in a heat cycle such as this, temperature difference between input and ouput tells you the maximum efficiency possible.
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36
Cold Fusion Update
by metatron inhttp://coldfusionnow.wordpress.com/2011/10/06/first-commercial-cold-fusion-reactor-tested-in-bologna/.
i continue to think that this device has survived too much examination to be completely fake.
the remaining question is how efficient is it?.
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Razziel
I believe cold fusion exists after taking quantum physics in college, if only because of the uncertainty principle. There is no reason that I could find that the right atoms, under the right conditions, would not occasionally fuse because of atomic position uncertainty inherent in nature. I asked the Professor this question and his response was "We don't know, but it's definately possible."
The problem is, Quantum Mechanics is all about probability, and the probability of two atoms fusing in the absence of high temperature and pressure is very low. Therefore if the basis of current cold fusion is quantum mechanical effects, the energy output is also going to be very low.
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36
Cold Fusion Update
by metatron inhttp://coldfusionnow.wordpress.com/2011/10/06/first-commercial-cold-fusion-reactor-tested-in-bologna/.
i continue to think that this device has survived too much examination to be completely fake.
the remaining question is how efficient is it?.
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Razziel
In other words, even though technically the reactor produced 3500 watts of net energy, you would be lucky to harvest enough energy to power a single 40 watt light bulb.
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36
Cold Fusion Update
by metatron inhttp://coldfusionnow.wordpress.com/2011/10/06/first-commercial-cold-fusion-reactor-tested-in-bologna/.
i continue to think that this device has survived too much examination to be completely fake.
the remaining question is how efficient is it?.
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Razziel
Even if this is real, it has a long way to go before it would be practical, because of the concept of exergy and Carnot efficiency. It is difficult to extract useful energy from a thermal gradient of 5 degrees. The theoretical maximum efficiency (1-Tc/Th) of a heat engine with such a small difference between thermal reserviors would be about .01%. You would have to have massive quantities of reactants and have a massive mass flow rate of steam to get anything useful at that efficiency.
That blog calculates the absolute energy change of steam for 5 degrees with that mass flow rate and in absolute terms it sounds like a lot, but thermodynamics dictates the amount of useful work you can actually get for that temperature difference is very very small.
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Razziel
Based on the fictional character Raziel... Redeemer and destroyer... Pawn and messiah. Also an archangel who is the Angel of Mysteries and Keeper of Secrets in Jewish mysticism. I used the name for several years in an MMORPG as a Dark Elf.
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Do you tell people?
by MrFreeze inas an ex-jw do you tell people about your jw past?
how much detail do you go into when you tell non-jw's about the organization.
i usually only ever say anything if somebody asks about my religious affiliation or mentions jw's.
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Razziel
I rarely bring it up because few people, even close friends, I've talked to really get how pervasive and controlling the religion is. Most just think it's a quirky and harmless little religion known for knocking on doors and not celebrating holidays.
You really have to get into the little details about all of the rules, and the shunning, and the constant mind altering and repetitive literature that trains us to act like obedient dogs. Even then most don't get it if they haven't lived it themselves.
As a born-in, even being out several years, I have to mentally make myself step back every day and realize I'm still looking at a news article, or a conversation with someone, or an outlook on life through a warped JW worldview. After so much indoctrination, your mind just gravitates to that way of thinking and it takes a huge mental effort to figure out what is motivating my current viewpoint and decision-making process.
Mostly, only trained professionals really understand what years of indoctrination does to your mind. Others will just think you're a little strange if you talk about it too much.
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CERN claims faster-than-light particle measured
by botchtowersociety inhuh?.
cern claims faster-than-light particle measuredgeneva (ap) -- a fundamental pillar of physics - that nothing can go faster than the speed of light - appears to be smashed by an oddball subatomic particle that has apparently made a giant end run around albert einstein's theories.. scientists at the world's largest physics lab said thursday they have clocked neutrinos traveling faster than light.
that's something that according to einstein's 1905 special theory of relativity - the famous e (equals) mc2 equation - just doesn't happen.. "the feeling that most people have is this can't be right, this can't be real," said james gillies, a spokesman for the european organization for nuclear research, or cern, outside the swiss city of geneva.. gillies told the associated press that the readings have so astounded researchers that they are asking others to independently verify the measurements before claiming an actual discovery.. "they are inviting the broader physics community to look at what they've done and really scrutinize it in great detail, and ideally for someone elsewhere in the world to repeat the measurements," he said thursday.. scientists at the competing fermilab in chicago have promised to start such work immediately.. "it's a shock," said fermilab head theoretician stephen parke, who was not part of the research in geneva.
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Razziel
This story is tachy..
But puns aside, I'm betting the experiment's range of uncertainty will eventually be found to be larger than the measured value. I read elsewhere that the time measurements were based off of the GPS system which has error in the tens of nanoseconds.
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I am trying to figure out my future if I should go to college or just keep working a regular job...............................
by andys ini am faced with a dilema right now and need some advice on what i should do with my future, i realize that eventually i'll grow old and will need to somehow work my way up so i have something to fall back on, like someone told me once i don't really have a support structure to fall back on, if something happened where i could not work i would probably wind up homeless, moving back in with my parents house would be out of the question because i would never go back to the borg.. this is my situation right now, everything is going good, i love my job, i am single no kids, i work at a hosptal making $10/hour doing janitorial work, also my rent is very cheap about $350 a month for rent on a duplex, i live less then a mile from work, right now i have the most ideal situation to save alot of money even on $10/hr job, but also i realize that everything can go all at once, if i ever lost my job since i don't have no support structure and could not find work i would be sol.. now to some of the things i like doing, i like to drive, one of the things i have always wanted to do is learn truck driving, since i don't have no extra responsibilites, i am still having a hard time though making a decision, on one hand i like my current job, but on the other hand i realize that i do have to plan for the future, if anyone can give me some advice i am at a loss of what to do, also because of the way the econommy is here in the us right now sometimes i think its best to stick with the job that i have but still don't know whats best..
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Razziel
You mentioned you are able to save some money up in your current job. I would advise before you do anything, try very hard to save up a six month emergency fund. Then don't touch it. If you go back to school, and something happens where you lose your job, or if you get sick for awhile and can't work, you'll have a few months to get better or find another job and get back on your feet without being SOL.
If you want a bang for your buck technical degree which gives you something to fall back on, think about being a Nurse. You can easily make over $20/hr (often much more) with a 2 year Nursing certificate, and you will never have to worry about finding a job.