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Viewing 15 posts - 136 through 150 (of 542 total)
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  • in reply to: The Big Bang Theory Sucks… #10914
    vansig
    Participant

    Steven Sesselmann wrote:
    As now becomes obvious, the Universe was never expanding, when viewing the stars through his telscope, Hubble could see a redshift, and falsely assumed they were receeding, when in fact it was himself that was imploding.

    If everything were imploding, then symmetry-breaking would result in atoms of the same kind having different size. This is not observed.

    in reply to: Making the fusion case to Electric Car industry #10889
    vansig
    Participant

    amanasleep wrote: There is an independant variable which will continue to prevent EV’s from penetrating fully, focus fusion or no: Battery charging rates. Currently, the most advanced batteries safe enough for consumer use cannot be charged quickly, regardless of power supply, with most taking hours to acquire a charge. EV batteries that can be charged fully in under 5 minutes are probably a necessary precurser to EV adoption by the world consumer.

    Have you heard of LiFePO4 batteries?

    Lithium Iron phosphate is quick charge, and safe enough to be approved for use in the OLPC programme. http://www.olpcnews.com/hardware/power_supply/olpc_power_boost_lifepo4.html

    It has an energy density slightly less than other lithium cells, but is really very safe.

    vansig
    Participant

    there’s a shop like that, in Toronto: http://site3.ca/

    in reply to: Making the fusion case to Electric Car industry #10822
    vansig
    Participant

    For consumers, the comparisons that work for EV are: (a) the distance you can cover between recharges, and (b) time-to-recharge. To create a market for EV, these need to compare favourably to internal combustion. It’s a tough sell, because in terms of energy density, battery technologies are not yet as good as liquid fuels, and that ultimately limits the range, efficiency, and convenience of EV.

    Until the next breakthrough, LiFePO4 batteries have the fastest recharge time, and good power.

    But what charges them? it all boils down to cost per watt.

    At $1 per watt production cost, silicon solar cells are pretty good. But fusion will be better.

    in reply to: Intersting Steady State Cosmology model #10820
    vansig
    Participant

    regardless of peer review, about 97% of published science papers report finding the effect that the researcher was looking for. publication bias begins early

    in reply to: Cavitation ( gamma ray production verified ) #10769
    vansig
    Participant

    Siuboy wrote: Dear Old Timer,

    Siuboy,
    why do you keep addressing people by that, instead of their name?

    in reply to: Cavitation ( gamma ray production verified ) #10758
    vansig
    Participant

    proof reading has become too expensive and been replaced largely by automation

    in reply to: MultiFerroic conversion of heat to electricity #10740
    vansig
    Participant

    KeithPickering wrote:
    From my reading, not so much. You need to alternately heat/cool the ferroic material to make it work, it seems. That takes a while, so although current and voltage look OK on an instantaneous basis, the actual power obtained is low.

    but the temperature difference at the transition is small.

    in reply to: Explaining FoFu results using pure thermal arguments. #10736
    vansig
    Participant

    optimal zone for p+B11 fusion is ~600 keV. i believe these temperatures would be unachievable without the quantum magnetic field effect.

    When we compare thermal to magnetic regimes, Lindemuth seems an appropriate reference: http://fire.pppl.gov/fpa10_Fusion_principles_Lindemuth.pdf

    in reply to: Extracting Boron from seawater – technologies? #10708
    vansig
    Participant

    1 MW per person would have some impact on heat dissipation.

    to maintain temperature below about 50 C, users would have to dissipate
    around 620 W/m^2, which implies a spherical surface 23 meters diameter… for each person, for a radiator.

    in reply to: Senate Slashes Fusion – Action? #10697
    vansig
    Participant

    in fact “oil sands” is the greenwashed term invented by the oil industry.

    they are tar sands.

    but that does not mean that oil production necessarily needs to be polluting. the tailings sludge is a “ketchup-consistency mix of water, oil and clay”, that contains “polycyclic aromatic hydrocarbons (PAHs), napthenic acids, heavy metals, salts and bitumen”; but would be considerably remediated by incineration, if you had the energy to do that.

    in reply to: Paradoxical Fusion Commandments – Research Anyway #10685
    vansig
    Participant

    if this works for you, please use it

    Attached files

    in reply to: Paradoxical Fusion Commandments – Research Anyway #10684
    vansig
    Participant

    awesome. perhaps this image will go with it?

    Attached files

    in reply to: Extracting Boron from seawater – technologies? #10680
    vansig
    Participant

    Boron (as boric acid or borate ion) is a by-product of desalination and dietary-salt extraction from sea water, and is a well-known contaminant in fresh water wells. So you’ll be starting with a waste product, that is ordinarily regarded as a pollutant, and reversing the economics of dealing with its disposal.

    Hypothetically, extraction could be achieved by reverse osmosis in two stages, during desalination: the first stage eliminates alkaline earth halides from the sea water, but passes dissolved boric acid; the pH is then adjusted with ammonia, and a second reverse osmosis passes the desalinated water. The waste from this second pass then has boosted levels of ammonium borate.

    http://www.trusselltech.com/media/1.pdf
    http://www.lenntech.com/periodic/water/boron/boron-and-water.htm

    Yet, boron is not in short supply. “About 500,000 tons are produced per year for a price of about $700/ton.”

    Also, boric acid may be purified by re-crystallization of saturated solutions;
    solubility is 2.52 g/100 mL at 0 °C, but 27.53 g/100 mL at 100 °C.

    Achieving isotopic purity is somewhat harder. Probably some process involving boron trifluoride is used.

    If i recall correctly, presently, boron-10 (a.k.a. enriched boron) is used for neutron shielding; and boron-11 (a.k.a. depleted boron) for radiation-resistant microelectronics. Focus fusion wants the boron-11, in the form of the solid decaborane, B10H14, (or perhaps as the gas diborane, B2H6.)

    in reply to: Senate Slashes Fusion – Action? #10679
    vansig
    Participant

    It would be an error to imply that Canada’s oil is any more deadly than Saudi oil, or Alaska’s oil, or Gulf of Mexico’s oil.

    I support the notion of using nuclear energy, (even fission) to help extract oil from tar sands with less waste, and less harm to the environment.

Viewing 15 posts - 136 through 150 (of 542 total)