Norman Albers

Awesomely analytic! I've heard that most places in the USA you can feed back to the grid at least the amount you are sized for. This is a serious problem to developing largescale windfarms; they need to be near grid mains.

Not simpler, just clearing out parameters. Yo, babe, I did entertain the idea of putting my little Sanyo refrig. into the window, for 160W x 3 = 500BTU/hr. WHOA, BETTY.

Yeah, well, I use the Hubble face of Mars as a scowl like a Samurai warrior, fitting for the occassional encounters which require an honoring of our closest approach in 30,000 years.

Steel is iron with a little carbon and traces of (?); iron has atomic no.26. Tungsten was used and has atomic no.74, quite dense. The point is that yes, this is all cooking up, way up! This must take z-pinch time which takes current pulsing time. What is this ramp-up time, microseconds?? Something gave positive feedback to a stage of final fireworks, which was how long? I'd guess nanoseconds or less. Think of the different phases everything goes through as it's heated drastically (even Insane_Alien's mother).

Aha, am I missing this? I shall review the heat cycles, with mechanical and heat energies. Location matters only for the loss component. Swansont was driving at the same point. . . . . . . . . .Time passes. . . . . Yes I see finally. Say with my AC unit, 500W, which is equivalent in heat to 1500 BTU/hr, is the input which drives 4500+BTU/hr. out. So disregarding loss, all 6,000 BTU of the sum are being thrown out. I we were using that, using the heat to heat ourselves, we would be getting 6,000 rather than 4,500 BTU/hr move for the same 500W input.

You must distinguish between the useful thermodynamic work done by the motor/compressor, which might be 3/4 of the power input (?). What is wasted as heat of the motor can be recovered only in the case of heating. This is a slight advantage but not to be confused with basic thermodynamics. If these numbers hold for analyzing my little 500-W A-C unit, a loss of 125-W is (factor of 3) 375 BTU/hr. The unit is rated at 5,000 BTU/hr, so here is a 7-8% difference, yah???

Here's the idea I get from just getting into this. The clearest statement I've seen said that you'd expect a cosine relationship between two detectors, which is expanded as [math]1- \tfrac{1}{2}\theta^2[/math]. What is measured is a [math]\theta[/math] term. This suggests to me a sine component to be explained.

What better question is there but, "Why does an amount of energy find itself stable in a certain configuration?"

What aspect of the wires lasted longer? They become a plasma of themselves and plasmas conduct current. Are they in vacuum, or heavy hydrogen?

They say the proton-boron reaction yields no other radioactivity. How nice.

What I need almost bad enough to build it, is an electric garden cart/wheelbarrow for fairly rugged country performance but only a kilometer of range for a 100 kg load (of firewood, say).

Relatively can we say the low 'sink' in the cycles is maybe 20C or so different, and that this approaches 10% of the absolute temp 0f 273K? Is the cooling worse than 10% more difficult?

If you are in a small apartment, say, and the building is poorly heated and cooled, this is the problem!. Sure everyone could run a little electric heater or two but this is the most expensive heat, usually. Putting in a vented propane heater might cost less but you need to research local market prices. I have not yet seen small wall-mount heat-pump units other than AC.

Infrared radiant loss is usually roughly one-third of the total load, so yes radiant layers that reflect back across some space, like the vented attic with the super-hot roof. How's this idea of mine and Tom Sawyer??? Remember he whitewashed the fence? Is there a simple whitewash we could spray on our roofs in summer? I have medium-light colored 3-tab shingles but white would be cooler. . . . . . . . . . . . Hey Swansont, in either heating or cooling with a heat pump, you are pushing heat against a similar gradient. I recall, though, that thermodynamic efficiency is a ratio of a difference to an absolute temp, or some such. Typically I cool against a 15C difference, and heat against maybe 18C. We in the Pacific NW have enjoyed relatively low electric rates; I'm not telling.

Part of your air conditioning need in summer is to get rid of humidity. When my house goes above 55%RH, I feel 'close' in that skin doesn't evapoate sweat as well as when it is 50% or so. The booklet for the AC says actually that it will 'take out excess moisture', which says that a compressor cold-side will quickly take water out of humidity-laden air. Observe that this necessitates the exchange of the heat of vaporization, and this is compressor work also! I say use a small AC upstairs and of course fans are smart. Windows curtained, as I talk about elsewherere, saves loss hot and cold. In summer you need to stop sun and conduction from hot air, both. If your upstairs system can be shut off in an unused room or two you can hog more of the air. Check the distribution conduits for tape-sealing and insulation, especially if they're in the hot attic. HEY PHI, given the multiplication from thermodynamics, what then is the relative measure? In the more rural West we have not the centralized natural gas you folks do so homes have propane trucked in. . . . . . . . Attics may have a power exhaust you can check, which speeds the super hot air going out the eaves or vent stack. Especially this is so when insulation lays on the ceiling of the upper room, and the roof-attac space is HOT.

Lo and behold, a major article on levees and controllable dykes in this issue of Sci.Am..

Be careful here. I am a 30-yr experienced piano tuner and rebuilder. Swamp coolers put plenty of humidity into the air, which is fine if you are west of the Rocky Mountains in the USA. In the east parts, summers are humid and the moisture is part of the air conditioning problem. Pianos are large and sensitive humidity gauges and I spend efforts with clients to stabilize their humidity level, so they can see I am a good tuner!

Homes often have reversible heat pumps for both heating and cooling. I know heating-wise efficiency goes from something like 2.8 down to 2.0 as outside goes below freezing. Those with generous wells sometimes do a water exchanger. I'd like to know the relative efficiency of the AC cycle when outdoors is 35C. .. .. .. .. .. .. .. .. .. ..A few years ago I got the smallest AC unit to mount in my back wall for those peak hot days. I'm glad I waited this long because they are much more efficient now, at 500W for an extraction of 5,000 BTU/hr. I used about $15 over two months of heat spells. .. .. .. .. .. .. .. .. .. .. A while back I compared heat available from raw electric hotplates vs. propane. It came out roughly equal.

The 6,400-Angstrom Alpha (N. Hawthorne).........WEST SIDE CULTURAL ANISOTROPY (Leonard Bernstein)...

The bridges do give and spring back. This is called elasticity. A bit of energy is lost in bearing points and internal stress of steel and asphalt, etc. We should expect, however, that as much as the bridge continues to bow down more as a truck approaches its center, so much will it spring back as the truck transits. Taking power out by a 'big piston' under the center will give the physics I described.

Is it so that you describe the interaction of two currents, only? Consider a current-carrying wire next to another conducting mass having no current. Wouldn't your field, where there is 'net excess charge', produce charge separation observable in the mass?

After some Wikipedia study I see that Compton scattering is from bound electrons and so is not what I am seeking here. Rather, Thompson scattering as I see in some plasma cosmology (Wiki that) discussions. I guess I need to get to the relativistic scenario. In the range of 10 to 100 MEV it seems to me that protons would be 'mildly relativistic' (beta of a few tenths) while electrons have high beta.

I see chilihed answered my combustion questions on the first page, in spades!

Good enough. This brings up a question of thermodynamic energy per mass. Is there something inefficient, like having to operate a heat cycle at low pressure differentials? Think of autos, where higher compression ratio gets you fundamentally higher thermo effeiciency.

I'm only starting to psyche out what you are speaking of but it's somewhat clear. Any throttling back should be controllable by spill. They dam a small river here to hold some floodwaters for summer. Major floodgates must be part of it, sized for maximum rate and height events. Release is always controlled from both top and bottom of the fairly deep pool, here.