Reply To: Mind, Spirit, Science connection?

[zapkitty]

AaronB wrote: Looks good. I would add high-voltage lines coming out of one side,

Well, it’s intended more as a concept to hang numbers off of rather than an actual model to add details to 🙂

And if it’s supposed to be part of a distributed grid, a node, would it need particularly high voltage to supply its allotment of 2000 or so homes?

Perhaps there would be dedicated “export” nodes scattered along the grid to either provide peak power or, when local demand is low, to package their own output along with excess power from the grid for high-voltage export?

AaronB wrote: and maybe a barbed-wire fence around it.

Well, in America at least, chain link with barb wire tops. Given crime rates and the voltage for even district-wide distribution, yeah. They’re even having to secure wind turbines behind such fences.

Still want to keep folks 12 meters away from the housing in case of that impossible core breach and we want a meter of grass between the fence and the sidewalk so the land plot goes to 26 meters a side…

Y’know, in some of those socialist countries they disguise substations of similar value and power as houses for aesthetic purposes. Looks just like any other home on the block except for the warning sign on the front door.

AaronB wrote: Maybe put an EV charging station in front of the truck.

I’ll leave that to the visually-abled types 🙂

AaronB wrote: The reactor, capacitors, cooling equipment and transformers could be in the basement level to help with the shielding,

What help with the radiation shielding? All the shielding that’s needed is included with the standard 3 meter x 2 meter x 2 meter FF box in the housing… I’m still using the standard box unless and until the team changes the parameters.

And anyways a subsurface setup would make accessing equipment for installation, maintenance or replacement a bit more difficult, no? … of course one of those socialist countries might do something like that… 🙂

Anyways, the equipment housing in the generic design has no basement… instead it’s raised 10 cm off the ground on a platform that can serve as a fire ant barrier or, depending on local conditions, it can house drainage passages (with optional high speed pumps for post-tsunami duty) or even apartments for mongooses (useful for places where you might find cobras coiled amongst the ‘caps).

Of course anything I could place in the housing now besides the FF unit would just be busywork… but attached find the interior w/ some random boxes along the walls and some extra tanks of switch gas just for Derek 🙂

AaronB wrote: and the sauna for the occasional maintenance worker could be on the main level as you walk in.

Well, of course if you’re going to drag water cooling into it then you could make the blasted thing invisible 🙂

(scene: a stream wends through a park… the only odd note is the large submarine-type snorkel poking up out of the stream…)

…. anyways, here’s some intermediate figures…

previousIy I’d said:

Practical examples show that conduction and convection from similar plant heat outputs aren’t a problem for their surroundings with suitable exhaust stacks but still want to run dispersion models for insurance.

hmmm…. what’s this? online tools…. how cheap and tawdry of me would that be?

…lessee what they give us 🙂

It seems that with an exhaust temp of 250 C the governing conditions for plume rise and dispersion are superadiabatic by definition. Of course by the time the plume gets high enough for the lapse rate to mean much it’s already become a non-issue for local concerns… but the variety of calculation tools online are all aimed at finding the locations and amounts of pollutants entrained in the plume, not the plume temp itself per se.

But the tools should serve for a rough cut… here the one I’ll use for now:

http://www.ajdesigner.com/phpdispersion/effective_stack_height_equation_superadiabatic.php

With the given stats and a windspeed of 15 m/sec (33.5 mph – bad weather!) the plume rise will be 31 meters for a total of 42 m height (on a calm day that goes up to 465 m)…

… given the poor thermal conductive properties of air and the convective tendency to rise it seems that this whole heat thing just became a non-issue… except for tall buildings within a few hundred meters downwind…

Still need to model it all out properly though.

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