[time-nuts] Cheap Rubidium

[Bob Camp]

Hi

Around here when you drill a well, it's often unclear exactly how deep the water is *really* coming from. I think that anything that's safe to drink will be pretty constant temperature at the source. A typical well system here pumps the water into an above ground holding tank to keep the pump from running each time you wash your hands.  Since the pump is a non-trivial energy load that makes sense. 

I suspect that the same thing would get you using a deep well for geo-thermal.

Bob

On Dec 26, 2009, at 5:52 AM, Steve Rooke wrote:

> Hi,
> 
> In most rural or semi-rural areas over here in Canterbury, New
> Zealand, water is provided by a well on the domicile section. Wells
> are drilled into the natural aquifer formed by volcanic ash which we
> live on so it is relatively easy to create a bore hole and take
> advantage of the naturally filtered water from quite a distance below
> the surface. I wouldn't mind betting that this water comes out of the
> ground at a very constant temperature season by season and the amount
> needed to flow over the rb heatsink to hold it steady would not be so
> great as to be able to be wasted back into the drains.
> 
> Ths would save all the messing about pumping water down into a bore
> and pumping it back up again. Although I appreciate that not everone
> is in the position to do this but some may already have a water supply
> like this, even for garden irrigation. When I lived out in the sticks
> I had reticulated water on the drip for the house uses but my own bore
> for garden irrigation.
> 
> 73
> Steve
> 
> 2009/12/25 Bob Camp <lists at cq.nu>:
>> Hi
>> 
>> Actually burying a recirculating loop might work pretty well. The gotcha is that going much deeper than 18" would require significant amounts of blasting powder. I suspect the neighbors *might* object ....
>> 
>> Bob
>> 
>> 
>> On Dec 24, 2009, at 3:32 PM, Don Latham wrote:
>> 
>>> Actually, couldn't you just squeeze your fish before you eat it? Should
>>> have a lot of mercury in notime, according to the scaremongers.
>>> Also, consider a heatsink buried about 10-15 feet deep. The temperature at
>>> that depth in the ground does not vary very much at all. The trick to all
>>> of this is to have a heatsink/source at a constant temp somewhere...
>>> Merry Christams to all the nuts!
>>> Don
>>> 
>>> Bruce Griffiths
>>>> Magnus Danielson wrote:
>>>>> Bruce,
>>>>> 
>>>>> Bruce Griffiths wrote:
>>>>>> At your location, at present, it wouldnt be a significant problem as
>>>>>> long as the basement was unheated.
>>>>> 
>>>>> Depends. But having 3 dm snow on the ground helps to keep the ground
>>>>> around the house warmer, as it will insulate against the cold of the
>>>>> open sky. -12.8 C is the lowest so far. Since winter is reoccuring, we
>>>>> build the houses accordingly.
>>>>> 
>>>>>> Also good ventilation would help, together with a thin layer of oil
>>>>>> on top of the mercury.
>>>>> 
>>>>> Mmm. Yes, didn't think about covering the baths with fluids.
>>>>> 
>>>>>> The biggest obstacle would be the cost of the Mercury.
>>>>> 
>>>>> Actually, it could be an obstcle just obtaining in those amounts it
>>>>> here within EC, so it would involve some form of approval of some form
>>>>> of excempt since it is mercury is a ROS element.
>>>>> 
>>>>> Cheers,
>>>>> Magnus
>>>>> 
>>>>> 
>>>> Guidline price is around $US600/flask (1 flask = 34.5kg).
>>>> Thus cost for 145 ton would be around $US2.5million.
>>>> 
>>>> The Canadians have a liquid mercury mirror telescope about 6m in diameter.
>>>> Whilst this doesn't use 145 tons of mercury the surface area would be of
>>>> the same order.
>>>> 
>>>> Bruce
>>>> 
>>>> 
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>>> 
>>> 
>>> --
>>> Dr. Don Latham AJ7LL
>>> Six Mile Systems LLP
>>> 17850 Six Mile Road
>>> POB 134
>>> Huson, MT, 59846
>>> VOX 406-626-4304
>>> www.lightningforensics.com
>>> www.sixmilesystems.com
>>> 
>>> 
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>> 
>> 
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> 
> 
> 
> -- 
> Steve Rooke - ZL3TUV & G8KVD
> A man with one clock knows what time it is;
> A man with two clocks is never quite sure.
> 
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