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Cold water return for a hot water line Bob 07-20-2005
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Posted by Bob on July 22, 2005, 2:16 pm


Olaf wrote:
>
>
>>Interesting little machine, but not economical for me. I
>>don't pay for the volume of water that I use - flat annual
>>fee and electricity to heat the water is about $0.07 per kw
>>hour (cdn) so I would have to llive a long while to pay for
>>the little hot one.
>>Thanks for the link. It never hurts to know what is on the
>>market.
>>
>>Bob
>
> Wow, nice electricity price. How much for the flat anual water fee?
>
Without going into the invoice pile, I recall that it is
$120 or $180 per year for a single dwelling. Enough for us
because we don't waste/use a lot of water, but for people
who want everything to be green ans clean (cars, driveways),
it is not enough.

Bob


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Posted by on July 23, 2005, 3:33 am


> Interesting little machine, but not economical for me

I was thinking the same about the 12-vdc blender. A outdoor-gear
company somewhere in WA state sells one which is hand-cranked.



Posted by Olaf on July 20, 2005, 10:42 pm



> This is my first visit to this group, so the question may be
> a repeat.
> I am thinking about installing a return pipe on my hot water
> feed to the kitchen to reduce the amount of cold water that
> is wasted before the hot water has reached the sink.
> Where is the best place to make the connection close to the
> hot water tank? It takes nearly four litres of cold water to
> run through the pipes before the hot water arrives. I have
> lots of pipe and connections left over from different
> projects and I might as well use them for this. My ceiling
> is easy to access. My problem is knowing where to connect
> near the tank.
> I have also read that some people have installed a "U" near
> the tank to reduce the loss of heat when hot water is not
> being drawn for use. Anyone have any details about this idea?
> Many thanks for your ideas.
>
> Bob




Posted by Olaf on July 20, 2005, 10:47 pm





> Where is the best place to make the connection close to the
> hot water tank?

That connection doesn't necessarily need to be hooked near the hot water
tank. A short run straight to the cold feed for the kitchen and a pump in
that run would work and could potentially be much easier to install. The
pump would move the 'stale' water from the hot water line through the cold
water line back to the heater. I believe there are kits with thermostat
controlled pumps even for this kind of hookup. Then the pump doesn't have to
run all the time.







Posted by on July 21, 2005, 4:10 am



>That connection doesn't necessarily need to be hooked near the hot water
>tank. A short run straight to the cold feed for the kitchen and a pump in
>that run would work and could potentially be much easier to install. The
>pump would move the 'stale' water from the hot water line through the cold
>water line back to the heater. I believe there are kits with thermostat
>controlled pumps even for this kind of hookup. Then the pump doesn't have to
>run all the time.

And one might add a motion detector near the point of use.

Nick




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