Hi all,

We have an Aga with back boiler in kitchen which is connected to a direct HW
cylinder on the first floor. It works via thermosyphon and has done for
years.

It is apt to kettling the cylinder at times, usually during the night when
the lids are shut. We always have an excess of very hot water when the aga
is running at cooking temperature.

Adjacent to the kitchen & behind the Aga, we have an un-heated utility. Is
there any way that a small radiator could be plumbed into the thermosyphon
pipes so as to both heat the utility somewhat, and also provide abit of a
heatsink to the aga to prevent it kettling the cylinder???

TIA Tim.

On Mon, 06 Jul 2009 17:11:26 +0100, Tim.. wrote:

Hi all,

We have an Aga with back boiler in kitchen which is connected to a direct HW
cylinder on the first floor. It works via thermosyphon and has done for
years.

It is apt to kettling the cylinder at times, usually during the night when
the lids are shut. We always have an excess of very hot water when the aga
is running at cooking temperature.

Adjacent to the kitchen & behind the Aga, we have an un-heated utility. Is
there any way that a small radiator could be plumbed into the thermosyphon
pipes so as to both heat the utility somewhat, and also provide abit of a
heatsink to the aga to prevent it kettling the cylinder???

If the proposed heatsink (aka heat dump) rad is on the same level as the
Aga it would probably have to be pumped to be effective. My mum's
(solid-fuel-converted-to-gas) Aga boils its cylinder quite regularly. I've
been thinking of (a) putting a TMV on the outlet so it doesn't strip your
flesh from the bone when you inadvertently wash under it when it's hot (b)
converting it to a thermal store (c) getting Doctor Drivel involved in
yet another discussion degenerating into a "you're a plant-pot" slanging
match with Dave P (Andy Hall having sadly popped his clogs) :-/


--
John Stumbles

Hypnotising Hypnotists Can Be Tricky

"John Stumbles" wrote in message
...
On Mon, 06 Jul 2009 17:11:26 +0100, Tim.. wrote:

Hi all,

We have an Aga with back boiler in kitchen which is connected to a direct
HW
cylinder on the first floor. It works via thermosyphon and has done for
years.

It is apt to kettling the cylinder at times, usually during the night
when
the lids are shut. We always have an excess of very hot water when the
aga
is running at cooking temperature.

Adjacent to the kitchen & behind the Aga, we have an un-heated utility.
Is
there any way that a small radiator could be plumbed into the
thermosyphon
pipes so as to both heat the utility somewhat, and also provide abit of a
heatsink to the aga to prevent it kettling the cylinder???

If the proposed heatsink (aka heat dump) rad is on the same level as the
Aga it would probably have to be pumped to be effective. My mum's
(solid-fuel-converted-to-gas) Aga boils its cylinder quite regularly. I've
been thinking of (a) putting a TMV on the outlet so it doesn't strip your
flesh from the bone when you inadvertently wash under it when it's hot
(b)
converting it to a thermal store (c) getting Doctor Drivel involved in
yet another discussion degenerating into a "you're a plant-pot" slanging
match with Dave P (Andy Hall having sadly popped his clogs) :-/



Yes the rad would be ~at the same level as the aga, and i wondered if it
would need to be pumped via a thermostat or timer...

TIA Tim.

John Stumbles wrote:
On Mon, 06 Jul 2009 17:11:26 +0100, Tim.. wrote:

Hi all,

We have an Aga with back boiler in kitchen which is connected to a direct HW
cylinder on the first floor. It works via thermosyphon and has done for
years.

It is apt to kettling the cylinder at times, usually during the night when
the lids are shut. We always have an excess of very hot water when the aga
is running at cooking temperature.

Adjacent to the kitchen & behind the Aga, we have an un-heated utility. Is
there any way that a small radiator could be plumbed into the thermosyphon
pipes so as to both heat the utility somewhat, and also provide abit of a
heatsink to the aga to prevent it kettling the cylinder???

If the proposed heatsink (aka heat dump) rad is on the same level as the
Aga it would probably have to be pumped to be effective. My mum's
(solid-fuel-converted-to-gas) Aga boils its cylinder quite regularly. I've
been thinking of (a) putting a TMV on the outlet so it doesn't strip your
flesh from the bone when you inadvertently wash under it when it's hot (b)
converting it to a thermal store (c) getting Doctor Drivel involved in
yet another discussion degenerating into a "you're a plant-pot" slanging
match with Dave P (Andy Hall having sadly popped his clogs) :-/


I think that as long as the pipe bore is fairly large, and the main
circuit has height, you can pop another rad *in the same circuit* and it
will take flow.
..

The Natural Philosopher wrote:
John Stumbles wrote:
On Mon, 06 Jul 2009 17:11:26 +0100, Tim.. wrote:

Hi all,

We have an Aga with back boiler in kitchen which is connected to a
direct HW cylinder on the first floor. It works via thermosyphon
and has done for years.

It is apt to kettling the cylinder at times, usually during the
night when the lids are shut. We always have an excess of very hot
water when the aga is running at cooking temperature.

Adjacent to the kitchen & behind the Aga, we have an un-heated
utility. Is there any way that a small radiator could be plumbed
into the thermosyphon pipes so as to both heat the utility
somewhat, and also provide abit of a heatsink to the aga to prevent
it kettling the cylinder???

If the proposed heatsink (aka heat dump) rad is on the same level as
the Aga it would probably have to be pumped to be effective. My mum's
(solid-fuel-converted-to-gas) Aga boils its cylinder quite
regularly. I've been thinking of (a) putting a TMV on the outlet so
it doesn't strip your flesh from the bone when you inadvertently
wash under it when it's hot (b) converting it to a thermal store (c)
getting Doctor Drivel involved in yet another discussion degenerating
into a "you're a plant-pot"
slanging match with Dave P (Andy Hall having sadly popped his clogs)
:-/
I think that as long as the pipe bore is fairly large, and the main
circuit has height, you can pop another rad *in the same circuit* and
it will take flow.

Might it help to use a tall radiator with feed at the bottom & return taken
off the top?

Tim

"John Stumbles" wrote in message
...
On Mon, 06 Jul 2009 17:11:26 +0100, Tim.. wrote:

Hi all,

We have an Aga with back boiler in kitchen which is connected to a direct
HW
cylinder on the first floor. It works via thermosyphon and has done for
years.

It is apt to kettling the cylinder at times, usually during the night
when
the lids are shut. We always have an excess of very hot water when the
aga
is running at cooking temperature.

Adjacent to the kitchen & behind the Aga, we have an un-heated utility.
Is
there any way that a small radiator could be plumbed into the
thermosyphon
pipes so as to both heat the utility somewhat, and also provide abit of a
heatsink to the aga to prevent it kettling the cylinder???

If the proposed heatsink (aka heat dump) rad is on the same level as the
Aga it would probably have to be pumped to be effective. My mum's
(solid-fuel-converted-to-gas) Aga boils its cylinder quite regularly. I've
been thinking of (a) putting a TMV on the outlet so it doesn't strip your
flesh from the bone when you inadvertently wash under it when it's hot
(b)
converting it to a thermal store (c) getting Doctor Drivel involved in
yet another discussion degenerating into a "you're a plant-pot" slanging
match with Dave P (Andy Hall having sadly popped his clogs) :-/

I do not converse with plantpots. That is clear. I remind them of their
condition. I never called Andy a plantpot - everything else but not a
plantpot

A heat bank is probably the way. The gravity flow pipe from the Aga to the
top of the cylinder, so the heat is fed right into the plate heat exchanger
when DHW is called. Also if there is a boiler that can be used to heat the
store too. A high limit stat set to say 95C can operate the DHW pump which
acts a shunt pump, pumping hotter water at the top to the bottom of the
cylinder to the cooler bottom. There are devices that mechanically operate
and allow cold mains water to extract heat from the store and go to a drain.
Simple to do. It can also do the CH as well.