I know a comi can give between 9 - 14 litres per minute of hot water.

Does anybody know the flow rate of hot water from a standard 110 litre indirect copper cylinder.
If the cold water header tank is approx 2m above the cylider then is there 0.2bar pressure......
What would be the flow rate????

cheers

"pauliepie" wrote in message
news

I know a comi can give between 9 - 14
litres per minute of hot water.

It can give up to 22 litres/min, depending on which one you buy.

Does anybody know the flow rate of hot water
from a standard 110 litre indirect copper cylinder.

DEpenmding on the height of the tank above and the size of the cold feed
pipe. Apprix 25-30 litres/min on avaerge, but at a very low pressure.
Volume but no pressure.

If the cold water header tank is
approx 2m above the cylider then is
there 0.2bar pressure......
What would be the flow rate????

You will have to run around the shower to get wet. You can use a venturi
shower that takes it cold off the high pressure mains and hot from the low
pressure cylinder. Works well.

On Tue, 25 Jan 2005 22:55:21 -0000, "IMM" wrote:


"pauliepie" wrote in message
news

I know a comi can give between 9 - 14
litres per minute of hot water.

It can give up to 22 litres/min, depending on which one you buy.

Does anybody know the flow rate of hot water
from a standard 110 litre indirect copper cylinder.

DEpenmding on the height of the tank above and the size of the cold feed
pipe. Apprix 25-30 litres/min on avaerge, but at a very low pressure.
Volume but no pressure.

If the cold water header tank is
approx 2m above the cylider then is
there 0.2bar pressure......
What would be the flow rate????

You will have to run around the shower to get wet. You can use a venturi
shower that takes it cold off the high pressure mains and hot from the low
pressure cylinder. Works well.



But not as well as installing a good quality shower pump like a Stuart
Turner and getting good flow and pressure. At least 25lpm at two
showers concurrently.






--

..andy

To email, substitute .nospam with .gl

"Andy Hall" wrote in message
...
On Tue, 25 Jan 2005 22:55:21 -0000, "IMM" wrote:


"pauliepie" wrote in message
news

I know a comi can give between 9 - 14
litres per minute of hot water.

It can give up to 22 litres/min, depending on which one you buy.

Does anybody know the flow rate of hot water
from a standard 110 litre indirect copper cylinder.

DEpenmding on the height of the tank above and the size of the cold feed
pipe. Apprix 25-30 litres/min on avaerge, but at a very low pressure.
Volume but no pressure.

If the cold water header tank is
approx 2m above the cylider then is
there 0.2bar pressure......
What would be the flow rate????

You will have to run around the shower to get wet. You can use a venturi
shower that takes it cold off the high pressure mains and hot from the
low
pressure cylinder. Works well.

But not as well as installing a good quality shower pump like a Stuart
Turner and getting good flow and pressure. At least 25lpm at two
showers concurrently.

This is tripe information. Expensive, noisy, vibrates, wakes the house up,
uses too much water making you water bill large, empties the cylinder far
too quickly, souses more gas to heat all the wasted water, etc. Totally
silly idea. Intelligent people don't use them.


_________________________________________
Usenet Zone Free Binaries Usenet Server
More than 120,000 groups
Unlimited download
http://www.usenetzone.com to open account

On Wed, 26 Jan 2005 02:22:22 -0000, "IMM" wrote:


"Andy Hall" wrote in message
.. .

But not as well as installing a good quality shower pump like a Stuart
Turner and getting good flow and pressure. At least 25lpm at two
showers concurrently.

This is tripe information.

Expensive,

Depends on your definition of expensive. Yours seems to be anything
involving expenditure greater than 50p, and even that's marginal.

noisy, vibrates, wakes the house up,

Nope. As long as a good quality pump is used none of these points
apply.


uses too much water making you water bill large,

Nope. Even if you have metered water.

empties the cylinder far
too quickly,

The cylinder should have adequate size for the purpose, as should the
storage tank. It's a nonsense to make the shower performance poor to
meet the limitations of an inadequate system.


souses more gas to heat all the wasted water, etc.

Have you been watching fish cookery programs again? Different
newsgroup for that.

Totally
silly idea. Intelligent people don't use them.


I see that you have yet another new news account.........



_________________________________________
Usenet Zone Free Binaries Usenet Server
More than 120,000 groups
Unlimited download
http://www.usenetzone.com to open account


--

..andy

To email, substitute .nospam with .gl

"Andy Hall" wrote in message
...
On Wed, 26 Jan 2005 02:22:22 -0000, "IMM" wrote:


"Andy Hall" wrote in message
.. .

But not as well as installing a good quality shower pump like a Stuart
Turner and getting good flow and pressure. At least 25lpm at two
showers concurrently.

This is tripe information.

Expensive,

Depends on your definition of expensive.

Lot of money when cheaper better solutions are about.

noisy, vibrates, wakes the house up,

Nope.

Yep, they do.

As long as a good quality pump is used none of these points
apply.

Wrong.

uses too much water making you water bill large,

Nope.

Yep.

empties the cylinder far
too quickly,

The cylinder should have adequate
size for the purpose, as should the
storage tank. It's a nonsense to make
the shower performance poor to
meet the limitations of an inadequate system.

They use far too much water. Alos you are suppsoe to register a power
shower pump.

uses more gas to heat all the wasted water, etc.

Have

uses more gas to heat all the wasted water, etc.

Totally silly idea [power shower pumps].
Intelligent people don't use them.



_________________________________________
Usenet Zone Free Binaries Usenet Server
More than 120,000 groups
Unlimited download
http://www.usenetzone.com to open account

IMM wrote:
"pauliepie" wrote in message
news
If the cold water header tank is
approx 2m above the cylider then is there 0.2bar pressure......
What would be the flow rate????

You will have to run around the shower to get wet. You can use a
venturi shower that takes it cold off the high pressure mains and hot
from the low pressure cylinder. Works well.

Nonsense, I have less than 2m head and the shower pressure is fine. More
pressure = more fuel, more water, more likely to empty cylinder in time
for the next shower.

Biggles

"Biggles" wrote in message
...
IMM wrote:
"pauliepie" wrote in message
news
If the cold water header tank is
approx 2m above the cylider then is there 0.2bar pressure......
What would be the flow rate????

You will have to run around the shower to get wet. You can use a
venturi shower that takes it cold off the high pressure mains and hot
from the low pressure cylinder. Works well.

Nonsense, I have less than 2m head and the shower pressure is fine. More
pressure = more fuel, more water, more likely to empty cylinder in time
for the next shower.

If you like running around the shower to get wet then that's fine. Normal
people like about 1 bar minimum, which is like your tank 30 foot above the
shower head.




_________________________________________
Usenet Zone Free Binaries Usenet Server
More than 120,000 groups
Unlimited download
http://www.usenetzone.com to open account

On Tue, 25 Jan 2005 22:55:21 -0000, "IMM" wrote:


"pauliepie" wrote in message
news

I know a comi can give between 9 - 14
litres per minute of hot water.

It can give up to 22 litres/min, depending on which one you buy.

Does anybody know the flow rate of hot water
from a standard 110 litre indirect copper cylinder.

DEpenmding on the height of the tank above and the size of the cold feed
pipe. Apprix 25-30 litres/min on avaerge, but at a very low pressure.
Volume but no pressure.

If the cold water header tank is
approx 2m above the cylider then is
there 0.2bar pressure......
What would be the flow rate????

You will have to run around the shower to get wet. You can use a venturi
shower that takes it cold off the high pressure mains and hot from the low
pressure cylinder. Works well.

Although better than a gravity fed shower with a small head I found a
venturi shower dissapointing.

Mark

"Mark" wrote in message
...
On Tue, 25 Jan 2005 22:55:21 -0000, "IMM" wrote:


"pauliepie" wrote in message
news

I know a comi can give between 9 - 14
litres per minute of hot water.

It can give up to 22 litres/min, depending on which one you buy.

Does anybody know the flow rate of hot water
from a standard 110 litre indirect copper cylinder.

DEpenmding on the height of the tank above and the size of the cold feed
pipe. Apprix 25-30 litres/min on avaerge, but at a very low pressure.
Volume but no pressure.

If the cold water header tank is
approx 2m above the cylider then is
there 0.2bar pressure......
What would be the flow rate????

You will have to run around the shower to get wet. You can use a venturi
shower that takes it cold off the high pressure mains and hot from the
low
pressure cylinder. Works well.

Although better than a gravity fed shower with a small head I found a
venturi shower dissapointing.

What make?


_________________________________________
Usenet Zone Free Binaries Usenet Server
More than 120,000 groups
Unlimited download
http://www.usenetzone.com to open account

On Wed, 26 Jan 2005 12:49:35 -0000, "IMM" wrote:


"Mark" wrote in message
.. .
On Tue, 25 Jan 2005 22:55:21 -0000, "IMM" wrote:


"pauliepie" wrote in message
news
I know a comi can give between 9 - 14
litres per minute of hot water.

It can give up to 22 litres/min, depending on which one you buy.

Does anybody know the flow rate of hot water
from a standard 110 litre indirect copper cylinder.

DEpenmding on the height of the tank above and the size of the cold feed
pipe. Apprix 25-30 litres/min on avaerge, but at a very low pressure.
Volume but no pressure.

If the cold water header tank is
approx 2m above the cylider then is
there 0.2bar pressure......
What would be the flow rate????

You will have to run around the shower to get wet. You can use a venturi
shower that takes it cold off the high pressure mains and hot from the
low
pressure cylinder. Works well.

Although better than a gravity fed shower with a small head I found a
venturi shower dissapointing.

What make?

I think it was Aquaflow but I can't remember for sure.

Mark

"Mark" wrote in message
...
On Wed, 26 Jan 2005 12:49:35 -0000, "IMM" wrote:


"Mark" wrote in message
.. .
On Tue, 25 Jan 2005 22:55:21 -0000, "IMM" wrote:


"pauliepie" wrote in message
news
I know a comi can give between 9 - 14
litres per minute of hot water.

It can give up to 22 litres/min, depending on which one you buy.

Does anybody know the flow rate of hot water
from a standard 110 litre indirect copper cylinder.

DEpenmding on the height of the tank above and the size of the cold
feed
pipe. Apprix 25-30 litres/min on avaerge, but at a very low pressure.
Volume but no pressure.

If the cold water header tank is
approx 2m above the cylider then is
there 0.2bar pressure......
What would be the flow rate????

You will have to run around the shower to get wet. You can use a
venturi
shower that takes it cold off the high pressure mains and hot from the
low
pressure cylinder. Works well.

Although better than a gravity fed shower with a small head I found a
venturi shower dissapointing.

What make?

I think it was Aquaflow but I can't remember for sure.

Mark

I did a Google:

%%%%%%%%%%%%%%%
In article , "Hugh Goldring"
says:

Homebase have recently started selling
showers which operate on a venturi
principle. I think it is called a Hydro
shower by Croydex. The cold water
supply is mains pressure and the hot
water is gravity fed. Apparently the
flow of mains pressure water passed
a venturi sucks hot water into the flow
and mixes it. I cant find any information
on these devices. Does anyone have any
experience of these showers?

We have a shower that is marketed under
the tradename "Aquadart" which
works on the same prinicple. In our last
house we had a pumped power shower
and I'd say that the Aquaflow is just as good.

Hope that helps - Dave.
%%%%%%%%%%%%%

I installed a Trevi Boost shower about 5 years ago and Ive been very pleased
with it, plenty of pressure in my set up, which incidentally is in a hard
water area. The valves are ceramic so supposedly maintenance free and self
cleaning.

No attention needed so far.

It is very dependant on your mains water pressure though, I would get your
pressure measured and compare it to the spec's available from Trevi before
fitting, also the hot water needs to be really hot because the shower works
best turned full on and therefore needs v hot water to raise the mains cold
water temp/pressure.

JBH
%%%%%%%%%%%%

Further to a request some 10 days ago to do performance tests on my
'Aquadart' venturi shower, here are the results:

Inlet water temperatures: hot = 55 degC cold = 8 degC

Flow rates and shower water temperatures:

Control knob wound to fully cold: 10 litres/min at 8 degC
Control knob wound to fully hot: 8 litres/min at 43 degC

I found that a reasonably hot, just bearable (personal choice?) shower is
with an outlet water temperature of about 40 degC. I didn't bother to
measure the flowrate at this temeperature since it will obviously be between
8 and 10 litres/min.

A quick calculation on the mixing rates suggests that at max outlet
temperature of 43 degC the hot water flow rate is about 6 litres/min with
about 2 litres/min cold flow rate.

Hope that helps - Dave.
%%%%%%%%%%




_________________________________________
Usenet Zone Free Binaries Usenet Server
More than 120,000 groups
Unlimited download
http://www.usenetzone.com to open account

"IMM" wrote in message
...

"pauliepie" wrote in message
news

I know a comi can give between 9 - 14
litres per minute of hot water.

It can give up to 22 litres/min, depending on which one you buy.

Does anybody know the flow rate of hot water
from a standard 110 litre indirect copper cylinder.

DEpenmding on the height of the tank above and the size of the cold feed
pipe. Apprix 25-30 litres/min on avaerge, but at a very low pressure.
Volume but no pressure.

If the cold water header tank is
approx 2m above the cylider then is
there 0.2bar pressure......
What would be the flow rate????

You will have to run around the shower to get wet. You can use a venturi
shower that takes it cold off the high pressure mains and hot from the low
pressure cylinder. Works well.

If replacing a cylinder, you may want to replace it with a shower coil
cylinder. This has a coiler in the top of the cylinder that only the
showers hot supply, fed from the mains, is run though. They prefer to be
hotter than the average to operate effectively, so have the water in the
cylinder at 70-80C and have a blending valve on hot the Draw-off to give
cooler water at the other taps. Then mains high pressure showers and no
silly pumps. Highly effective and simple and reliable, as no moving parts,
except the shower mixer valve, which all showers have, and blending valve,
which may become standard soon anyway.

See http://www.gledhill.net For shower coil cylinder. Other companies make
these too.



_________________________________________
Usenet Zone Free Binaries Usenet Server
More than 120,000 groups
Unlimited download
http://www.usenetzone.com to open account

the important factor is the head of water above say a shower spray head,to
give good pressure the outlet from the header tank needs to be minium of one
metre above the shower head.

At my last property raised tank to give 1.5m best shower I ever had

"Alex" wrote in message
...
the important factor is the head of water above say a shower spray head,to
give good pressure the outlet from the header tank needs to be minium of
one
metre above the shower head.

At my last property raised tank to give 1.5m best shower I ever had

You haven't had many showers then!


_________________________________________
Usenet Zone Free Binaries Usenet Server
More than 120,000 groups
Unlimited download
http://www.usenetzone.com to open account

pauliepie wrote in
news
I know a comi can give between 9 - 14 litres per minute of hot water.

Does anybody know the flow rate of hot water from a standard 110 litre
indirect copper cylinder.
If the cold water header tank is approx 2m above the cylider then is
there 0.2bar pressure......
What would be the flow rate????

cheers

You need to think about the head above the shower head, not the HW
cylinder, your 2m may come down to one or even less.

In that case the answer is "not enough".

I use a pumped electric shower off the cold water tank (pump built in to
the shower) - this will bring down loads of scorn, but it works for me.

Instant shower, loads of flow except when it's really cold out, does not
interact with any other water use in the hovel.

Con; it's noisy, but not noticeably outtside the bathroom.

Other solutions have been proposed, some, like good quality external double
ended shower pump I think are better, but *much* dearer, and you need a
tank of hot water - mine will go unconditionally at 15 seconds notice!

Any road up, I doubt if you'll get a good shower with that head

mike