Over the winter we run the CH between 18C and 20C depending on how frugal
and wimpish we are feeling.

Temperature in the main living room is currently 17.6C and 18C in the hall
where the thermostat sits.

So in theory we have reached the point of heating to maintain minimum
temperature - in August!

I'm now wondering if the decision to turn on the heating is governed more
by the number of daylight hours and the perceived temperature (August and
sunny) instead of the real temperature.

Or is it the maximum temperature during the day?

Although maximum outside temperature today is predicted as 17C.

I think some people run the CH at the same level all year - we put it on
minimum (frost protect) when the weather warms up and then back to normal
in the Autumn.

All in all, it has been an unusual year for weather.

Just looking for average August temperatures and note that the warmest day
of the year in 2012 was the weekend before 21st August - 32.4C recorded at
Cavendish, Suffolk.

Cheers


Dave R



--
Windows 8.1 on PCSpecialist box

On 23/08/2014 08:33, David wrote:
I'm now wondering if the decision to turn on the heating is governed more
by the number of daylight hours and the perceived temperature (August and
sunny) instead of the real temperature.

Good question.

We tend to have temperature lower than most - somewhere around 17 is
quite common, but sometimes lower, especially if active.

The megafactor you don't mention is humidity. We tend to be far more
ready to switch on (e.g. a one hour boost) when it is moist sticky air.
Even when we basically feel warm enough- it is the drying effect we crave.

As someone who lives with thyroid issues, it is well known that many
people seem to go through a change at about this time of year where they
need to increase their dose - either throughout the winter or just a few
days of taking something like 12.5 or 25 mcg extra, or both. Often with
a reversal sometime in the spring. I'd guess that those without thyroid
issues simply adjust their own thyroid hormone production without
noticing it - but that will reflect back into "need" for heating.

--
Rod

In article ,
David writes:
Over the winter we run the CH between 18C and 20C depending on how frugal
and wimpish we are feeling.

Temperature in the main living room is currently 17.6C and 18C in the hall
where the thermostat sits.

So in theory we have reached the point of heating to maintain minimum
temperature - in August!

I'm now wondering if the decision to turn on the heating is governed more
by the number of daylight hours and the perceived temperature (August and
sunny) instead of the real temperature.

Or is it the maximum temperature during the day?

Although maximum outside temperature today is predicted as 17C.

I think some people run the CH at the same level all year - we put it on
minimum (frost protect) when the weather warms up and then back to normal
in the Autumn.

All in all, it has been an unusual year for weather.

Just looking for average August temperatures and note that the warmest day
of the year in 2012 was the weekend before 21st August - 32.4C recorded at
Cavendish, Suffolk.

For me:

3 Oct 2009 (av. outside temperature here was 14.0C)

16 Sep 2010 (av. outside temperature here was 14.7C)

19 Sep 2011 (av. outside temperature here was 13.3C)

19 Sep 2012 (av. outside temperature here was 12.1C)

9 Sep 2013 for 20 mins only (av. outside temperature here was 9.0C)
15 Sep 2013 for 90 mins only (av. outside temperature here was 9.0C)
2 Oct 2013 (switched on remotely on way home from several days away)

However, I have arranged that the heat from my 'always on' PC goes
into the main room, so I get some background heating from that, which
probably delays the turn-on of the heating. I also have an air-sourced
heat pump which is used to heat just that room sometimes, and again
probably defers the switch-on of the heating for the whole house.

I did turn the heating on for last weekend when my parents came over,
as they are used to a much warmer house, but the stat didn't quite
need to call for heat.

My parents never turn their heating off, and it does fire up quite a
bit even during the summer. You may recall a few weeks ago that
British Gas anounced a profits warning. Well I should have known from
that, but a few hours later, I get a call from parents saying their
boiler has stopped working! (Mid-position valve had started leaking
and caused the boiler fuse to blow, resulting in a distress purchase
of a new one from B&Q.)

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]

I leave mine on all year and rely on the room stat. It has come on on a few
occassions when I have had the doors open and I have manually turned down
the digistat.
I believe it does it good to run fairly frequently - mine does default to a
5 min run every morning at 10:00 to exercise the pump.
However, I suppose it does not fully circulate the water as my carefully
set TRVs will probably be closed.

On 23/08/14 08:33, David wrote:
Over the winter we run the CH between 18C and 20C depending on how frugal
and wimpish we are feeling.

Temperature in the main living room is currently 17.6C and 18C in the hall
where the thermostat sits.

So in theory we have reached the point of heating to maintain minimum
temperature - in August!

Its globvbal warming.

I dont switch it off. The thermostat does that

I'm now wondering if the decision to turn on the heating is governed more
by the number of daylight hours and the perceived temperature (August and
sunny) instead of the real temperature.

Or is it the maximum temperature during the day?

Although maximum outside temperature today is predicted as 17C.

I think some people run the CH at the same level all year - we put it on
minimum (frost protect) when the weather warms up and then back to normal
in the Autumn.

All in all, it has been an unusual year for weather.

Just looking for average August temperatures and note that the warmest day
of the year in 2012 was the weekend before 21st August - 32.4C recorded at
Cavendish, Suffolk.

Cheers


Dave R





--
Everything you read in newspapers is absolutely true, except for the
rare story of which you happen to have first-hand knowledge. €“ Erwin Knoll

On 23/08/2014 08:33, David wrote:
Over the winter we run the CH between 18C and 20C depending on how frugal
and wimpish we are feeling.

Temperature in the main living room is currently 17.6C and 18C in the hall
where the thermostat sits.

So in theory we have reached the point of heating to maintain minimum
temperature - in August!

I'm now wondering if the decision to turn on the heating is governed more
by the number of daylight hours and the perceived temperature (August and
sunny) instead of the real temperature.

Or is it the maximum temperature during the day?

Have frequently wondered this myself as sitting watching TV at 18C in
summer seems fine but in winter seems too cold. I suspect that its
something to do with the "heat soak" in the walls - in winter heating is
not on full time so when air temp is up to 18 the walls are still
considerably colder. This results in cold convection currents being set
up and the walls acting as a heat sink to any "hot body" in the room.

In summer a sudden drop in temp like we have recently had doesn't seem
so bad since the walls still retain heat - according to my IR device
they are still at 20 deg right now.


Although maximum outside temperature today is predicted as 17C.

I think some people run the CH at the same level all year - we put it on
minimum (frost protect) when the weather warms up and then back to normal
in the Autumn.

All in all, it has been an unusual year for weather.

Just looking for average August temperatures and note that the warmest day
of the year in 2012 was the weekend before 21st August - 32.4C recorded at
Cavendish, Suffolk.

Cheers


Dave R





--
Chris

On 23 Aug 2014 07:33:12 GMT, David wrote:

I think some people run the CH at the same level all year -

We do, 18.5 during the day, but then this place isn't a moderm
insulated box that heats up from 10 C to 20C in half an hour with the
waste heat from the occupants. B-)

This is a thick solid stone place with thermal inertia measured in
days, it's not good to let the place cool down. Recent overnight lows
have been only just been above 5 C. We haven't had a ground frost,
yet.

--
Cheers
Dave.

In message , David
writes

So in theory we have reached the point of heating to maintain minimum
temperature - in August!

July is normally the only month we do not run the heating. July this
year was glorious, but, here in Aberdeenshire, there is always an
autumnal feel in the air, from August. Temp outside was 8 this morning.
A few days ago it was 4 degrees outside, at about 06.30. Daytime temps
have been fairly static at around 12 degrees, so, yes, we put the
heating on, at least when we sit down later in the day.

Having said that, a big factor here is the wind. A calm day at 12
degrees feels a lot warmer than a windy day at 15.
--
Graeme

On 23/08/14 09:59, news wrote:
Have frequently wondered this myself as sitting watching TV at 18C in
summer seems fine but in winter seems too cold.

Humidity.

summer humidity limits heat loss by evaporation.

In winter with heating on, the indoor RH is much lower


--
Everything you read in newspapers is absolutely true, except for the
rare story of which you happen to have first-hand knowledge. €“ Erwin Knoll

On 23/08/2014 10:23, News wrote:
In message , David
writes

So in theory we have reached the point of heating to maintain minimum
temperature - in August!

July is normally the only month we do not run the heating. July this
year was glorious, but, here in Aberdeenshire, there is always an
autumnal feel in the air, from August. Temp outside was 8 this morning.
A few days ago it was 4 degrees outside, at about 06.30. Daytime temps
have been fairly static at around 12 degrees, so, yes, we put the
heating on, at least when we sit down later in the day.

Having said that, a big factor here is the wind. A calm day at 12
degrees feels a lot warmer than a windy day at 15.
Am I the only person in the country who never turns the central heating
off at the boiler?

I leave the thermostat set for a comfy temperature and it does the job
for me, and costs me no more to run than it would if I were running to
turn the heating beck on every time it gets a bit cool.

Now I live without central heating, it's a bit more fiddly, but I can
reach the heater switch without getting out of bed....

--
Tciao for Now!

John.

On Sat, 23 Aug 2014 11:17:50 +0100, John Williamson wrote:

On 23/08/2014 10:23, News wrote:
In message , David
writes

So in theory we have reached the point of heating to maintain minimum
temperature - in August!

July is normally the only month we do not run the heating. July this
year was glorious, but, here in Aberdeenshire, there is always an
autumnal feel in the air, from August. Temp outside was 8 this
morning.
A few days ago it was 4 degrees outside, at about 06.30. Daytime temps
have been fairly static at around 12 degrees, so, yes, we put the
heating on, at least when we sit down later in the day.

Having said that, a big factor here is the wind. A calm day at 12
degrees feels a lot warmer than a windy day at 15.
Am I the only person in the country who never turns the central heating
off at the boiler?

No, I do the same.

--
My posts are my copyright and if @diy_forums or Home Owners' Hub
wish to copy them they can pay me £30a message.
Use the BIG mirror service in the UK: http://www.mirrorservice.org
*lightning surge protection* - a w_tom conductor

On 23/08/2014 08:33, David wrote:
Over the winter we run the CH between 18C and 20C depending on how frugal
and wimpish we are feeling.

Temperature in the main living room is currently 17.6C and 18C in the hall
where the thermostat sits.

So in theory we have reached the point of heating to maintain minimum
temperature - in August!

I'm now wondering if the decision to turn on the heating is governed more
by the number of daylight hours and the perceived temperature (August and
sunny) instead of the real temperature.

Or is it the maximum temperature during the day?...

The bedroom heater goes on when my nose feels cold at night. In the rest
of the house, I use heaters when a couple of pullovers is not enough.



--
Colin Bignell

In message , Andrew Gabriel
writes
For me:

3 Oct 2009 (av. outside temperature here was 14.0C)

16 Sep 2010 (av. outside temperature here was 14.7C)

19 Sep 2011 (av. outside temperature here was 13.3C)

19 Sep 2012 (av. outside temperature here was 12.1C)

9 Sep 2013 for 20 mins only (av. outside temperature here was 9.0C)
15 Sep 2013 for 90 mins only (av. outside temperature here was 9.0C)
2 Oct 2013 (switched on remotely on way home from several days away)
So global cooling rules OK?
--
bert

On 23/08/14 11:29, Bob Eager wrote:
On Sat, 23 Aug 2014 11:17:50 +0100, John Williamson wrote:

On 23/08/2014 10:23, News wrote:
In message , David
writes

So in theory we have reached the point of heating to maintain minimum
temperature - in August!

July is normally the only month we do not run the heating. July this
year was glorious, but, here in Aberdeenshire, there is always an
autumnal feel in the air, from August. Temp outside was 8 this
morning.
A few days ago it was 4 degrees outside, at about 06.30. Daytime temps
have been fairly static at around 12 degrees, so, yes, we put the
heating on, at least when we sit down later in the day.

Having said that, a big factor here is the wind. A calm day at 12
degrees feels a lot warmer than a windy day at 15.
Am I the only person in the country who never turns the central heating
off at the boiler?

No, I do the same.

well I have so many ways to turn it off..but te boiler does teh hot
water too, so that stays on. I could cancel the CH circuits - and
indeed I do upstairs - but downstairs the thremostat is set very low anyway.

The aga keeps the kitchen warm. The computers keep the office warm.
theres a wood burner in teh bedroom and a lot of wood from removing a
mature maple..

And two open fires in the living/dining rooms..



--
Everything you read in newspapers is absolutely true, except for the
rare story of which you happen to have first-hand knowledge. €“ Erwin Knoll

On 23/08/14 12:12, Tim Streater wrote:
In article , The Natural Philosopher
wrote:

On 23/08/14 11:29, Bob Eager wrote:
On Sat, 23 Aug 2014 11:17:50 +0100, John Williamson wrote:

On 23/08/2014 10:23, News wrote:
In message , David
writes

So in theory we have reached the point of heating to maintain
minimum
temperature - in August!

July is normally the only month we do not run the heating. July this
year was glorious, but, here in Aberdeenshire, there is always an
autumnal feel in the air, from August. Temp outside was 8 this
morning.
A few days ago it was 4 degrees outside, at about 06.30. Daytime
temps
have been fairly static at around 12 degrees, so, yes, we put the
heating on, at least when we sit down later in the day.

Having said that, a big factor here is the wind. A calm day at 12
degrees feels a lot warmer than a windy day at 15.
Am I the only person in the country who never turns the central
heating
off at the boiler?

No, I do the same.

well I have so many ways to turn it off..but te boiler does teh hot
water too, so that stays on. I could cancel the CH circuits - and
indeed I do upstairs - but downstairs the thremostat is set very low
anyway.

The aga keeps the kitchen warm. The computers keep the office warm.
theres a wood burner in teh bedroom and a lot of wood from removing a
mature maple..

And two open fires in the living/dining rooms..

Do those actually do anything? One we had here (since replaced by a
wood burner) just shoved the heat up the chimney. I got hotter from
standing there throwing wood on, like a stoker in a WW1 coal-fired
warship, than from the fire itself.

Oh yes. peak output about 15Kw..

Fully capable of heating 30 square meters of room


--
Everything you read in newspapers is absolutely true, except for the
rare story of which you happen to have first-hand knowledge. €“ Erwin Knoll

On 23/08/2014 12:28, The Natural Philosopher wrote:
On 23/08/14 12:12, Tim Streater wrote:
In article , The Natural Philosopher
wrote:

On 23/08/14 11:29, Bob Eager wrote:
On Sat, 23 Aug 2014 11:17:50 +0100, John Williamson wrote:

On 23/08/2014 10:23, News wrote:
In message , David
writes

So in theory we have reached the point of heating to maintain
minimum
temperature - in August!

July is normally the only month we do not run the heating. July
this
year was glorious, but, here in Aberdeenshire, there is always an
autumnal feel in the air, from August. Temp outside was 8 this
morning.
A few days ago it was 4 degrees outside, at about 06.30. Daytime
temps
have been fairly static at around 12 degrees, so, yes, we put the
heating on, at least when we sit down later in the day.

Having said that, a big factor here is the wind. A calm day at 12
degrees feels a lot warmer than a windy day at 15.
Am I the only person in the country who never turns the central
heating
off at the boiler?

No, I do the same.

well I have so many ways to turn it off..but te boiler does teh hot
water too, so that stays on. I could cancel the CH circuits - and
indeed I do upstairs - but downstairs the thremostat is set very low
anyway.

The aga keeps the kitchen warm. The computers keep the office warm.
theres a wood burner in teh bedroom and a lot of wood from removing a
mature maple..

And two open fires in the living/dining rooms..

Do those actually do anything? One we had here (since replaced by a
wood burner) just shoved the heat up the chimney. I got hotter from
standing there throwing wood on, like a stoker in a WW1 coal-fired
warship, than from the fire itself.

Oh yes. peak output about 15Kw..


Peak up-put?

On 23/08/14 13:29, Huge wrote:
On 2014-08-23, The Natural Philosopher wrote:
On 23/08/14 12:12, Tim Streater wrote:
In article , The Natural Philosopher
wrote:

[37 lines snipped]

And two open fires in the living/dining rooms..

Do those actually do anything? One we had here (since replaced by a
wood burner) just shoved the heat up the chimney. I got hotter from
standing there throwing wood on, like a stoker in a WW1 coal-fired
warship, than from the fire itself.

Oh yes. peak output about 15Kw..

Hmmm. I reckon our open fireplace (in the living room) actually cools
the room down. (It's only for entertainment - we have oil central
heating.)

well with underfloor vents there are no in room draughts.

At flat out chuff I can pull the room up a degree and a smidgeon an hour.

There is a huge amount of masonry in the central chimney shared between
two rooms so it stays warm all night if the fires have been on..



--
Everything you read in newspapers is absolutely true, except for the
rare story of which you happen to have first-hand knowledge. €“ Erwin Knoll

David wrote:
Over the winter we run the CH between 18C and 20C depending on how frugal
and wimpish we are feeling.

Think I'm in a minority, 25C winter, 24C summer!

David pretended :
Over the winter we run the CH between 18C and 20C depending on how frugal
and wimpish we are feeling.

Temperature in the main living room is currently 17.6C and 18C in the hall
where the thermostat sits.

So in theory we have reached the point of heating to maintain minimum
temperature - in August!

Our temperatures, wind speed, rain etc. are all continuously recorded.

From an indoor peak yesterday evening of 21.2 at midnight, it gradually
fell to 19.4C by 09:30 this morning, the lowest point of the day so
far. From 19.4C it gradually increased to 20.4C, with a great deal of
people going in and out the doors to the back garden.

We have had no heating on since around April / May. The only heat we
have had in the house is waste heat from cooking, TV's and PC's. For
several weeks until recently, we had numerous windows open.

SWMBO is a bit of a softy and is by far the first to complain when she
is cold, but I doubt we will need any heating on for several weeks yet.
When we do, she will insist on 22C and I will have to turn radiators
off in the rooms I am in until it really gets cold.

--
Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk

On 23/08/2014 15:56, Capitol wrote:
David wrote:
Over the winter we run the CH between 18C and 20C depending on how frugal
and wimpish we are feeling.

Think I'm in a minority, 25C winter, 24C summer!

Do you need a new thermostat? Or is that the real room temperature?

--
Rod

polygonum wrote:
On 23/08/2014 15:56, Capitol wrote:
David wrote:
Over the winter we run the CH between 18C and 20C depending on how
frugal
and wimpish we are feeling.

Think I'm in a minority, 25C winter, 24C summer!

Do you need a new thermostat? Or is that the real room temperature?


I'm designed for a warm climate. That's the real temperature.

On 23/08/2014 13:48, The Natural Philosopher wrote:
On 23/08/14 13:29, Huge wrote:
On 2014-08-23, The Natural Philosopher wrote:
On 23/08/14 12:12, Tim Streater wrote:
In article , The Natural Philosopher
wrote:

[37 lines snipped]

And two open fires in the living/dining rooms..

Do those actually do anything? One we had here (since replaced by a
wood burner) just shoved the heat up the chimney. I got hotter from
standing there throwing wood on, like a stoker in a WW1 coal-fired
warship, than from the fire itself.

Oh yes. peak output about 15Kw..

Hmmm. I reckon our open fireplace (in the living room) actually cools
the room down. (It's only for entertainment - we have oil central
heating.)

well with underfloor vents there are no in room draughts.

At flat out chuff I can pull the room up a degree and a smidgeon an hour.

You need better control of ventilation and more insulation.
Was your heating done by harry to NHS standards?

I can pull my conservatory up by 20 degrees in about 10 minutes using 1600W.

On 23/08/14 19:01, Dennis@home wrote:
On 23/08/2014 13:48, The Natural Philosopher wrote:
On 23/08/14 13:29, Huge wrote:
On 2014-08-23, The Natural Philosopher wrote:
On 23/08/14 12:12, Tim Streater wrote:
In article , The Natural Philosopher
wrote:

[37 lines snipped]

And two open fires in the living/dining rooms..

Do those actually do anything? One we had here (since replaced by a
wood burner) just shoved the heat up the chimney. I got hotter from
standing there throwing wood on, like a stoker in a WW1 coal-fired
warship, than from the fire itself.

Oh yes. peak output about 15Kw..

Hmmm. I reckon our open fireplace (in the living room) actually cools
the room down. (It's only for entertainment - we have oil central
heating.)

well with underfloor vents there are no in room draughts.

At flat out chuff I can pull the room up a degree and a smidgeon an
hour.

You need better control of ventilation and more insulation.

NO I dint. Its all up to modern specs

Abd pribabkyt kess ventilation than modern regs

Was your heating done by harry to NHS standards?

I can pull my conservatory up by 20 degrees in about 10 minutes using
1600W.

Is it 30 square meters?


--
Everything you read in newspapers is absolutely true, except for the
rare story of which you happen to have first-hand knowledge. €“ Erwin Knoll

On 23/08/2014 23:08, The Natural Philosopher wrote:
On 23/08/14 19:01, Dennis@home wrote:
On 23/08/2014 13:48, The Natural Philosopher wrote:
On 23/08/14 13:29, Huge wrote:
On 2014-08-23, The Natural Philosopher wrote:
On 23/08/14 12:12, Tim Streater wrote:
In article , The Natural Philosopher
wrote:

[37 lines snipped]

And two open fires in the living/dining rooms..

Do those actually do anything? One we had here (since replaced by a
wood burner) just shoved the heat up the chimney. I got hotter from
standing there throwing wood on, like a stoker in a WW1 coal-fired
warship, than from the fire itself.

Oh yes. peak output about 15Kw..

Hmmm. I reckon our open fireplace (in the living room) actually cools
the room down. (It's only for entertainment - we have oil central
heating.)

well with underfloor vents there are no in room draughts.

At flat out chuff I can pull the room up a degree and a smidgeon an
hour.

You need better control of ventilation and more insulation.

NO I dint. Its all up to modern specs

Abd pribabkyt kess ventilation than modern regs

Was your heating done by harry to NHS standards?

I can pull my conservatory up by 20 degrees in about 10 minutes using
1600W.

Is it 30 square meters?



Only 15.

On 23/08/14 23:38, Dennis@home wrote:
On 23/08/2014 23:08, The Natural Philosopher wrote:
On 23/08/14 19:01, Dennis@home wrote:
On 23/08/2014 13:48, The Natural Philosopher wrote:
On 23/08/14 13:29, Huge wrote:
On 2014-08-23, The Natural Philosopher wrote:
On 23/08/14 12:12, Tim Streater wrote:
In article , The Natural Philosopher
wrote:

[37 lines snipped]

And two open fires in the living/dining rooms..

Do those actually do anything? One we had here (since replaced by a
wood burner) just shoved the heat up the chimney. I got hotter from
standing there throwing wood on, like a stoker in a WW1 coal-fired
warship, than from the fire itself.

Oh yes. peak output about 15Kw..

Hmmm. I reckon our open fireplace (in the living room) actually cools
the room down. (It's only for entertainment - we have oil central
heating.)

well with underfloor vents there are no in room draughts.

At flat out chuff I can pull the room up a degree and a smidgeon an
hour.

You need better control of ventilation and more insulation.

NO I dint. Its all up to modern specs

Abd pribabkyt kess ventilation than modern regs

Was your heating done by harry to NHS standards?

I can pull my conservatory up by 20 degrees in about 10 minutes using
1600W.

Is it 30 square meters?



Only 15.

does it contain 55 tones of cast screed floor and chimney inside the
insulation?


--
Everything you read in newspapers is absolutely true, except for the
rare story of which you happen to have first-hand knowledge. €“ Erwin Knoll

On 23/08/2014 23:40, The Natural Philosopher wrote:
On 23/08/14 23:38, Dennis@home wrote:
On 23/08/2014 23:08, The Natural Philosopher wrote:
On 23/08/14 19:01, Dennis@home wrote:
On 23/08/2014 13:48, The Natural Philosopher wrote:
On 23/08/14 13:29, Huge wrote:
On 2014-08-23, The Natural Philosopher wrote:
On 23/08/14 12:12, Tim Streater wrote:
In article , The Natural
Philosopher
wrote:

[37 lines snipped]

And two open fires in the living/dining rooms..

Do those actually do anything? One we had here (since replaced by a
wood burner) just shoved the heat up the chimney. I got hotter from
standing there throwing wood on, like a stoker in a WW1 coal-fired
warship, than from the fire itself.

Oh yes. peak output about 15Kw..

Hmmm. I reckon our open fireplace (in the living room) actually
cools
the room down. (It's only for entertainment - we have oil central
heating.)

well with underfloor vents there are no in room draughts.

At flat out chuff I can pull the room up a degree and a smidgeon an
hour.

You need better control of ventilation and more insulation.

NO I dint. Its all up to modern specs

Abd pribabkyt kess ventilation than modern regs

Was your heating done by harry to NHS standards?

I can pull my conservatory up by 20 degrees in about 10 minutes using
1600W.

Is it 30 square meters?



Only 15.

does it contain 55 tones of cast screed floor and chimney inside the
insulation?



Heat storage like that isn't much good if you cant control it.

On 23/08/14 23:56, Dennis@home wrote:
On 23/08/2014 23:40, The Natural Philosopher wrote:
On 23/08/14 23:38, Dennis@home wrote:
On 23/08/2014 23:08, The Natural Philosopher wrote:
On 23/08/14 19:01, Dennis@home wrote:
On 23/08/2014 13:48, The Natural Philosopher wrote:
On 23/08/14 13:29, Huge wrote:
On 2014-08-23, The Natural Philosopher wrote:
On 23/08/14 12:12, Tim Streater wrote:
In article , The Natural
Philosopher
wrote:

[37 lines snipped]

And two open fires in the living/dining rooms..

Do those actually do anything? One we had here (since replaced
by a
wood burner) just shoved the heat up the chimney. I got hotter
from
standing there throwing wood on, like a stoker in a WW1 coal-fired
warship, than from the fire itself.

Oh yes. peak output about 15Kw..

Hmmm. I reckon our open fireplace (in the living room) actually
cools
the room down. (It's only for entertainment - we have oil central
heating.)

well with underfloor vents there are no in room draughts.

At flat out chuff I can pull the room up a degree and a smidgeon an
hour.

You need better control of ventilation and more insulation.

NO I dint. Its all up to modern specs

Abd pribabkyt kess ventilation than modern regs

Was your heating done by harry to NHS standards?

I can pull my conservatory up by 20 degrees in about 10 minutes using
1600W.

Is it 30 square meters?



Only 15.

does it contain 55 tones of cast screed floor and chimney inside the
insulation?



Heat storage like that isn't much good if you cant control it.


Actually its bloody GREAT because we never get too hot in summer.

And on average it makes no odds to heat loss.

The heat decays at the rate of about 10 degrees every 5 days if the
heating goes off..

whereas it only takes 8 hours to get it back up again..

The rooms above are not heated at all either,normally, they sit a
comfortable 4 degrees cooler.



--
Everything you read in newspapers is absolutely true, except for the
rare story of which you happen to have first-hand knowledge. €“ Erwin Knoll

"The Natural Philosopher" wrote in message
...
On 23/08/14 09:59, news wrote:
Have frequently wondered this myself as sitting watching TV at 18C in
summer seems fine but in winter seems too cold.

Humidity.

I doubt it.

summer humidity limits heat loss by evaporation.

But I get the same effect here and single
digit RHs here are very common in summer.

In winter with heating on, the indoor RH is much lower

But I dont heat at all in the winter anymore, just the
passive solar and so the indoor RH doesnt change
at all and is MUCH higher than in summer.

It is the wall temps that matter and there is also a light
level effect too. It starts to feel cold very quickly in the
early evening in edges of winter just due to the light
level dropping. You can see that the air temp and wall
temps haven't changed significantly, only the light level.

On 23/08/2014 17:04, Harry Bloomfield wrote:
David pretended :
Over the winter we run the CH between 18C and 20C depending on how
frugal and wimpish we are feeling.

Temperature in the main living room is currently 17.6C and 18C in the
hall where the thermostat sits.

So in theory we have reached the point of heating to maintain minimum
temperature - in August!

Our temperatures, wind speed, rain etc. are all continuously recorded.

From an indoor peak yesterday evening of 21.2 at midnight, it gradually
fell to 19.4C by 09:30 this morning, the lowest point of the day so far.
From 19.4C it gradually increased to 20.4C, with a great deal of people
going in and out the doors to the back garden.

We have had no heating on since around April / May. The only heat we
have had in the house is waste heat from cooking, TV's and PC's. For
several weeks until recently, we had numerous windows open.



Is that just solar gain and a shed-load of insulation? It's 14C in my
(Sheffield) kitchen right now . . .

--
Cheers, Rob

On 24/08/2014 00:31, The Natural Philosopher wrote:
8

does it contain 55 tones of cast screed floor and chimney inside the
insulation?



Heat storage like that isn't much good if you cant control it.


Actually its bloody GREAT because we never get too hot in summer.

And on average it makes no odds to heat loss.

No it doesn't so the fact you need such a high powered heat input for
such a small gain in temp makes no sense at all.

Every oldish house (pre 1980ish) that has cavity wall or external
insulation has a big chunk of masonry inside the insulation too. It
doesn't mean they need more than a few hundred watts to heat the place.

Modern houses may lack the masonry or use light weight thermal blocks.


The heat decays at the rate of about 10 degrees every 5 days if the
heating goes off..

whereas it only takes 8 hours to get it back up again..

The rooms above are not heated at all either,normally, they sit a
comfortable 4 degrees cooler.

Just think how much better it would be if you could control how fast the
heat went in and from where before you let it out at a controlled rate.

On 24/08/2014 02:31, RJH wrote:
On 23/08/2014 17:04, Harry Bloomfield wrote:
David pretended :
Over the winter we run the CH between 18C and 20C depending on how
frugal and wimpish we are feeling.

Temperature in the main living room is currently 17.6C and 18C in the
hall where the thermostat sits.

So in theory we have reached the point of heating to maintain minimum
temperature - in August!

Our temperatures, wind speed, rain etc. are all continuously recorded.

From an indoor peak yesterday evening of 21.2 at midnight, it gradually
fell to 19.4C by 09:30 this morning, the lowest point of the day so far.
From 19.4C it gradually increased to 20.4C, with a great deal of people
going in and out the doors to the back garden.

We have had no heating on since around April / May. The only heat we
have had in the house is waste heat from cooking, TV's and PC's. For
several weeks until recently, we had numerous windows open.



Is that just solar gain and a shed-load of insulation? It's 14C in my
(Sheffield) kitchen right now . . .


Probably solar gain, I haven't had heating on for weeks and the temp
hasn't dropped below 20C in the house. In fact its too hot in the
bedrooms even with forced ventilation and the windows open.

Forced ventilation is quite good, I built it using hydroponics (and home
brew) kit intended for filtering the smell from growing weed. It takes
all the smells and a lot of pollen out of the air. I might try and put a
heat exchanger in next if I can decide on how to get ducts to the
correct extraction points.

On Sun, 24 Aug 2014 00:31:27 +0100, The Natural Philosopher wrote:

Oh yes. peak output about 15Kw..

Hmmm. I reckon our open fireplace (in the living room)
actually
cools the room down.

Ours certainly did if we didn't fit the fairly draft proof blanking
board over the opening. If you got a good roaring fire going it could
augment the room heating but I doubt it could heat it properly, 60 sq
metres.

does it contain 55 tones of cast screed floor and chimney inside
the
insulation?

Heat storage like that isn't much good if you cant control it.

Actually its bloody GREAT because we never get too hot in summer.

I agree with that the thermal mass here keeps the place cool unless
it's stupidly hot towards, 30 C ish, outside for a week and even
then it'll barely make 25 C.

The heat decays at the rate of about 10 degrees every 5 days if the
heating goes off..

Don't think this place cools that quick and any way it slows down as
the in/out temp difference decreases. We did turn the heating off
when we went away for a few days not long after moving in. Never
again...

whereas it only takes 8 hours to get it back up again..

Because the heating got the air back up to temperature but the place
wasn't comfortable for two or three days as the thermal mass, mostly
walls, was taking the heat from the air. You couldn't feel drafts but
I expect if you done smoke tests there would have been cool air
flowing down all the walls.

--
Cheers
Dave.

On Sun, 24 Aug 2014 10:59:47 +0100, Dennis@home wrote:

We have had no heating on since around April / May.

April had mean exterior temp around 7 C, May closer to 10 C. The
heating is on...

Probably solar gain, I haven't had heating on for weeks and the temp
hasn't dropped below 20C in the house. In fact its too hot in the
bedrooms even with forced ventilation and the windows open.

On the sunny side close windows and curtains during the day, open
windows at night (if it's cooler outside).

Forced ventilation won't help if the air outside is hotter than
inside, unless you are cooling the air as it comes in. A simple
extract won't do that as the replacement air comes though tiny holes
etc.

--
Cheers
Dave.

On Sat, 23 Aug 2014 18:14:08 +0100, Capitol wrote:

Over the winter we run the CH between 18C and 20C depending on
how
frugal and wimpish we are feeling.

Think I'm in a minority, 25C winter, 24C summer!

Do you need a new thermostat? Or is that the real room
temperature?

I'm designed for a warm climate. That's the real temperature.

No it's what you are used to. 24/25 C is about my upper limit for
doing light physical work without dripping in sweat, even sat still
it's uncomfortable.

A nice working temp in T shirt is about 15 C. 5 to 15 would need a
jumper and fleece at the low end, just one of them at the upper. 0 to
5 C is just cold and damp, saps your energy for some reason. Below
freezing great just add another layer.

--
Cheers
Dave.

On 24/08/14 10:52, Dennis@home wrote:
On 24/08/2014 00:31, The Natural Philosopher wrote:
8

does it contain 55 tones of cast screed floor and chimney inside the
insulation?



Heat storage like that isn't much good if you cant control it.


Actually its bloody GREAT because we never get too hot in summer.

And on average it makes no odds to heat loss.

No it doesn't so the fact you need such a high powered heat input for
such a small gain in temp makes no sense at all.

Every oldish house (pre 1980ish) that has cavity wall or external
insulation has a big chunk of masonry inside the insulation too. It
doesn't mean they need more than a few hundred watts to heat the place.

Neither do I. To KEEP IT WARM. The UFH in that room is perfectly capable
of doing so at less than its peak rating of 50W/sq meter or 1.5KW.

But it takes well over 24 hours to get the heat into the thermal mass at
that output.


Modern houses may lack the masonry or use light weight thermal blocks.


The heat decays at the rate of about 10 degrees every 5 days if the
heating goes off..

whereas it only takes 8 hours to get it back up again..

The rooms above are not heated at all either,normally, they sit a
comfortable 4 degrees cooler.

Just think how much better it would be if you could control how fast the
heat went in and from where before you let it out at a controlled rate.


I can.


--
Everything you read in newspapers is absolutely true, except for the
rare story of which you happen to have first-hand knowledge. €“ Erwin Knoll

On 24/08/14 11:56, Dave Liquorice wrote:
On Sun, 24 Aug 2014 00:31:27 +0100, The Natural Philosopher wrote:

Oh yes. peak output about 15Kw..

Hmmm. I reckon our open fireplace (in the living room)
actually
cools the room down.

Ours certainly did if we didn't fit the fairly draft proof blanking
board over the opening. If you got a good roaring fire going it could
augment the room heating but I doubt it could heat it properly, 60 sq
metres.

does it contain 55 tones of cast screed floor and chimney inside
the
insulation?

Heat storage like that isn't much good if you cant control it.

Actually its bloody GREAT because we never get too hot in summer.

I agree with that the thermal mass here keeps the place cool unless
it's stupidly hot towards, 30 C ish, outside for a week and even
then it'll barely make 25 C.

The heat decays at the rate of about 10 degrees every 5 days if the
heating goes off..

Don't think this place cools that quick and any way it slows down as
the in/out temp difference decreases. We did turn the heating off
when we went away for a few days not long after moving in. Never
again...

whereas it only takes 8 hours to get it back up again..

Because the heating got the air back up to temperature but the place
wasn't comfortable for two or three days as the thermal mass, mostly
walls, was taking the heat from the air. You couldn't feel drafts but
I expect if you done smoke tests there would have been cool air
flowing down all the walls.

Exactly. UFH takes time because it doesn't warm the air directly. It
warms the fabric of the room. I have noticed that I can run UFH two
degrees cooler for the same subjective 'warmth' because there are no
cold spots and cold draughts.




--
Everything you read in newspapers is absolutely true, except for the
rare story of which you happen to have first-hand knowledge. €“ Erwin Knoll

On 24/08/14 12:04, Dave Liquorice wrote:
On the sunny side close windows and curtains during the day, open
windows at night (if it's cooler outside).

Thats exactly how we coped with teh very hot summer a few years back. I
had to fight SWMBO to keep the windows hut by day with air temps
approaching 30C or even more.

Inside we stayed at 25C day and night, and open the curtains by night
along with the windows, allowing the thermal mass to cool.

I learnt that trick in Mexico, Spain and Africa. - there they have
massive eaves overhangs to keep midday sun out, and insulated tops, but
there is no need for wall insulation, and masonry and concrete are way
preferred to timber for the house structure..

IN Scandinavia the total reverse is true, with massive picture windows
to maximise solar gain in winter, ultra low thermal mass structures
massively insulated so you can get very quick temperature rises if you
need it.

This house takes a bit more to heat *up* in winter, but very little more
to keep it warm once it is up to the mark, but it doesn't get massively
heat stroke stuffy in summer like so many cardboard-with-insulation
style houses of a more modern and cheap construction.


--
Everything you read in newspapers is absolutely true, except for the
rare story of which you happen to have first-hand knowledge. €“ Erwin Knoll

On 24/08/2014 12:30, The Natural Philosopher wrote:

Exactly. UFH takes time because it doesn't warm the air directly. It
warms the fabric of the room. I have noticed that I can run UFH two
degrees cooler for the same subjective 'warmth' because there are no
cold spots and cold draughts.

There is a huge downside to UFH, at least for some people:

http://www.erythromelalgia.org/WhatisEM.aspx

UFC would usually be better appreciated. :-)

--
Rod