On Feb 7, 10:51 am, "Ian Currie" wrote:
Down to minus 9.6C at my Chipstead Valley station near Coulsdon, Surrey.
Ian Currie-Coulsdon and Chipstead Valleywww.frostedearth.com


Stop boasting. :-) What was it in your back garden? The
minimum here was -6.3°C, the lowest for less than 2 years, there
being a rather freakish -6.9°C on 28 Feb 05.

Tudor Hughes, Warlingham, NE Surrey, 556 ft.

"John Hall" wrote in message
...
In article .com,
Steve J writes:
With an overnight minimum temperature of -5.6C, we have had our
coldest February night since 1991 (-7.8C) in Coventry;
snip

That's an astonishing statistic. It shows how mild recent Februaries
have been.
--

Not particularly frost prone here but at -5.3º last night was the lowest
February minimum temperature since 27th February 1986

All the best


--
George in Epping, West Essex (107m asl)
www.eppingweather.co.uk
www.winter1947.co.uk

On 7 Feb 2007 00:25:56 -0800, "Steve J"
wrote:

With an overnight minimum temperature of -5.6C, we have had our
coldest February night since 1991 (-7.8C) in Coventry; it went down to
-10.9C on the ground.

In rural Warwickshire it was -8C at Church Lawford, and we had lying
snow at Hatton, near Warwick. A real wintry scene at last!

Shock horror, the temperature got below 30 degrees F last night here,
-1.5 deg C minimum.

All that after a day maximum yesterday of +8 degrees and a a mere +6
degrees C at the moment and, my goodness... it's sunshining!!!

What I am really worried about is the forcast of cold rain tonight or
possibly, perish the thought, some sleet or even wet snow for an hour!

I think i'm going to have to move to the south of Spain.... LOL!

Dave
Fareham on the Solent Riviera.

On 7 Feb 2007 00:25:56 -0800, Steve J wrote in
roups.com

With an overnight minimum temperature of -5.6C, we have had our
coldest February night since 1991 (-7.8C) in Coventry; it went down to
-10.9C on the ground.

In rural Warwickshire it was -8C at Church Lawford, and we had lying
snow at Hatton, near Warwick. A real wintry scene at last!

It was about -6C here, the coldest in quite a number of years, but not sure
how long. What caught me out was my central heating tank and associated
feed pipes outside. The oil had thickened to such a degree that it didn't
flow when the heating was meant to come on this morning. It took until
near noon to thaw enough.

Does anyone have an idea of the temperature at which 28 sec oil gets too
viscous to flow?

--
Mike Tullett - Coleraine 55.13°N 6.69°W posted 07/02/2007 15:32:04 GMT

Mike Tullett wrote:

It was about -6C here, the coldest in quite a number of years, but not sure
how long. What caught me out was my central heating tank and associated
feed pipes outside. The oil had thickened to such a degree that it didn't
flow when the heating was meant to come on this morning. It took until
near noon to thaw enough.

Does anyone have an idea of the temperature at which 28 sec oil gets too
viscous to flow?

Heating oil / diesel is hygroscopic. Absorbed moisture can form ice
crystals and block the pipe even though the fuel itself is still capable
of flowing freely.


--
Richard Lamont http://www.lamont.me.uk/

OpenPGP Key ID: 0x5096714C
Fingerprint: F838 740C 76B4 6EC6 9ECC 1C4D A4DE 3322 5096 714C

FYI

Totterdown, Bristol http://www.afour.demon.co.uk/weather/
-4.5°C recorded early this morning was coldest temperature at above site
since January 2003 (-4.6°C).

3.5°C now 16:00GMT, pressure falling steadily and wondering if it really
will snow tonight?

--
Regards
Barry Horton



"Steve J" wrote in message
oups.com...
With an overnight minimum temperature of -5.6C, we have had our
coldest February night since 1991 (-7.8C) in Coventry; it went down to
-10.9C on the ground.

In rural Warwickshire it was -8C at Church Lawford, and we had lying
snow at Hatton, near Warwick. A real wintry scene at last!

Steve Jackson
Bablake Weather Station
Coventry UK
www.bablakeweather.co.uk

On 7 Feb, 15:32, Mike Tullett
wrote:
On 7 Feb 2007 00:25:56 -0800, Steve J wrote in
roups.com

With an overnight minimum temperature of -5.6C, we have had our
coldest February night since 1991 (-7.8C) in Coventry; it went down to
-10.9C on the ground.

In rural Warwickshire it was -8C at Church Lawford, and we had lying
snow at Hatton, near Warwick. A real wintry scene at last!

It was about -6C here, the coldest in quite a number of years, but not sure
how long. What caught me out was my central heating tank and associated
feed pipes outside. The oil had thickened to such a degree that it didn't
flow when the heating was meant to come on this morning. It took until
near noon to thaw enough.

Does anyone have an idea of the temperature at which 28 sec oil gets too
viscous to flow?

--
Mike Tullett - Coleraine 55.13°N 6.69°W posted 07/02/2007 15:32:04 GMT

Hi, Mike,

Sounds like you have some moisture in the pipes. I've not heard of it
freezing up in this area. Mine is on 24 hours and governed by
thermostats etc so there is a regular flow of oil through the feed
pipe. Some of the flow is caused by "dry cycling" just to keep the
boiler up to heat but it keeps the house warm and the system ticking
over. It is much more practical in a cold climate as is keeping the
solid fuel back boiler on low all night.

Ken
Copley 253metres, nr Barnard Castle, Teesdale, County Durham
http://copley/mysite.orange.co.uk

"Steve J" wrote in message
oups.com...
With an overnight minimum temperature of -5.6C, we have had our
coldest February night since 1991 (-7.8C) in Coventry; it went down to
-10.9C on the ground.

In rural Warwickshire it was -8C at Church Lawford, and we had lying
snow at Hatton, near Warwick. A real wintry scene at last!

A min of -7.6C here this morning a new record low for me.
Records go back to Sept 2000.
--
Col

Bolton, Lancashire
160m asl

On 7 Feb 2007 08:29:38 -0800, Ken Cook wrote in
ups.com

Sounds like you have some moisture in the pipes. I've not heard of it
freezing up in this area. Mine is on 24 hours and governed by
thermostats etc so there is a regular flow of oil through the feed
pipe. Some of the flow is caused by "dry cycling" just to keep the
boiler up to heat but it keeps the house warm and the system ticking
over. It is much more practical in a cold climate as is keeping the
solid fuel back boiler on low all night.

Thanks Ken (and Richard too). So water is the most likely culprit and that
makes sense, as it is the first time in the 20 odd years I've been here
that such a problem has arisen. I was finding it hard to believe a temp of
-6C could have caused the oil to go waxy.

At least I now know how to free it and bleed the boiler.

--
Mike Tullett - Coleraine 55.13°N 6.69°W posted 07/02/2007 19:22:39 GMT

On 7 Feb 2007 08:29:38 -0800, Ken Cook wrote:

Does anyone have an idea of the temperature at which 28 sec oil gets
too viscous to flow?

Sounds like you have some moisture in the pipes. I've not heard of it
freezing up in this area.

Something odd, maybe a U (might be very shallow) with water in it.

We've never had a problem up here even with overnight lows below -10C and
ice days. Our heating notionally goes off about 2330 until 0630 but parts
of the system are on a frost stat so when it does get that cold it will
fire up a couple of times/night.

Tank outlet is about 18" maybe 2' above the boiler but the pipe run is
quite long 20m or so all exterior apart from the last metre.

--
Cheers
Dave. pam is missing e-mail