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Baby it's cold outside

by Evo
Tags: baby, cold, evo
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Borek
#127
Jan25-10, 04:46 PM
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Still nights below -20 deg C, but it is about to change to minus few. According to the forecast pressure is going to drop down by 50 hPa in next 50 hours - that is 37 mm Hg.

Meteopaths (is such a word in English?) are going to die, all of them simultaneously.
turbo
#128
Jan25-10, 05:26 PM
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The temperature (night-time mind you) is 45 deg F and rising with high winds and torrential rains. We've probably already gotten 2-3 inches since mid-afternoon, with flood watches in place over most of the state.
Borek
#129
Jan26-10, 02:01 AM
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Quite the opposite here, we woke up to -15 deg F. Unfortunately that was enough for the main water pipe to freeze, we have no water at the moment. Chances that the pipe burst are minimal, ice is most likely only in a short vertical part between ground and the house - enough to block.

I have put a heater next to it and we are waiting. It is isolated with 10 or 15 cm of rock wool, apparently when it gets that cold that's not enough. Trick is, now the heat has to penetrate the isolation, so we have to be patient.
Vasara
#130
Jan26-10, 01:13 PM
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It's been around -25 C (-15 F or so) for a while here in Finland. It should be getting warmer later this week, up to -5 C even, and it's also going to snow some more.
Evo
#131
Jan26-10, 01:23 PM
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Quote Quote by Borek View Post
Quite the opposite here, we woke up to -15 deg F. Unfortunately that was enough for the main water pipe to freeze, we have no water at the moment. Chances that the pipe burst are minimal, ice is most likely only in a short vertical part between ground and the house - enough to block.

I have put a heater next to it and we are waiting. It is isolated with 10 or 15 cm of rock wool, apparently when it gets that cold that's not enough. Trick is, now the heat has to penetrate the isolation, so we have to be patient.
I hope you have water again.
Borek
#132
Jan26-10, 01:26 PM
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Ice in pipe melted after about 3 hours, I have blocked ventillation opening that is close to the pipe, hopefully that'll be enough. It is already -18 deg C (around 0 deg F), it will be even colder tonight, but probably not as cold as yesterday.
Andre
#133
Jan26-10, 01:32 PM
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Relatively cold here too, so close to the sea -5C at maximum today, mid twenties, -10C or colder expected tonite. But these are records for this area. However, it did not stop Enrunwen to go to her social obligations by bike.

Success with the water Borek.
Borek
#134
Jan26-10, 02:02 PM
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Freezing pipes are nothing new here.

House was poorly isolated from the very beginning. Up to now we had similar problems twice, different pipes were frozen each time, with unexpected effects like only hot water in some taps. Two years ago we have added additional layer of isolation below the house, so now pipes that go "inside" the floor but over the isolation are safe. However, that also means that empty space below the isolation is much colder (we are not heating it from the top), and the pipe that got frozen this time is just in this free space - so I was not entirely surprised by what have happened. I couldn't decide to add isolation just in case - if it ain't broken, don't fix it.

Now I know it IS broken. I have to remember to add some additional isolation to the pipe in spring or summer.
turbo
#135
Jan26-10, 02:21 PM
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I suggest that instead of additional insulation, you consider wrapping that section of pipe with a thermostatically-controlled heat strip. I don't know if you have access to them, but you can buy them around here, and they do a pretty good job. They only turn on when the temperature falls below a pre-set level, so they don't consume that much electricity. You can get cheaper resistive heater-strips with no thermostat, but you end up paying for extra electrical consumption whenever you "guess" you should plug it in and when you forget to unplug it.

If you want to Google the stuff, it's often called "pipe wrap heat tape" or similar in the US.
Borek
#136
Jan26-10, 02:31 PM
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Thanks, will look into it.
turbo
#137
Jan26-10, 02:38 PM
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Quote Quote by Borek View Post
Thanks, will look into it.
Good luck. Places that sell heat tape often sell neoprene insulation. It looks like a pipe made of foam, with a split down one side. After you wrap the pipe with heat tape, pop the insulation over the wrapped pipe and seal the split with duct tape. It increases the effectiveness of the heat tape and saves you more money. Around here, there are lots of people who heat primarily or entirely with wood, and their cellars are cold and uninsulated, so we are pretty dependent on heat tape and neoprene pipe insulation to keep the water flowing.

I had to install extra rigid foam insulation on one wall of my cellar. We leave the floor of the house uninsulated so some heat gets down there, but we needed some extra help keeping the cellar warm enough so that our garlic and squash don't freeze.
radou
#138
Jan26-10, 02:49 PM
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It's -7 C right now in here in Croatia, which is pretty cold, but still okay, since we've had a one-week period of an average -15 C a few weeks ago. You get used to it.
rewebster
#139
Jan26-10, 06:40 PM
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Cold weather and potholes--

boy, hitting a pothole at ~65mph compared to ~30mph gives a whole new meaning of 'shocks' to the car. Another alignment for the car in April or May
Gokul43201
#140
Jan26-10, 07:18 PM
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Quote Quote by radou View Post
It's -7 C right now in here in Croatia, which is pretty cold, but still okay, since we've had a one-week period of an average -15 C a few weeks ago. You get used to it.
Wow! I thought I was gone a while, but this is a blast from the past. You been hibernating, radou?
dlgoff
#141
Jan26-10, 07:47 PM
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Quote Quote by turbo-1 View Post
I suggest that instead of additional insulation, you consider wrapping that section of pipe with a thermostatically-controlled heat strip.
When I did a little modification of my incoming water line, I noticed that the copper line was really starting to get deteriorated for being too warm. The heat tape was wrapped without any space between the wraps. I replaced the copper and heat tape but this time with a shorter one that just runs parallel to the pipe that was suggested by the installation instructions. I should have know this since when I was working at a chemical plant, we would make heat tape runs of hundreds of feet parallel to the lines.

In short, too much heat can be bad.
rewebster
#142
Jan26-10, 08:03 PM
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Quote Quote by dlgoff View Post
[B] When I did a little modification of my incoming water line, I noticed that the copper line was really starting to get deteriorated for being too warm. The heat tape was wrapped without any space between the wraps. I replaced the copper and heat tape but this time with a shorter one that just runs parallel to the pipe that was suggested by the installation instructions. I should have know this since when I was working at a chemical plant, we would make heat tape runs of hundreds of feet parallel to the lines.

In short, too much heat can be bad.
that's why hot water lines always freeze (and break) first just about always in colder weather before the cold water lines---the heat from warm water changes the copper


"In short, too much heat can be bad."--but I do like summer a lot more than winter!
Borek
#143
Jan27-10, 02:54 AM
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Plastic piping and we are talking only about one cold line which can freeze, but thanks for the remarks.
S_Happens
#144
Jan27-10, 09:49 AM
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I just got back from a Ski trip in Colorado where it stayed below 20 F at the base of the mountains the whole trip (so mostly single digit skiing). I was watching the sun rise monday and the thermometer stayed at 0 F until an hour and a half after the sun peeked over the mountains.

Being from Houston, I'm not used to anything like that.


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