#61
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rubber compounds
On Mon, 05 Mar 2018 06:54:18 +0100, Emanuel Berg
wrote: The inside wall is made of some sort of stone material (it engulfs a chimney) but yes, it is colder than the outside walls which are wood. No condensation tho. Now it's 19.2C/21% but everything still feels cold. Perhaps it is my own immune system... I'm currently at 15.6C and 42%RH inside and quite comfortable. At 19.2C, it's still a little cold, but with such low RH, you should be feeling only slightly cold. Are there any more tests save for the temperature/humidity? The reason I ask is every time I wake up I'm completely out of my head. It improves rapidly tho but even after a really good they the sleep and morning is the same, awful. I Googled the symptoms and it matches perfectly "brain fog" and hypoxia! But I'm only at 15-25 MASL so that should be impossible, right? Does this only happen in the winter when you are burning firewood or running a gas/propane/oil heater? If so, methinks you should test for carbon monoxide. Buy or borrow a CO meter (not a smoke/CO detector) and measure the CO accumulation: https://www.ebay.com/sch/i.html?_nkw=carbon+monoxide+meter https://www.detectcarbonmonoxide.com/co-health-risks/ The meters/monitors are slow to respond at low concentrations. The sensor also has a limited life, usually 5 to 8 years depending on chemistry and technology used: https://www.fayengineering.com/articles/carbon-monoxide-has-your-carbon-monoxide-alarm-expired I've found that my home CO level is fairly low (5-8 ppm) all night, except for a big spike (25 ppm) just as the fire dies down in the early morning. CO is produced by incomplete combustion. https://www.abe.iastate.edu/extension-and-outreach/carbon-monoxide-poisoning-checking-for-complete-combustion-aen-175/ A fingertip pulse oxymeter MIGHT show a lack of oxygen: https://www.ebay.com/sch/i.html?_nkw=fingertip+pulse+oxymeter However, for CO poisoning, they're not a good indicator. I would get one anyway in case your problem is caused by sleep apnea. https://www.amperordirect.com/pc//z-pulse-oximeter-sleep-apnea.html [1] http://user.it.uu.se/~embe8573/bike/wood-td-2018.jpg Nice, but please post smaller photos. I have an assortment of felling axes, splitting axes, hatchets, mauls, wedges, and hammers. I rarely use them, except for the hatchets, which I use to chop up kindling. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
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#62
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rubber compounds
Jeff Liebermann wrote:
CO meter (not a smoke/CO detector) [...] A fingertip pulse oxymeter Great, thanks a lot! -- underground experts united http://user.it.uu.se/~embe8573 |
#63
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rubber compounds
On 3/5/2018 2:33 AM, Jeff Liebermann wrote:
On Mon, 05 Mar 2018 06:54:18 +0100, Emanuel Berg wrote: The inside wall is made of some sort of stone material (it engulfs a chimney) but yes, it is colder than the outside walls which are wood. No condensation tho. Now it's 19.2C/21% but everything still feels cold. Perhaps it is my own immune system... I'm currently at 15.6C and 42%RH inside and quite comfortable. At 19.2C, it's still a little cold, but with such low RH, you should be feeling only slightly cold. Emanuel should keep in mind that his 19.2C is air temperature. If it's much colder outside and if the walls have too little insulation, their surface may be significantly colder. In that situation, one's body loses heat by radiation to the cold surfaces. That can be quite uncomfortable. It's the opposite of the comfortable feel one gets from the radiant heat of a fireplace or similar source. Over one winter I worked in a tiny company sited in a huge concrete block building, a former auto body shop. The lab areas had no heat except a radiant tube heater up towards the ceiling fueled by natural gas. Despite the low air temperature (maybe 15C) it was quite comfortable under that pipe. But anywhere else in that area, one felt chilly indeed. -- - Frank Krygowski |
#64
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rubber compounds
On Mon, 05 Mar 2018 10:16:54 +0100, Emanuel Berg
wrote: Jeff Liebermann wrote: CO meter (not a smoke/CO detector) [...] A fingertip pulse oxymeter Great, thanks a lot! Please take carbon monoxide exposure seriously. Long term exposure can cause weakening of the heart muscles, independent of oxygen deprivation effects: https://www.google.com/search?q=carbon+monoxide+heart+effects I suggest that you buy some kind of CO detector as soon as possible to make sure you don't have a problem. I think a chemical exposure tag might be the fastest: http://www.sportys.com/pilotshop/carbon-monoxide-detector.html http://www.mypilotstore.com/MyPilotStore/sep/4420 http://www.lifttruckstuff.com/lifttruckstuff.com/product/productdetail.aspx?d=6&p=77 https://www.homedepot.com/p/Carbon-Monoxide-Detector-CA101/100173604 https://www.maplin.co.uk/p/carbon-monoxide-detector-patches-gg65v Try pilots supply shops, industrial auto supplies, and fire fighters suppliers. Response time sucks on these detectors so be prepared for an overnight test: 100 PPM 15-45 min 200 PPM 4-5 min 300 PPM 2-4 min 400 PPM 1-4 min Also, keep them away from household cleaner fumes, chlorinated hydrocarbon solvents, air "freshener", and incense which will ruin the chemical detector. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#65
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On Mon, 05 Mar 2018 15:15:32 -0800, Jeff Liebermann
wrote: Mo https://www.ebay.com/itm/Sleep-Safe-Carbon-Monoxide-Detector-2-Cards-Per-Pack-Card-Sensor-Visual-Aid/221789512112 https://www.ebay.com/itm/Carbon-Monoxide-Detector-Twin-Pack-/122996481684 https://www.ebay.com/itm/Arctic-Hayes-PH019AC-Sleepsafe-CO-Detector-White-Pack-of-2-/112675779953 -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#66
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rubber compounds
Summary of below message:
Why is the %RH so high in the carpentry? Do the sawdust bind the humidity or something like that? Anyway it is a complete disaster to work there now; I can only be active for like 10-15m before I have to get inside to recover. I can feel literally how my mental/physical health deteriorates every minute I'm there! preassure tempC %RH mb/hPa insulation feeling heat -------------------------------------------------------------- studio 20.9 21 OK comfy 3 oil carpentry 6.0 59 1003 poor sickening 1 fan bakery 5 poor OK 1 oil bike WS 1 none OK none Here in the studio, where I have 3 oil heaters, it is now 20.9C with 21%RH which is pretty comfy. Most areas still have a coldish touch, tho much less so than before when outdoor temperature was some -10 to -15C (now its -1 or 0C). In the carpentry, which is in the same wood building but it has a lesser degree of insulation, and also instead of the three oil heaters only a single heat fan, it is 6.0C and 59%RH with 1003 mb/hPa. Here, it is extreamly unpleasant - I cut a plank and filed it with power tools in 10m or so and still reacted very negatively with coldness and coughing my brains out until I got out. Bakery: 5C with one oil heater; insulation poor. Bike workshop: 1C with no insulation, and next to the front door which is opened all the time, including to access the carpentry. Both bakery and bike workshop are not unpleasant to work in, tho fiddling with cold tools quickly makes your hands cold like instantly. -- underground experts united http://user.it.uu.se/~embe8573 |
#67
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On Wed, 14 Mar 2018 00:35:53 +0100, Emanuel Berg
wrote: Why is the %RH so high in the carpentry? You may have a heat leak somewhere in the room, which is dripping water into the room. It might be inside the walls, where you can't see the water. The rather low 6.0C temperature might be an indication that the insulation is failing due to water absorption. Also, oil heaters remove water from the air. It's common to use a humidifier with an oil heater. https://learn.compactappliance.com/heaters-humidifiers-during-winter/ Do the sawdust bind the humidity or something like that? Yes, it does. https://www.youtube.com/watch?v=5StVDxqODLI Weigh identical volumes of wet and dry sawdust and compare. If sawdust takes water out of the air, then the air humidity should decrease, which it hasn't. Something is wrong but without additional numbers, my best guess is water in the carpentry insulation. (Incidentally, in the USA, we call it the "wood shop"). pressure tempC %RH mb/hPa insulation feeling heat -------------------------------------------------------------- studio 20.9 21 OK comfy 3 oil carpentry 6.0 59 1003 poor sickening 1 fan bakery 5 poor OK 1 oil bike WS 1 none OK none -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#68
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On Wed, 14 Mar 2018 00:35:53 +0100, Emanuel Berg
wrote: tho fiddling with cold tools quickly makes your hands cold like instantly. Take an old pair of very thick wool socks such as Big R's "ragg" socks. Slide them over your hand, letting your thumb stick out through the hole in the heel. Cut the toes off at your knuckles. It helps a lot, particularly if the leg covers most of your forearm. I can knit and type wearing "wristers"; wrenches should not be a problem. (Though mine were a closer-fitting custom-knitted pair.) -- Joy Beeson joy beeson at comcast dot net http://wlweather.net/PAGEJOY/ |
#69
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Joy Beeson wrote:
Take an old pair of very thick wool socks such as Big R's "ragg" socks. Slide them over your hand, letting your thumb stick out through the hole in the heel. Cut the toes off at your knuckles. It helps a lot, particularly if the leg covers most of your forearm. I can knit and type wearing "wristers"; wrenches should not be a problem. (Though mine were a closer-fitting custom-knitted pair.) I have "torghandlarhandskar" (literally square seller gloves) which are gloves with cut ends at the fingertips. But the forearm stuff was new to me. I have many Merino wool socks so one of them would be optimal, I think. -- underground experts united http://user.it.uu.se/~embe8573 |
#70
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Jeff Liebermann wrote:
Also, oil heaters remove water from the air. It's common to use a humidifier with an oil heater. The water that is removed from the air, isn't this the same as in relative humidity? If so that is right now 20%RH which should be fine, right? Another thing I was thinking about is all the computer gear and equipment that is on 24/7/365+1. Typing this, I have a projector some 15-20 cm from my head. Is this anything to be concerned about and do you have a gadget to measure that as well? -- underground experts united http://user.it.uu.se/~embe8573 |
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