|Submited on :||Wed, 10th of Oct 2018 - 17:31:52 PM|
|Post ID :||9mxyay|
|Post Name :||t3_9mxyay|
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|Subreddit ID :||t5_2tk95|
Thank you for your Original Content, /u/GammelGrinebiter!
Here is some important information about this post:
Source: data export from Airthings Wave detector in my home Visualised in Microsoft Excel.
Radon is a radioactive, colorless, odorless, tasteless noble gas, and a carcinogen. It is continuously generated from the decay of other naturally occuring elements such as uranium, and is often found where there is a lot of granite in the ground. Norwegian authorities recommend to take action to limit radon in your home if the yearly average is above 100 Bq/m3. I live in an older house and was recommended to measure radon. Since I love bluetooth and data, I purchased an Airthings wave detector which continuously measure the radon radiation, sort of like a smoke detector.
This time series is much too short to say anything about the yearly average. Winter is often worse than the summer.
What I found very interesting was a spike that occurred after we rapidly increased the indoor temperature about three weeks ago. As we can see from the data in August, a high temp does not correlate directly with high radon values.
On Aug 10 we had a baby, and moved into the hospital for over five weeks. We reduced the temperature indoors to save money, but when we got home on Sep 18, my baby's mother increased the temp to 25 °C (77 °F) in an attempt to replicate the NICU conditions (which we later was told wasn't necessary). We heat the house with electric power in the early fall (and firewood in the winter).
The day after the sudden increase in temperature, we saw a large spike in radon activity. It disappeared as suddenly as it appeared, but it was clearly there. We have later learned that this is due to the increase in air pressure difference between the basement/ground and the house, caused by the increased temperature difference. The radon gas seeps in, and after equilibrium is restored, the problem disappears.
It might be that when your house is heating up the air starts to rise and "pulls" the radon from your crawlspace/basement onto the first floor.