Location
Ottawa, Ontario
"Cohort 43 is quite unique in that there are no face-to-face meetings, but lots of GoToWebinar meetings to discuss protocol and findings. Curiously, people seem to have more time available to come to internet meetings, record incidents in their house…"
"There is more COVID-19 advice coming from reputable organizations. For example, for workplaces (rather than homes), here is some advice from the World Health Organization:
https://www.who.int/docs/default-source/coronaviruse/getting-workpl..."
https://www.who.int/docs/default-source/coronaviruse/getting-workpl..."
"The members of this group could start by listing reputable HVAC-related guidance for COVID-19. Here is some European advice:
https://www.rehva.eu/fileadmin/user_upload/REHVA_covid_guidance_doc...
and here is a workplace document from the WHO:
https:…"
https://www.rehva.eu/fileadmin/user_upload/REHVA_covid_guidance_doc...
and here is a workplace document from the WHO:
https:…"
"The ROCIS Range Hood Guidance Document update - see below - has resulted in correspondence with researchers and ventilation experts. During those conversations, several interesting points emerged:
- The range hood capture efficiency testing is progr…"
- The range hood capture efficiency testing is progr…"
"Tom Phillips will be talking about climate change and houses at 12:00 Friday on IAQ Radio: https://www.iaqradio.com/
Tom always has interesting things to say on this important topic. "
Tom always has interesting things to say on this important topic. "
"We have had very few smokers in the ROCIS sample of participants. They were not deliberately excluded: it may be that smokers do not wish to participate in a survey on particle counts in houses. The results could be discouraging. In this cohort, the…"
"OK, I did five trials of approximately the same set-up. Each time the onions were ready and taken off the burner (or squelched with canned tomatoes) 8 minutes following the start of heating. Initial Dylos total readings ranged from 72 to 281. Peak D…"
"There have been two particle sources that have been identified lately. One participant said that his wife's hairdryer activity would send Dylos counts to 20,000. What causes that? Is it particles given off by the dryer itself or hair/treatment parti…"
"There was a significant drop in outdoor particles on March 31, 2019. Outside was in the Dylos "Excellent" range, or less than 75 counts. That is very unusual. Here is the Dygraph for that day:
When outside particles go down so quickly, you often s…"
When outside particles go down so quickly, you often s…"
"The beauty of a duct running in an unfinished basement is that you can put a clean-out/inspection cover at the bottom of the vertical run and check it ever so often."
"There are more sensitive CO detectors on the market but, unfortunately, their very sensitivity makes it impossible to meet UL standards. The revised Canadian CO sensor standard, CSA 6.19, has a section for sensitive alarms. I am not sure if any prod…"
"Brennan
Most of the research we did on combustion spillage (including surveys) was undertaken in the 1980s. Retrieval of those reports (even ASHRAE papers) is not easily done through Google or other general sources. The corporation I worked for, CMH…"
Most of the research we did on combustion spillage (including surveys) was undertaken in the 1980s. Retrieval of those reports (even ASHRAE papers) is not easily done through Google or other general sources. The corporation I worked for, CMH…"
"I saw an interesting article on cleaning make-up air which referenced the hardware found in hydroponics shops. If you really want an effective carbon filter with a supplemental balancing fan, here is a description of where to find one: https://www.j…"
"So here is my first report (after which I will wait until I have multiple trials). I am trying to set a baseline for frying a single onion plus garlic clove in a cast iron fry pan (8 inch bottom diameter) on an electric burner. The kitchen windows a…"
"My new Dylos is coming in today. I am going to try and calibrate an onion being fried, as I often start a recipe with frying up a diced onion. I will use the Dylos to record the peak on several frying attempts so that I will have a baseline to compa…"
"Tom, I have seen the Allegheny County Health Monitor RAMP data and it showed a significant drop in PM 2.5 in the early morning of January 24 from about 13 micrograms per cubic m to < 1.0. The timing and size of the drop correlates well with the Dylo…"
Comments
Don -
Hope you are doing well and enjoying life!
I am working on an IAQ program for existing homes with the EPA and wondered if I could get you to take a look at a short section on combustion safety. I think it's covered, but I would welcome your input.
Thanks. Paul
Don,
I never got a link from you to the low cost particle monitoring group. Or if I did I don't know where it arrived. Thanks in Advance, Rana
Thanks, Don!
Hi Don,
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Diane, HEP Moderator