Duct (flow) Puns

Presumably the adhesive strength varies greatly between diseases. If the strength is near the lower limit and blood starts flowing faster because of running etc. , does that mean that white cells detach from disease and healing is interrupted badly?

How about covid-19 related sticking?

By the way, is this kind of sticking yet another hurdle in the way of making medical microbots ( 5 to 10 µm wide ) that cure disease? Microbots may need to stick to cells in order to determine whether they are disease and detach if not. There may have to be some kind of electrically contolled "gecko feet" that switches on or off based on the programming of the device. That sticking might be part of the identification process while other measurements provide more information that helps avoid false positives and false negatives.

Hi, I need to measure air flow out of ducting, similar to a dryer exhaust. I've got a few ideas, but so I don't reinvent the wheel, is there a "standard" way of doing this?

Thanks for your input!

Hello. I'm looking to upgrade my dust collection system and need a simple flow switch. Wanted to get switches like the white and blue ones shown here on the front of this guy's work table. Unfortunately, I cannot seem to find them anywhere. Any leads on where to score some? Thanks!!

https://preview.redd.it/dufsuxk6s1z51.png?width=2356&format=png&auto=webp&s=11dcc598abaab2836e3093a9b5ad26b3717e74a2

http://imgur.com/gallery/Ca0gYhh

So I have had a flow problem in a couple rooms since I moved to the house. Turns out my blower is wired to a medium speed and my supply ducts were put together wrong apparently. I attached a drawn picture of the supply plenum right after HVAC that branches out to multiple ducts.

As you can see the biggest duct at the very top supplies to the rooms on the opposite side of the house, but it's directly in the flow of air from the HVAC. Is that normal? Or should I re do the plenum and move the largest duct to one of the sides and keep the top closed? I think that's why I have very low flow to the ducts at the bottom besides the fact my blower is not putting out enough CFM as it should be. Which I will fix eventually.

I seem to never fully understand this concept, and I feel like some of the confusion might be the difference between these two sites. Does anyone know of a good resource I can use to solidify this concept?

whenever i’m about to cry people ask me if i have a bloody nose or something lol, stops me from being a train wreck tho

My house has an addition i'm using as a bedroom that gets very little airflow. Would adding one of those fans in the duct help? For reference addition is on a crawl space with the flexible ducting.

Home built in 1998. Goodman furnace 2 years old. The room is 270sqft and has one register which is on the wall opposite the 3 windows. This room will be 52 degrees on a 20 degree day if I close the door. With the door open it will be around 58, mostly from air from the hallway making its way inside. The trunk line from the furnace for the second floor is 7inch in the basement and is still 7inch at this rooms register. The other rooms upstairs receive a lot of heat while only blowing slightly more forcefully. Insulation in the crawlspace where this rooms line is appears more than sufficient. That being said, it is over a garage and therefore exposed on 5 sides.
I need this room to be comfortable as it will become my toddlers room around October. I'm not terribly concerned about this room during the summer since it only varies from the rest of the house by being hotter by about 7-8 degrees. There is a ceiling fan and the windows can be opened for that.

Does it seem like adding an inline booster for this room would be the answer? Or would it just blow cool air more forcefully in the winter? Where should it be positioned?

I have received quotes for mini-splits for this room but am possibly willing to try a $100 fix before dropping $4,000.

DOI: 10.1021/i160044a015

URL

Hey guys,

Hope this is the right place to post!

My house has a room that gets little to no air flow from the ducts. Ever since they were put in years ago. 1960s

Is there a good way to look for blockage, closing, or can this happen by the nature of the duct shape?

The duct is one in the middle of the layout in a ranch style house.

Let me know if you need any additional information!

Thank you!

Clogged duct and nothing seems to be clearing it? Try a vibrator.

Just wanted to share something that worked well for me. I have been trying to clear one side all day. I tried nursing, pumping, the haaka trick, warm compress, and nothing was working. I was googling for other ideas and came across lactation vibrators. Of course, I didn't have one of those, but I did have a regular old wand vibe. It worked! pumping with vibration applied to the clogged area. Who knew!

I have seen a few of the fang upgrades on thingaverse that show airflow simulation in the preview pics.

Can someone explain how people are getting this info? I would like to test out a design I have for my CR10.