"The idea that, once the window opens, the rising warm air pulls in the cold air, I believe is not quite right. What I'm seeing here is a chicken and egg thing. As for chickens, who knows which came first. But as for which entity caused a change…"
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Cameron Taylor
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Cameron Taylor replied to Bud Poll's discussion The science of hot air rising"Wow. After several month's hiatus, this dormant thread surges back to life! :)
Bud, for your illustration here, I can't help but note that as soon as the window is opened and cold air enters, warm air directly adjacent to the window…"
Cameron Taylor replied to Bud Poll's discussion The science of hot air rising"John, I've thought about something you hit upon in your reply regarding why "how the world works" seems to be lost on many people. Back when life for most human beings was more or less hand to mouth, knowing how the world worked made…"
Cameron Taylor replied to Bud Poll's discussion The science of hot air rising"Causality in our case at hand?
Whatever upsets equilbrium. In Bud's illustration, Figure 1 has the indoor and outdoor conditions of the building at equalibrium. Only when the indoor air was heated above the outdoor air temperature was this…"
Cameron Taylor replied to Bud Poll's discussion The science of hot air rising"Good way to put it, Ted. Well done.
The air columns in this case are the weights, and the pivot point is the building envelope. The air columns are at different weights due to their respective temperature/density continuums. As Bud's…"
Cameron Taylor replied to Bud Poll's discussion The science of hot air rising"Bud, the illustration found at your link is excellent! In just one spot, several variables I've wrestled with when contemplating our topic at hand seem to merge beautifully. Well done!
In your example, you gave a measurement of 101,325 pascals…"
Cameron Taylor replied to Glen Gallo's discussion Is LEED Lip Stick on a Pig?"What I keep looking at in your reference to the large LEED certified house in NY is the ratio of building size to normalized occupancy rate. Five stories, two people.
One can go on at length about hitting the LEED biggies like embodied energy…"
Cameron Taylor replied to randy tolowski's discussion Resnet and NATE and BPI"Speaking from the HVAC side of things, the ongoing complaint I've heard about NATE is that the significance of NATE certification isn't heavily marketed toward the end user, meaning building and/or equipment owners. I think more people are…"
Cameron Taylor replied to Ti Mougne's discussion Dirty Sock Syndrome in high efficiency HVAC units"Your mention of the low spot in the flex ducting collecting water (thereby soaking the insulation at some point, most likely) makes me wonder if internal duct lining may contribute to DSS. The OP is puzzled by his DSS in that he's running a gas…"
Cameron Taylor replied to Bud Poll's discussion The science of hot air rising"Often, when I sense someone is ahead of me, I try not to plod on undeterred like I have no ability to sense they're already on my wavelength. It's not an easy skill to learn, but it's a necessary one. When people sense you are aware…"
Cameron Taylor replied to Bud Poll's discussion The science of hot air rising""Hot air rises" may not be scientifically correct, but what easy, catchy phrase is there that could readily supplant it? "Cold air displaces hot air"? "More dense air displaces less dense air?" We've spent five…"
Cameron Taylor replied to Bud Poll's discussion The science of hot air rising"Ah...I think I've found someone beside me who has ventured past the "myth" curtain, and the verbal harrangue from the little man behind it to ignore him. I just joined this forum, and finding this thread is a good sign I've…"
Profile Information
- Company
- Amon Carter Museum of American Art
- Professional Certification
- RSES Certificate Member (CM), ICE Commercial Refrigeration/Residential HVAC
- Professional Interests
- HVAC, with emphasis on musuem environmental management, building science - residential and commercial, energy management
Comment Wall (1 comment)
- At 12:16pm on January 20, 2012,
Diane Chojnowski said… Hi Cameron,
Welcome to Home Energy Pros! Feel free to join the conversation in the Forum and Groups. And share your energy efficiency photos, videos and upcoming events. If you're blogging about home performance, this is the place for you!
Don't forget to upload your profile photo. And add your location on our Member Map!
Thanks!
Diane, HEP Moderator
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