psychrometrics Archives - Energy Vanguard https://www.energyvanguard.com/tag/psychrometrics/ Building science knowledge, HVAC design, & fun Thu, 12 Oct 2023 19:24:42 +0000 en-US hourly 1 https://wordpress.org/?v=6.6.2 Understanding Wet Bulb Temperature https://www.energyvanguard.com/blog/understanding-wet-bulb-temperature/ https://www.energyvanguard.com/blog/understanding-wet-bulb-temperature/#view_comments Wed, 11 Oct 2023 15:27:38 +0000 https://www.energyvanguard.com/?p=8609 That gorgeous photo of a Massachusetts lake above illustrates some interesting psychrometrics.  Those little bits of mist are tiny water droplets full of molecules that not long before had been part of the lake.  In the air between those misty…

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]]> https://www.energyvanguard.com/blog/understanding-wet-bulb-temperature/feed/ 5 Is That Really Condensation? https://www.energyvanguard.com/blog/is-that-really-condensation/ https://www.energyvanguard.com/blog/is-that-really-condensation/#view_comments Tue, 19 Sep 2023 12:21:11 +0000 https://www.energyvanguard.com/?p=8565 Look at that photo above.  Is condensation really responsible for all that moisture you see?  We use the term “condensation” a lot when talking about water vapor interacting with materials.  But when it comes to porous materials like wood, concrete,…

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]]> https://www.energyvanguard.com/blog/is-that-really-condensation/feed/ 10 Can Cold Surfaces Wring Moisture From Dry Air? https://www.energyvanguard.com/blog/can-cold-surfaces-wring-moisture-from-dry-air/ https://www.energyvanguard.com/blog/can-cold-surfaces-wring-moisture-from-dry-air/#view_comments Tue, 21 Feb 2023 14:32:22 +0000 https://www.energyvanguard.com/?p=8105 Cold air is dry air, right?  Think about the humidity in your house in winter compared to what it is in summer.  If you’re in a humid climate, it’s going to be drier in winter.  Even in dry climates, it’s…

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]]> https://www.energyvanguard.com/blog/can-cold-surfaces-wring-moisture-from-dry-air/feed/ 11 Five Fun Facts About Dew Point Temperature https://www.energyvanguard.com/blog/five-fun-facts-about-dew-point-temperature/ https://www.energyvanguard.com/blog/five-fun-facts-about-dew-point-temperature/#view_comments Thu, 02 Jun 2022 12:45:09 +0000 https://www.energyvanguard.com/?p=7463 The humidity is returning for the summer here in the southeastern US.  And as you may know, I don’t use relative humidity to gauge how humid the outdoor air is.  Why?  For starters, the humidity can get up to 100%…

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]]> https://www.energyvanguard.com/blog/five-fun-facts-about-dew-point-temperature/feed/ 13 Building Science Term of the Week: Grains of Water https://www.energyvanguard.com/blog/building-science-term-of-the-week-grains-of-water/ https://www.energyvanguard.com/blog/building-science-term-of-the-week-grains-of-water/#view_comments Thu, 15 Jul 2021 12:34:29 +0000 https://www.energyvanguard.com/?p=6184 Every area of building science has its jargon.  And I’m not just talking about the acronyms, initials, and abbreviations that get thrown around casually.  I’ve been making a list of the most interesting, useful, or stupefying BS terms and giving…

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]]> https://www.energyvanguard.com/blog/building-science-term-of-the-week-grains-of-water/feed/ 7 Defogging Your Car Windshield with Psychrometrics https://www.energyvanguard.com/blog/defogging-your-car-windshield-psychrometrics/ https://www.energyvanguard.com/blog/defogging-your-car-windshield-psychrometrics/#view_comments Fri, 18 Jan 2019 13:29:52 +0000 http://energyvanguard.flywheelsites.com/?blog_post=defogging-your-car-windshield-with-psychrometrics A lot of people don’t understand the best way to defog their car windshield in wet, cool weather.  About 30 years ago, I was on a group trip on a hired shuttle bus.  The outdoor temperature was probably in the…

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]]> https://www.energyvanguard.com/blog/defogging-your-car-windshield-psychrometrics/feed/ 21 Make Dew Point Your Friend for Humidity https://www.energyvanguard.com/blog/make-dew-point-your-friend-humidity/ https://www.energyvanguard.com/blog/make-dew-point-your-friend-humidity/#view_comments Sun, 08 Jul 2018 22:15:18 +0000 http://energyvanguard.flywheelsites.com/?blog_post=make-dew-point-your-friend-for-humidity I’ve been on a bit of a mission for the past several years.  My goal is to get more people thinking about humidity in terms of dew point rather than relative humidity.  Why?  Because relative humidity is misleading.  That whole…

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