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Equipment Sizing and Airflow in Different Markets
Improving Humidity Control on the Cheap
The Impact of Adding or Removing Water From Air
Room Sensible Heat & CFM – Advanced Psychrometrics Part 1
Ventilation, Filtration, and Humidity Control: The Holy Trinity of IAQ
Does a Furnace Decrease Humidity?
Relative Humidity of Air Below Freezing
A Bit of Adiabatic Air Science For Techs – FB Live Video
Q&A – Condensating Vents – Short #208
#humidity
Tech Tips:
This tech tip was heavily informed by Ed Janowiakโs past symposium presentations. You can watch his presentation about setting proper airflow HERE. You can also now purchase your tickets for the 6th Annual HVACR Training Symposium HERE. HVAC School was founded by a Floridianโrepresenting Climate Zone 2, to be exact. So, itโs no surprise that […]
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This tech tip was submitted by Steve Rogers, the current president of The Energy Conservatory (TEC). Steve has been on the podcast several times in the past and is a valued contributor to HVAC School. Thanks, Steve! As summer approaches, HVAC technicians all over the US are preparing for those difficult conversations with occupants about […]
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Air conditioning was about humidity control from the very start. Willis Carrier’s very first air conditioning system was all about controlling the humidity with the side effect that it also could reduce the sensible temperature. Theaters caught on that this newfangled contraption could lead to big summer numbers when they installed it to keep patrons […]
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This is the first of a three-part series of articles that will dive deep into advanced psychrometrics. The source material for each of these articles may be found in ACCA Manual P Sections 3, 4, and 5. This article is based on information found in Section 3.ย Psychrometrics is the study of the physical and […]
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At the time of the publication of this article, COVID-19 (coronavirus) is spreading across the world at an alarming rate, and many people have self-quarantined to help slow or stop the spread of the virus. These precautionary measures are prudent and responsible. However, with the increased amount of time people spend inside their homes, there […]
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Does heating the air cause the humidity in the air to decrease? Yes and no. Heating air causes the RELATIVE humidity percentage to decrease, but it does not change the overall moisture content in grains of moisture per lb of air. Many old-timers will swear a blue blaze that oversizing a furnace will directly result […]
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I was listening to someone talk about air relative humidity the other day while looking at a psychrometric chart, and he commented that the chart ends down at freezing (32ยฐF) because “all the water freezes out of the air at that point.” I think I made this Jed Clampett face: The psychrometric chart is designed […]
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In this video Bryan talks about Heat (Enthalpy) Adiabatic cooling Latent and Sensible heat Evaporative Cooling Humidity Blower Off Delay
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Videos:
Podcasts:
๏ปฟ๏ปฟ In this short Q&A podcast episode, Bryan answers Kenton’s question about how to stop vents from condensating, especially when sealing and insulation don’t do the trick. When approaching a condensation problem, we have to consider the source of moisture and where the condensation is happening. Moisture that builds up on top of the vent […]
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