Psychrometrics Made Simple 

We're starting to get a little traction but it always helps if you share and spread the word! Thanks for the kind words :)

@@CAPTIVEAIRE This video was top noch! I'm not in the industry, but it was great to get a better understanding of how the equipment in a space functions :)

If it were renamed ' Woke Psychrometric Chart "' everybody would see it

Wow, thanks! We need more people like you to keep sharing these, haha

Much appreciated!

I'm glad you got something out of the video! And I've experienced the same in many fields, it's common to only "know what you need to know." But others like you and myself like to learn the why, and I find it helpful in many ways. Thanks for the comment, German Tabor (filmmaker).

Glad it helped. Thanks for watching!

You're correct, we'll get it right next time!

"Condensate" could also be used in a verb form.

Glad you enjoyed it!

Thanks for your feedback SharlsRS. Yes, sometimes we leave some stuff out purposely, sometimes it slips through, yours are very good points nonetheless.

You're welcome a ton!

Good suggestion, we will try adding SI equivalents for future videos.

Great questions. We have a video on load calculations that may be helpful to give more context to this here ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-0YCyJ1bQ3qo.html 1. Yes in a way. The thing is, we generally want a discharge temperature when cooling no lower than 55°F (there are exceptions). This is for comfort purposes, as colder air would feel too cold to the people in the building. So typically equipment is sized based on 55°F and the corresponding airflow CFM to ensure that in peak conditions this still provides enough sensible cooling. However, although sensible loads may be met, 55°F dry bulb also means roughly a 55°F leaving air dew point, and sometimes this isn't enough latent cooling to dehumidify the space to offset latent loads, so we may have to continue cooling the air to say a 48°F as this removes more moisture from the air. But now that discharge may be too cold to be comfortable. It also may mean that, depending on space loads and the sensible heat ratio of the space, we can't really achieve the window of space conditions we want to target. This is where reheat comes in, allowing us to "decouple" in a way how we handle the latent and sensible loads. We can cool the air however low we need to in order to offset latent loads, then reheat to the perfect temperature to ensure the discharge temperature is perfectly matched to the sensible loads. One example of where we may not care too much if we just discharge 48°F air is a kitchen, where the staff may not mind a cooler discharge since they're exposed to so much heat from within the kitchen. We don't have to use reheat, it's just an option that in certain cases allows for more comfort and tighter control over space and discharge conditions. 2. RH% of the leaving air would decrease as you say. But ultimately what we're concerned with is this discharge mixing with the air in the space, and the final mix having the correct temperature and humidity.

thank you for the explanation!@@CAPTIVEAIRE

Thank you for your feedback!