Subcooling = Stacking Liquid Refrigerant (What Subcool really Signifies)

Before even starting this video, I'd like to say this. I subscribe to MANY different channels on YouTube. Some in mechanical engineering, some in electrical engineering. A few other HVAC ones and others that have nothing to do with anything. This is, hands down, the channel where I learned the most and I'm not even in the HVAC industry professionally. I do own a bunch of units because I'm a landlord, but this helps me understand the process of what I'm paying for and helps me sometimes troubleshoot a unit. For this I am grateful. My hat is off to you guys both in the classroom and out in the field. Your work is very much appreciated.

Way back in the day before I went to college and got an engineering degree, my old high school HVAC instructor explained subcooling (and superheating) in a way that a big dummy like myself could understand it. He first explained what sensible and latent heat were: Sensible heat being heat added/removed to change refrigerant temperature and latent heat being heat added/removed to change refrigerant state - and how until a state change is completed the temperature doesn't change. Once we understood that concept, subcooling is simply the sensible heat removed after the state change completed (condensed) and superheating is simply sensible heat added after state change completed (evaporated). You may have covered that prior to the video, but I found linking those two concepts really helped understand subcooling (and superheating).

I’m glad you actually care about technicians I’m just starting in the industry and I think all companies should still teach their techs like you do thank you 🙏

Finally a perfect statement. Stacking refrigerant. In engineering we would be "storing" the excess refrigerant.

Heres a respectable thought, this teacher has been awake loner than the whole class, and is probably the most tired, nevertheless he came punctual, provided a wealth of information. Kept the class awake, sought a challenging question. Taught himself in the process, extinguished questions and alleviated concerns, provided reassurance and implanted confidence. Thumbs up to you for going back home tired..

Low amount of subcooling can result from a lack of cooling by the condensing unit for many different reasons. (poor air flow, bad fan bearings, dirty condenser, unit surrounded by walls that are too close or vegetation, undersized condenser, low line voltage due to utility stress, damaged fan blades not moving enough air & other factors). So having insufficient sub cooling does not necessarily mean that more refrigerant needs to be added to the system. As I got near the end of this video, I realized that you did mention inspecting the equipment for cleanliness before analyzing sub-cooling. this video was very helpful with it’s in-depth discussion of sub-cooling. Thank you for helping me to get clearer on this topic.

Been in the field for many years and the way you explained subcool was simple, easy to understand and spot on. A excellent video. Wish I had you as a teacher back then.

All your teachings are are great we'll done and to the point. As an engineer I love your style it flows with thousands of hours of experience and wisdom in your teachings

I’m so glad I’m going to this hands on HVAC school. In my opinion, for me, I learn best hands on rather than reading through a book. Granted, the Schematics on the ac units help with wiring, nothings better than hands on learning. With that said, great video and you seem to be a great instructor!

Just sent this to the apprentice. Told him to subscribe to this channel for much learning 👍🏻 Clear and concise. Doff my cap to you sir.

Your "approach" and logical explanations are by far the best I have ever come across. There is no reason your technicians should not all be experts in there field and because I don't hear many questions in your presentations, I would assume they all are. You leave little room for discovery by removing the mystery. This is what makes your presentations so valuable and is a rarity. I will definitely continue to watch your videos. Thank you! " Advancements are made by answering questions. Discoveries are made by questioning answers."

This is super cool (see what I did there?) I have always thought of sub cooled liquid filling the condenser tube rows and stacking on top of one another. Never heard anyone else describe it like this. Bravo!

All of these sessions are SO VERY GOOD!

An amazingly simple concept made amazingly complex in this video.

Bryan this new series of videos are fantastic mate , keep up the good work 👍

this video was a god send along with the superheat video you guys put out. WHAT REALLY HELPED was the 3d models of the entire system running

I've been working in refrigeration for about 7 yrs. This video is awesome because I never went to tech school. I work Low-Temp and Racks... Also any Hot-side equipment that comes my way... Keep up the good work guys

Thank you for the videos and all the knowledge that you have given all of us

very good explanation of the topic.. kindly make a video explaining the copper piping when the indoor and out door units are at different elevations. Thanks

I like this channel. Very educative. Explained in detail.