HVAC 167 ICE latent heat of fusion

When Ice Changes state from a Solid to a liquid it absorbs heat this is also latent heat.
In this video we discuss Latent heat of fusion with ICE vs just "cold" water.
We give examples of the BTU difference between the 2 and how that would affect an ice chest.
Dr John Gorrie used Ice and fans to cool his patients who suffered from Malaria and Yellow fever. He discovered treatment greatly improved with lower temperatures. He went on to patent the first Ice Machine. Here is a link to that book on Amazon
amzn.to/3yxS54y
He made Ice and changed the world: The story of Florida's John Gorrieby Linda Hansen Caldwell
ISBN 978-1620236925

[@thefred0215]

This is why i Love the Trade! Not everyone appreciates the dynamics.

[@norbeynerey8606]

God bless you sir

[@andybrice2711]

There are some really great explanations here! It takes the abstract physics and explains it in a way which is very tangible.

[@ansarullahansari4892]

Love your videos Keep uploading

[@chesstime356]

Nice video I really enjoyed watching your videos thanks

[@slimjimjuju7266]

LOVE IT !!! KEEP UP THE EDUCATION

[@JohnnyJr396]

Ty you’re the best on YT!

[@sunriseeternity300]

super cool video. thank you

[@tarassu]

Imperial science is like reading horoscope

[@davidtwumasi2684]

Tnx for sharing 🤝

[@signaltouch7413]

you are amazing

[@mylenebeaulieu2411]

hello , would you kindly make a video on " identifiying reverse or direct reset " in HVAC application ? i don't really understand that part...

[@thanktheknife]

Thanks Ty! Is this why it's so important to get liquid evaporating within the evaporator? Due to the extremely higher heat absorption compared to just vapor? Also makes me think about how much more energy is required to get product to freeze!

[@love2hvac]

Yes that's exactly right!

[@MichaelRainabbaRichardson]

I'm scratching my head trying to figure out why you're using Fahrenheit and not celsius, then it occurs to me that BTUs must be the English unit. Still, given how much easier these concepts are understand on the Celsius scale, why not use it? I am American and grew up with the Fahrenheit system, but once I started working with science that cared about temperature, Fahrenheit was clumsy. Something as simple as understanding that saturation State as being zero Celsius rather than 32 f, helps my brain better understand the bigger picture because zero has meaning for 32 doesn't unless you happen to remember why that number is significant due to the context. Zero communicates meaning all on its own. Now I'm off to go confirm my understanding of the calorie relative to the btu and see what knowledge I'm missing in that area. Great video!

[@love2hvac]

Thanks Michael. I completely agree, it's time to retire the queen's old English rule comprised of hundreds of individual scales trying to work together. The metic system is much simpler and easier to understand. However my fellow Americans would rather continue to pass these antiquated unconnected measurements on than make a change. Oh the excuses people give every time I talk about it. 😔 That said, as an educator I do my best to educate my students for their success. Since all the HVAC equipment is still using the British Thermal Unit for sizing and capacity I will dredge on. I have so many other battle fronts of change I am pushing for, I will leave this one for another day.

[@mikemcelveen]

Why is the room at 95 degF? How are you not sweating buckets?

[@ozziewelcome5612]

👍👍👍👍

[@yeahforbes]

Any idea how that 144 BTU number will vary based on the salinity of the water? For example, if I make a solution of salt and water that's 20% salt by weight (0.25 lb of salt added to 1 lb of water: 0.25/1.25 = 20%), then instead of fusion at 32F we will have fusion at roughly 2F according to en.wikipedia.org/wiki/Saline_water#Properties which is great for transporting frozen food in a cooler, and just within the ice production capacity of a typical freezer set to 0F. I think the latent heat will unfortunately be reduced a bit, not the full 144 BTU/lb. Between that and the greater delta T between the cooler and ambient, the ice won't last as long. I'm curious how much of that reduced time is due to each of these factors.

[@love2hvac]

Yes the saltiness changes everything!

[@yeahforbes]

@@love2hvac But does it reduce the latent heat only a little bit, or does it cut that 144 in half, or what? By the way, I had trouble with 20% salt (2F) not freezing in a reasonable amount of time with a typical freezer temp, so I'll be aiming for 18% salt (7F) in my next attempt.

[@love2hvac]

@@yeahforbes it's a good question I don't don't have the time to research it alright now. You are on the right track, find out and let me know!