What is a BTU anyways?

A short explanation of how to calculate water temperature rise in °F, given certain BTUs per hour.

[ludovicchungsao]

Thank you for the clear illustrations. It helps to conceptualize :D

[sarqeles]

Your graphics helped me understand it instantly, thank you!

[odd_life_chavez]

I started understanding like halfway through the video really informative

[derrickcook]

Thank you for making this video. most sources online are forgetting to incorporate the timeframe. Which is very critical to know

[erikanthes]

It makes sense that people living in 50 degrees would want to be warm.

[sambilamjian]

Welcome! A rolling boil calls for the bigger burner. Bear in mind that if this is a business or time sensitive operation, there is no relying on the small burner. Also, when you drop cool material (i.e. food) into a rolling boil, water temperature drops dramatically and it takes a bigger burner to recover.

[kpcoffee]

Thanks so much... Just a follow up.. How much heat loss is possible? I definitely need a rolling boil. Should I buy the gas burner with 16400BTU output or spend the extra $70 (which I don't really have) and get the burner with 43000BTU output?

[xsiguencia]

Thank u for explain that easy good video

[bigdaddy]

The time factor is usually left out of many formulas

[alexberg]

Does it work the inverse way around?
Let’s say I have a fuel that is 20, 000 BTU per pound of fuel. The formula says that a pound of this fuel, when burned, could raise the temperature of 20, 000 lbs of water one degree in an hour.
Now, let’s say you burn that same pound of fuel over 1 pound of water. Will it theoretically heat that water up to 20, 000°F?

[IAmTheBookie]

Thank you so much! No one would explain to me where this hour came from!

[shahryzal]

thank you for post your video..it very useful for beginner like me..

[hdjksa]

So BTU's are the same a calories only different amount of time and amount of water and empirical units.

[jonathanhenderson]

Ok so., ...
Does that mean that 50, 000 BTU will heat 50K Litres of water by one degree or one litre of water by 50, 000°F ???

[RealeaD]

What does 1000 BTU mean? Also, what does 1000 BTU/hour means? Is the former measured per second or an hour? There is no info. Kind of strange.

[waleed.said]

how can calculate the cooling load room ?please

[sambilamjian]

Assuming that you are close to sea level, water will boil at 212°F. That is 162°F increase from 50°F. 66lbs of water will require 162 x 66 = 10692 BTUs. If the burner output is 16400 BTU per hour, and if you could get all the heat transferred to the water, it should be able to boil that amount of water in 40 minutes. This is theoretical. I am not factoring in heat loss while heating up the water. Also, it is almost impossible to deliver all that heat from the burner to the water without loss.

[kpcoffee]

If I have 66lbs of water at say 50F and want to bring it to a rolling boil and my gas burners output is 16400BTU will I have sufficient heat required to do so?