Heat and Temperature?

[BoyntonStu]

Many folks confuse Heat and Temperature.

Many Youtubers show a Hydroxy flame melting steel.

Are you impressed by the heat of the demonstration?

If you answered yes, you are being mislead.

A match burns at many hundreds of degree, yet it has little heat energy.

Imagine boiling a cup of water with a match.

The match would burn up before the cup was lukewarm.

There is little fuel in a matchstick.

A match makes a high temperature but it gives very little heat.

Ditto a Hydroxy torch running at 1 LPM.

I doubt whether a 1LPM hydroxy torch could boil a cup of water.

I sure would like to see someone try it on Youtube.

The torch can use its high temperature to melt a SMALL piece of wire etc., but it will not burn through a bigger piece.

The Temperature is right but there is not enough heat.

Here's another example, you.

Your temperature of 98.6*F is right, but try to heat your home.

OTOH a heat pump putting out 98.6*F through the vents has enough Heat to warm your house.

I hope that this helps to clarify the difference between Heat and Temperature.



BoyntonStu

[Walt]

I believe heat is the describes the movement of energy.

Temp is the measurement of molecular movement (kinnetic energy). At the same temp some molecules are slow and some are fast (more energy), temp is an expression of the average.

One easy way to understand heat is, is that cold does not exist. At -100f there is heat because we know that temperatures exist above and below it. If the -100f was next to a -200f area the heat would move from the -100 to the -200.

Heat is movement of energy.

Walt

[dennis13030]

Many folks confuse Heat and Temperature.

Many Youtubers show a Hydroxy flame melting steel.

Are you impressed by the heat of the demonstration?

If you answered yes, you are being mislead.

A match burns at many hundreds of degree, yet it has little heat energy.

Imagine boiling a cup of water with a match.

The match would burn up before the cup was lukewarm.

There is little fuel in a matchstick.

A match makes a high temperature but it gives very little heat.

Ditto a Hydroxy torch running at 1 LPM.

I doubt whether a 1LPM hydroxy torch could boil a cup of water.

I sure would like to see someone try it on Youtube.

The torch can use its high temperature to melt a SMALL piece of wire etc., but it will not burn through a bigger piece.

The Temperature is right but there is not enough heat.

Here's another example, you.

Your temperature of 98.6*F is right, but try to heat your home.

OTOH a heat pump putting out 98.6*F through the vents has enough Heat to warm your house.

I hope that this helps to clarify the difference between Heat and Temperature.



BoyntonStu

Your words would make better sense if you were to replace your term "heat" with "total thermal energy".

[BoyntonStu]

Your words would make better sense if you were to replace your term "heat" with "total thermal energy".

If I used the expression "total thermal energy" it would not be close to what the average person thinks about Heat and Temperature.

When we say "hot" many think 'heat' as in the expression 'we are having a heat wave' because the temperatures at hotter than normal.

Why the high Temperature?

The Heat supplied by the earth and the sun raises the Temperature.

"Total thermal energy" would be meaningless to the average person.

In physics, heat, symbolized by Q, is energy transferred from one body or system to another due to a difference in temperature.

Heat = MS (T2-T1) is what I have in mind whenever heat is mentioned.


BoyntonStu