Theory of heat
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What is heat?
The physics answer is movement of molecules. The temperature answer is any temp above -459 degreesF or -273 degreesC.
But how do we perceive heat in our world? Certainly a flame would be considered hot. but would ice be considered hot?
If you asked a person that lives in Point Barrow Alaska what a warm day is and then asked someone living in Hawaii what a warm day is you would get quite different answers.
Can a color be warm? The photos on the right seem somewhat cold. The photos on the left seem to be warmer.
But how do we perceive heat in our world? Certainly a flame would be considered hot. but would ice be considered hot?
If you asked a person that lives in Point Barrow Alaska what a warm day is and then asked someone living in Hawaii what a warm day is you would get quite different answers.
Can a color be warm? The photos on the right seem somewhat cold. The photos on the left seem to be warmer.
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In the HVAC industry, we make heat through chemical means, such as fire.
The heat we are producing from fire is a release of heat that added to a substance from the sun.
All heat we use originally came from the sun except nuclear.
If we burn wood the heat released came from sunlight that made the tree grow.
Oil that is burned is releasing heat that was added millions of years ago from the sun.
The other operation we do is we move heat.
To do this we use air conditioning and refrigeration. More on this later.
The heat we are producing from fire is a release of heat that added to a substance from the sun.
All heat we use originally came from the sun except nuclear.
If we burn wood the heat released came from sunlight that made the tree grow.
Oil that is burned is releasing heat that was added millions of years ago from the sun.
The other operation we do is we move heat.
To do this we use air conditioning and refrigeration. More on this later.
The history of space heating
One of the first uses of heat was for space heating.