Isochoric Compression Explained

[Gavroy]

hi

in school we talked about a process called "isochoric compression". i do not really know what they mean by that, since the word" isochoric" refers to a process that has always constant volume, whereas "compression" makes me think of a change in volume. is there anybody who can explain this oxymoron to me?

 

[Studiot]

What happens inside a sealed container of gas if you cool it down or heat it up?

 

[Gavroy]

heat up: pressure increases
cool down: pressure decreases

 

[Philip Wood]

Yes, compression literally means increasing pressure, so that could include increasing pressure isochorically, by raising the temperature, but 'compression' is so generally associated with squashing (reducing the volume) that I keep off the term 'isochoric compression', preferring something more long-winded, like 'isochoric increase of pressure'. Perhaps I'm just a wimp.