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Dear colleagues!temperature
A few months ago your information and references were very helpful in
the preparation of an important (for me) lecture.
Now, I am writing again on the same problem. I was asked to prepare
a lecture for physics teachers in primary and secondary school about
heat engines as a part of a seminar about energy and entropy.
I will describe some funny heat engines like a drinking bird and
light mill, but I want to discuss also some more common things like
ordinary refrigerators. They will also make some efficiency measurements
and such things. Coming to the refrigerator, I could not find the data I
need for a crude quantitative picture of the cycle. As far as I know, the
the gas (which one) is expanded adiabatically below the transition
to the liquid state (the latent heat?) and that it is heated on the coldMojca, I see that nobody seems to have responded to your note - at least by
side to evaporate again.
So, I am asking you for a reference where I could find some data like the
latent heat and maybe something else like typical thermal conductivities
of refrigerator walls and such things....
Dr. Mojca Cepic
Faculty of Education
Ljubljana
Slovenia