yeah well the subject lasted 1 year but i repeated 4 times since it was very tuff
are you afraid of someone you look down on having same or more preparation than you?
tell me whats wrong in this then:
the vapur pressure differnce bewteen top and bottom with a gradient of five degrees its 100 kpa
this means the wheel can work with 10 m diametrum on a 5 º gradient
how much work is that for kg of r12?
1*10*10=100 J
whats the internal energy difference for 5 º WITH R12
http://energy.sdsu.edu/testhome/Test...C/TSatR12.html
around 2000 J/kg in the best case
around 5000 j/kg in the worst case
U variation=Q-W
2000=Q-100
Q=2100
eficiency=w/q=100/2100=4.7% eficiency
in the worst case: 100/5100=2%
maximum eficiency for carnot?
1-cold focus/hot focus=1.3%