Ecological COP and Availability Loss
Can anyone please help by defining the two related terms in the title:
'Ecological Coefficient Of Performance' and 'Availability Loss'
From the paper: 'Performance optimization of irreversible refrigerators based on a new thermo-ecological criterion':
"Performance conditions for the ECOP and COP criteria are the same yet they have different meanings. The COP gives information about the necessary power consumption in order to produce a certain cooling load while the ECOP gives information about the entropy generation, i.e. the loss rate of availability."
What exactly does 'Ecological' COP mean and what is the 'Availability Loss' ?
Thanks ahead
Re: Ecological COP and Availability Loss
Re: Ecological COP and Availability Loss
That looks very useful, cheers Brian. I have read one paper on it but it didn't even explain the term and not easy to get the exact meaning but i will read through that as well.
Re: Ecological COP and Availability Loss
James;;
Availability, in thermodynamics jargon, refers to the ease by which energy sources may be utilized. It has been many years since I did those horrible homework assignments so I cannot remember even the simplest of equations.
Here is the example I remember: The oceans are the world's largest thermal source. The availability of this energy is low because the effort to extract it outweighs it's value. A hot spring would have high availability if you need one and it happens to be nearby.
ECOP and availability loss are terms I am either unfamiliar with or did my best to forget. Availability was covered in the last week of a particularly difficult class. My brain was already full and we were told availability would not be addressed on the final exams.
Re: Ecological COP and Availability Loss
Thanks for your knowledge Doug, hope I didn't evoke too many painful memories :). I will remember that example as well. I think ECOP is quite a new term from what I can gather, probably why it's hard to find anything on it for me. cheers