Negativ Coefficients of Performance? Is it possible?


by stimulisRK
Tags: coefficients, negativ, performance
stimulisRK
stimulisRK is offline
#1
Oct5-11, 06:20 PM
P: 12
I'm doing some calculations for a refrigeration cycle were investigating in a lab. I've been out of thermodynamics for a while now and have some questions on coefficients of performance (COP)

I've calculated the COP using the enthalpies (h) at the four state points and I'm getting a negative COP (-.02). I don't remember much from thermo, but I "think" its ok to have it negative (gut feeling), but I honestly couldnt tell you why. Any info will be appreciated.

Thanks
Phys.Org News Partner Science news on Phys.org
Better thermal-imaging lens from waste sulfur
Hackathon team's GoogolPlex gives Siri extra powers
Bright points in Sun's atmosphere mark patterns deep in its interior

Register to reply

Related Discussions
my nay performance General Discussion 3
performance of the CPU Engineering, Comp Sci, & Technology Homework 7
How to plot actual compressor performance on manufacturer" performance chart? Mechanical Engineering 7
Fan Performance Electrical Engineering 2