Energy Breakdown Question...

Moderator: stan.hornbaker

Forum rules
Be nice!
Post Reply
rhettpep
Posts: 3
Joined: Sun Aug 06, 2006 4:12 pm
First Name: rhett
Last Name: pep

Energy Breakdown Question...

Post by rhettpep »

I have a difficult situation regarding Sterlings I am attempting to
address.

Assuming a 100K cold side and a 300K hot side

What is the % mechanical energy I might get out of such a situation
(rough estimates are fine)

What % of the energy might go to heating up the cold side
(rough estimates are fine)

What % of the energy would just 'cancel out' within the cylinder

Will all three of these % breakdowns cover 100% all of the energy
involved in the thermal drop from 300K - 100K? Am I missing any
general catagory of energy movement?

How well would these estimates work for a 500k hot side vs a 300k
cold side, fairly well or not at all?

Thank you!


stan.hornbaker
Posts: 532
Joined: Thu Jun 20, 2002 6:01 pm
First Name: William S.
Last Name: Hornbaker

Energy Breakdown Question

Post by stan.hornbaker »

Given a hi temp of 300K and low temp of 100K the Carnot efficiency is given by n = (Th -Tc)/Th or (300 - 100)/300 = 2/3 or .667
This is the maximum possible.

Since this is in a temperature area below ambient the machine would more likely be driven by a motor and used as a refrigerator, removing energy from an insulated cold space and discharging the wast heat to the 300K enviorment with a COP of 1.5 more or less.
Post Reply