Design efficiencies (was: cost per kWh) [RE-wrenches]

[Kirk Herander, VSE]

I use the same 65-70% overall efficiency factor(array watt/hr per day
peak vs. usable ac output power) in a non-mppt system.

http://www.vermontsolar.com
Kirk Herander
Vermont Solar Engineering
POB 697
Burlington, Vt. 05402
ph 802.863.1202 - 800.286.1252
fax 802.863.7908
Xantrex Certified Dealer
NYSERDA-Approved Eligible Installer


-----Original Message-----
From: Ezra Auerbach, DragonSun Consulting [mailto:ezra at lasqueti.net] 
Sent: Monday, June 02, 2003 3:25 PM
To: RE-wrenches at topica.com
Subject: RE: Design efficiencies (was: cost per kWh) [RE-wrenches]

I think that battery system efficiencies are well below 80% and that we
simply hate to admit it.  I use 80% for battery efficiency, and agree
with the other numbers you propose.  I generally come out with a 65 -70%
overall system efficiency. 

Ezra 

- - - -
To send a message: RE-wrenches at topica.com

Archive of previous messages: http://www.topica.com/lists/RE-wrenches/

List rules & etiquette: http://www.mrsharkey.com/wrenches/etiquete.htm

Check out participant bios: www.mrsharkey.com/wrenches/index.html

Hosted by Home Power magazine

Moderator: michael.welch at homepower.com
==^================================================================
This email was sent to: michael_welch at sbcglobal.net

EASY UNSUBSCRIBE click here: http://topica.com/u/?bz8Qcs.bz9JC9.bWljaGFl
Or send an email to: RE-wrenches-unsubscribe at topica.com

TOPICA - Start your own email discussion group. FREE!
http://www.topica.com/partner/tag02/create/index2.html
==^================================================================