Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - VW Golf with exhaust thermoelectric power: +5% MPG

jjackstone · 02-22-2009, 03:36 AM

Actually if I recall, from MetroMPG's and other's posts, the alternator disconnect has been showing about a ten percent gain in overall FE. Please correct me if I'm wrong. The TE generators do work but as has been stated are highly inefficient-- unless a newer technology has been released, they are generally between 3-5% efficient.
Doesn't matter what gear the vehicle is in, just the temperature differential between the "cold" side and the "hot " side of the junction.

Here is a link to one manufacturer of these junctions.
Hi-Z Technology, Inc.

Here is a link to a study performed using their devices a few years ago.
http://www.hi-z.com/papers/ICT%20200...ing(China).pdf

The main problem(just like solar panels) is the hi cost. Apparently the prices are decreasing if the devices are actually going to be placed in cars.

JJ

02-22-2009, 03:36 AM	#9 (permalink)
jjackstone Master EcoModder Join Date: Jan 2008 Location: Sacramento, CA Posts: 406 Thanks: 35 Thanked 143 Times in 105 Posts	Actually if I recall, from MetroMPG's and other's posts, the alternator disconnect has been showing about a ten percent gain in overall FE. Please correct me if I'm wrong. The TE generators do work but as has been stated are highly inefficient-- unless a newer technology has been released, they are generally between 3-5% efficient. Doesn't matter what gear the vehicle is in, just the temperature differential between the "cold" side and the "hot " side of the junction. Here is a link to one manufacturer of these junctions. Hi-Z Technology, Inc. Here is a link to a study performed using their devices a few years ago. http://www.hi-z.com/papers/ICT%20200...ing(China).pdf The main problem(just like solar panels) is the hi cost. Apparently the prices are decreasing if the devices are actually going to be placed in cars. JJ