Read this: (CHP = Combined heat and power) This is from another board I am
on..........Very interesting proposal.........
"Here's a possible proposal to keep the costs of suburban motoring down,
whilst making use of renewable fuels and the energy efficiency available
from a CHP system.
The illustration is intended for suburban UK, but the model could be
adjusted to apply to any suburban city.
It basically combines your energy requirements for electricity, heating and
suburban transport such that all three can be met using a single system that
burns renewable fuel. It effectively offsets the heat energy wasted by an IC
engine as a means of providing home heating, and uses an electric vehicle as
a means of load balancing an otherwise poorly balanced CHP system.
A small commuter car, the G-Wiz has been available in the UK for some 3
years now, and it is gainig popularity in London, mainly because it is
excempt the £8 daily congestion charge, and parking is free at many
locations in central London.
http://www.goingreen.co.uk/store/
It has a maximum range of 48 miles at urban city speeds, and has a battery
pack of approximately 10kWh.
Whilst a small diesel engine genset can provide sufficient power for a
typical household, the heat recovered is generally insufficient to meet the
winter needs of the house.
By incorporating the charging of a small commuter type electric vehicle,
with a battery capacity of close to 10kWh, the total daily electrical load
would be effectively doubled, thus doubling the available heat output.
The battery of the EV would act as a load balancer for the CHP system at
times of low domestic power demand.
Assume that 10kWh is needed for the household per day and 10kWh is needed to
recharge the EV.
20kWh of electicity will require 10 litres of fuel per day at a cost of
£0.30 per litre. Fuel cost £3.00
20kWh of electricity at £0.10 kWh is worth £2.00
Recoverable heat from 10 litres of fuel = 50kWh heat worth £1.50
Mileage available form EV, up to 48 miles per day, off-setting diesel fuel
costs of about £0.10 per mile.
In principle, for someone commuting 20 miles each way, this technique could
reduce heat power and transportation costs to about £3 per day.
Additional top-up heat could be supplied by burning the fuel directly if
needed.
Any thoughts?
Ken"
Mike
----- Original Message -----
From: "Peter Frederick" <[EMAIL PROTECTED]>
To: "Mercedes Discussion List" <mercedes@okiebenz.com>
Sent: Sunday, May 27, 2007 1:53 PM
Subject: Re: [MBZ] Fuel Mileage
There is no environmental gain from using chargeable hybrids -- you
just replace using gasoline or diesel for the much higher carbon output
coal fired power plant (with huge transmission loses, as they never
build the plants were the power is used, they stick us poor
midwesterners with them).
The real solution is not to drive as much, and I've gotten into the
habit of staying home on weekends.
Peter
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