Posted by GeWart on February 12, 2007, 11:55 pm
I have a under the house 2 car garage with a large basement.
I can get a marine engine, 4 cyl 40 hp.
I can get a 10 kw generator.
and a 1000 gal tank like a propane tank.
My idea is to hook the engine to the generator to generate electicity to
sell bak to the electric company what I don't use.
The marine engine will run on natural gas or propane.
The exhaust is water cooled.
The engine is water cooled.
I want to put a heat exchanger in the large tank and run the cooling water
from the engine and exhaust through the heat exchanger.
This will heat the water in the tank which I will use to pump to heat the
house and the hot water for the home.
The thermostat calls for heat and turns on the water pump to heat the base
board hot water heaters.
When the water temp gets so low, the engine starts up to heat the water up
and also pump electricity out.
Where are the problems??
Posted by Steve Spence on February 13, 2007, 12:37 am
Most utilities will refuse to buy back your electric unless it's wind or
pv. It's not easy running engines as primary power. We used to run our
veggie gen 18 hours a day. There is a lot of maintenance involved.
Dir., Green Trust
Posted by BobG on February 13, 2007, 1:09 am
He could have the engine spin a permanent magnet alternator that
charges a battery bank. The power company will buy back from a grid
tie inverter, right?
Posted by Vaughn Simon on February 13, 2007, 2:04 am
That idea is a non-starter. Depending on who is doing the figuring, it
costs 5 to 10 cents per KWH (wear & tear on the battery) to store energy in a
deep cycle battery. That figure is independent of the costs to generate the
power. The power company might well pay you less than that.
Posted by Eeyore on February 13, 2007, 3:54 am
Even if they do he'll be making a loss on it !