Renewable Energy Projects
Learn More About Renewable Energy | Projects | Tips | Reviews | Breaking News
Full Design & Installation Available For Solar Hot Water | Wind Turbines | Solar Panels | Micro Hydro | Off-Grid Power
Contact Andy Now For A Free, Friendly Quote or Chat On UK - 07504 50 50 89
Whilst I have been over here in Brisbane Australia it has shocked me seeing the blatant waste of fossil fuel, Not just electricity waste but also petrol and diesel. The current price of 1 litre of petrol in Brisbane is around $1.39 AUS or £0.70 GBP which is almost half the price of what you expect to pay in the UK. Everyone drives 3.0, 3.5 4.0 4.5 or 6.0 Litre automatic cars and Utes (Vans) it scares me to think how the global cost of fossil fuels will impact Australia in the next 2-3 years.

Another thing that stands out a mile is that the Sunshine is here, most days, all day, yet in my 2 weeks so far I have seen 1 Solar PV installation and 2 Solar Hot water installations! From the picture above taken from Southbank on the River Brisbane one evening ALL the city is illuminated through the night! EVERY night is the same.

It seems to me I was extremely naive in thinking only the US was power abusive, far from it.


Kind regards


Andy Mahoney
Home Brew Power
Off-Grid Power Installer - UK)
www.homebrewpower.co.uk

Mobile: 07504 50 50 89
HomeBrewPower Yahoo Group On Carbon Neutral Power
http://groups.yahoo.com/group/homebrewpower/


Posted by Picasa

Labels:

I would like to let everyone who has supported me through looking and learning about Renewable Energy via http://www.homebrewpower.co.uk/ that I am going to Australia this Saturday.

The last 10 years of my life have been life changing, I have had some great times learning all about Lister CS engines as CHP units, Heat exchangers, Water to Water heat exchangers, Solar PV, Wind Turbines, Geo thermal, Off-Grid Power, Babington Atomising Burners, Turk Burners, Gasifiers, Wood Gas, SELV, IMAG Motors, PMDC Motors, PWM Motor control, Carbon Neutral Energy Sources and a million more subjects that I have whizzing around my head. Each and every one of them I have enjoyed and revelled in the wonder of it all. I have tried to build some kind of website to document what and how I have managed with each project. Not the best place on the web I know but I am not a web designer but more so an inventor and entrepreneur.

I will be gone for 5 weeks to see what the world has to offer for me. What the future holds I have no idea but what I know is this is something I need to do.

I doubt that HomeBrewPower will continue in the future as I now have new challenges and ideas to work on but if it does I will be bringing it back as a whole new concept..................

I will be dropping some posts in from Australia (Brisbane) to let all my friends and global associates know what I am learning over there and then again some final posts when I get back to the UK some time after October 20th 2008

I hope that you have all picked up something of interest from my ramblings and that one day we can converse once more.

I thank you all for your friendship


Kind regards

Andy Mahoney (10th September 2008 21:58 - The Big Bang Never Happened!!!!)
Home Brew Power!
(Off-Grid Power Installer - UK)
http://www.homebrewpower.co.uk/
Mobile: 07504 50 50 89

HomeBrewPower Yahoo Group On Carbon Neutral Power
http://groups.yahoo.com/group/homebrewpower/


Posted by Picasa

Labels: , , , , ,


Solar-Electric Panels AKA: solar-electric modules, photovoltaic (PV) panels

PV arrays can increase the system’s daily energy output by 25 to 40 percent. PV panels are a solar-electric system’s defining component, where sunlight is used to make direct current (DC) electricity. Behind a PV panel’s shimmering facade, wafers of semiconductor material work their magic,using light (photons) to generate electricity—what’s known as the photovoltaic effect.Other components in your system enable the electricity from your solar-electric panels to safely power your electric loads like lights,computers, and refrigerators.

PV panels are assigned a rating in watts based on the maximum power they can produce under ideal sun and temperature conditions.You can use the rated output to help determine how many panels you’ll need to meet your electrical needs. Multiple modules combined together are called an array.Although rigid panels are the most common form of solar electricity collector, PV technology also has been integrated into roofing shingles and tiles, and even peel and-stick laminates (for metal standing-seam roofs). PV modules are very durable and long lasting


Andy Mahoney

Home Brew Power
Off-Grid Power Installer - UK)
http://www.homebrewpower.co.uk/
Mobile: 07504 50 50 89

HomeBrewPower Yahoo Group On Carbon Neutral Power
http://groups.yahoo.com/group/homebrewpower/

Posted by Picasa

Labels: , , , , , ,


Backup Generator AKA: The gas guzzler

Off-grid solar-electric systems can be sized to provide electricity during cloudy periods when the sun doesn’t shine. But sizing a system to cover a worst-case scenario, like several cloudy weeks during the winter, can result in a very large, expensive system that will rarely get used to its capacity. To spare your pocket, size the system moderately but include a backup generator to get through those occasional sunless stretches.Engine generators can be fueled with bio diesel, waste oils (Including WVO, WMO, Gear Oil) petroleum diesel,gasoline, or propane, depending on the design. These generators produce AC electricity that a battery charger (either stand-alone or incorporated into an inverter) converts to DC energy, which is combustion engines, generators tend to be loud and stinky but a well-designed solar-electric system will require running them only 20 to 100 hours a year.

Kind regards

Andy Mahoney
Home Brew Power
Off-Grid Power Installer - UK)
http://www.homebrewpower.co.uk/

Mobile: 07504 50 50 89

HomeBrewPower Yahoo Group On Carbon Neutral Power
http://groups.yahoo.com/group/homebrewpower/

Posted by Picasa

Labels: , , , , , , , , , , ,



Air Bubbler Oil Lifts are a great way to regulate various fuel supplies for Waste Oil burners, some great examples are the Turk Burner and the Babington Atomizing Burner.

The schematic above shows you hot to construct one from simple materials.

The principle is as follows: Air is supplied at approximately 6 PSI from a simple low pressure air pump (A fish tank air pump is commonly used in home made devises) down a copper tube to a tee piece, the arrangement is submersed in the oil tank / reservoir to allow the bubbles to rise up the outlet tube, as the bubbles rise up the oil filled tube they push up an amount of fuel oil above them. The more air you supply the more oil is driven up with it.

The above principle can be used in so many different burner applications and situations where a controlled and constant amount of oil is required at the burner nozzle / jet. the oil once passed over the burner nozzle that remains unburned can be easily channeled back into the oil sump / tank and recycled.

Note to consider!

As oils become warmer, as they would in the above setup, they become much thinner (Less Viscous) best practise an such a system would be to monitor the fuel oil until your system is up to a stable running temperature i.e. the oil temperature ceases to rise and then set your running air pressure. A Hasty setup on such a system could cost money and indeed lives (Play safe)

Posted by Picasa

Labels: , , , , , , , , , , ,

why make biodiesel. im pretty sure the listers will run on waste cooking oil alone. the cheapest way to start up lowering your bills is to replace light bulbs with cfl bulbs. also, for power, you can buy an old diesel mercedes for under 1,000. pull the engine,sell off the other parts on ebay,hook an old onan generator head to the engine, and run the mercedes on waste cooking oil. use the engines  radiators cooling system to heat the house with. as well as using some thermal transfer to obtain the heat from the exhaust. as for heating without all that, go to tru value/ ace hardware or tractor supply co, get a 55gal drum woodstove conversion kit($35 last winter) and set that up for heat. many of the tree services, especially smaller ones will give you all the wood you want free, especially if you come to their jobsite and load it yourself. if your loading, they will cut to your length for no charge. splitting will be up to you too. if you drive a long
way every day, you could also hook up an extra alternator in your vehicle, buy a few deep cycle batteries and charge them up as you drive. then hook them to a power inverter in the evening and run what you can off them in the evening. you can also build a turk or babbington type waste oil burner to heat home and water with. but research these options very throughly, any of them can have catastrophic failures if your not careful. the absoloute safest way is to heat a small shed away from your house by whatever means.then run airtight ductwork through the shed to heat up the air before it enters your house. or use radiant heat with water for the thermal transfer fluid. i have had some close calls with oil and steam systems. one of my little coil jets overheated,melted the copper tubing and released a huge cloud of superhot vaporised oil into the air. as soon as the fuel/air mix got  right the vapor cloud exploded into a huge fireball. btw, even the
55gal barell stoves are not legal inside a home, but there are lots of them out there, but they can burn through if they get too hot. from the tree services you can also get woodchips free usually. 3-4 dumptrucks of those decomposing with water lines inside them will give you a constant supply of 140f water. there are plans online for building composting bins that use arobic bacteria to decompose the woodchips so you do not create methane gas. using anarobic decomposition will put off methane gas, a flamable greenhouse gas. some systems trap the gas and run heaters off that, or engines. like the city dumps have gone to. a small greenhouse made from black plastic will get amazingly hot inside in the winter,too, car in the sunlight effect. you can put a blower on dual thermostats, and have it blow the air into your house as soon as its warmer in there than inside your house.very little risk factor there. but its useless as an ashtray on a motorcycle for
nightime heating.

 

Labels:

The generator, regardless of size, really needs to be in clean
non-turbulent air. Even with longer blades the wind will contain a
considerable amount of rotation/rolling coming off the trees, or whatever
the obstruction is.

I started flying sailplanes when I was 13, soloed when I was 14 and been
fighting turbulence like that for the last 34 years flying recreationally
from small grass strips that are tree lined. I have to wear cowboy boots
out of necessity sometimes to get up above the tree line.

My air303 is at about 50 feet, runs nice and clean when the wind is out of
the southeast around clockwise to about due west, but to the north and
east I have trees that are slightly taller. THis is a major bummer in the
winter time since all the good stuff tends to come from that direction.
Should have made my tower twice as tall. Even if I had a 2kw wind
generator it would still be useless when the wind is from the norther
directions.

You will get something out of it, but I wouldnt depend on it for power
unless you are a real spartan.

I am according to the government maps on the edge of being in a good area
for wind. problem is those maps are calculated assuming 150 foot towers.

consequently mid summer like now, and mid winter the wind generator pretty
much just sits still. Spring and fall I get some semi-productive amount
but I still couldnt be sufficient on it alone. However, I also have 960
watts of PV.

My father in law just last weekend, who is electrically clueless but
really is impressed that I am so into alternative energy, made the comment
about gee if you just had 2 or 3 more of those wind generators you would
be all set.

At the time the wind generator was sitting there still. My response was,
yep I'd be getting 2 or 3 times as much power as I am now off that one
wind generator, 3 times 0 is still 0

Labels:

If, as the man says in the article below, this is a proven concept,
then it will surely be a boon to all those who have studied the
Rankine Cycle and attempted to design a closed-loop incorporating
it's principles. I am including an excerpt from an article
describing possibly using the Copeland Scroll Compressor, not as a
compressor, but as a Propane vapor-driven motor that will also
(without further modification) drive it's internal induction electric
motor as a 3 phase electric generator. So far, I have not been able
to verify independently that this concept is viable and that anyone
has any long-term experience with the scroll compressors used in this
manner.

QUESTION: Is there anyone out there who knows or knows anyone else
who has personal experience with using a Copeland Scroll Compressor
as part of a Solar/Propane Rankine Cycle Electric Generating
System? If so, please contact me directly at Noble Faubion,
nfaubion@netzero.com because this is all that I am waiting for before
putting my system together (I have a 10 foot parabolic fiberglass
satellite dish and other parts that are just waiting for me to
begin).

BTW, there are several New complete Copeland Scroll Compressors on
EBAY that go for between $200 and $400, which would make this project
feasible without a machine shop. After the excerpt, I have added a
ROUGH outline of how to proceed with this project.
____________________________________________________
The following is a quote from an InterNet article at:
http://www.redrok.com/engine.htm
"Scroll Expander.
Rankine rotary expansion generator.
David Wells and I have discussed the use of these expanders for use
in Rankine engines. Here is my concept. Take a Copeland Scroll
Compressor complete with its 3-phase induction motor almost off the
shelf. This complete assembly is in a sealed metal container. If high-
pressure gas is connected to the expander it rotates and applies
torque to the induction motor. The induction generator can be
directly connected to the power grid.
One disadvantage of using the Copeland unit is the inability to use
steam. The induction generator and bearings are exposed to the
working fluid. Steam will destroy these components. This requires
fluids other than steam.
propane
I have chosen propane as it is low in cost and has about the right
working pressure. Butane or pentane are also candidates. These fuel
gases are a much better choice than the standard refrigerants
primarily because of cost but also because they are non-ozone
depleting gases. The total system must be completely sealed to retain
the gases.
These gases are compatible with refrigeration oils which are used for
scroll and bearing lubrication. The oil is pumped from the low-
pressure sump to the inlet where it passes through the scroll. This
pump operates continuously whenever the expander is turning to
provide lubrication. Some of the oil will pass through the boiler as
dissolved oil in the fluid and return as a mist, which also passes
through the scroll. The boiler must be designed properly to prevent
oil accumulation. One method could be the use of float type oil
separators in low trap sections that let the oil pass through to the
boiler outlet.
A second pump pressurizes the condensate and injects it into the
solar boiler. The quantity of fluid injected is regulated by the
quantity of fluid in the boiler. The objective is to make sure that
the boiler is not so full as to let liquid pass out of the boiler and
into the expander. This would be called liquid slugging and is
detrimental to the expander.
The oil used in the system must be capable of sustained operating
temperatures in excess of 600 F. without deterioration."
__________________________________________________

Rough Outline of a Plan to Build a Solar/Propane Rankine Cycle
Electric Generating System

This plan describes a system that is the closest that one could get
to a turnkey solution as far as I have found. And, the scroll
compressors are cheap enough that one could replace them every 6
months, and still be ahead.
New Copeland Scroll Compressors are offered on ebay and the current
prices are low.

If this is a feasible concept, then here is what I see.

1) One will have a Copeland Scroll Motor/Generator setup ready to
plumb into the system.
2) One would have to have to have a satellite dish probably bigger
than necessary (up to 12 feet diameter) ready to be lined with
aluminized mylar as the reelecting surface and mounted on a pole in
cement in a suitable location---unblocked view of the sun in all
seasons. .
3) Use, as shown in the article above, Propane as the motive medium.
4) Decide how to build a heavily insulated tank, hopefully on a
concrete pad with concrete walls/top in the ground, (this tank does
not have to be pressurized, but if the heat causes any pressure
buildup, it must be vented to atmosphere) to contain the storage
medium and decide whether to use molten salt or mineral oil, or some
other recommended storage medium. I say use molten salt in the
storage tank, and use a mineral oil loop between the solar satellite
dish concentrator and the storage tank as the transferring medium.
5) Then, use another closed loop of liquid Propane passing through a
flash heat exchanger within the molten salt tank to convert the
relatively low-pressure propane into the motive high-pressure propane
gas to power the scroll compressor.
6) Route the pressurized Propane Gas to the inlet (the original
outlet) of the Copeland Scroll Compressor and route the outlet (the
original inlet) to another heat exchanger acting as a
radiator/cooling condenser to cool the propane back into the liquid
state.
7) Add a pump that will force the liquid propane into the propane-
holding tank ready to be fed into the flash heat exchanger within the
high temperature storage tank and the process begins all over again.
8) Use a valve to limit the flow of propane through the Copeland
Scroll Compressor based upon maintaining the desired speed that the
compressor is rotating.
9) A lubricating oil must be found that will withstand the expected
high temperatures (maybe not so high since we will have a much lower
temperature relative to water-to-steam temperatures), then we will
have a viable solution to the lubrication problem.
10) A fairly simple oil trap is all that will be needed, since the
propane vapor can still ingest oil droplets into the scroll
compressor inlet as long as it is a small quantity and does not
become too large. A simple separator trap will minimize the
lubricating oil that would be fed back into the scroll compressor
11) Fabricate the dish tracking system according to the information
we already have.
12) Specify the control valves and fabricate the heat exchangers
using stainless tubing and plumbing techniques.
13) Hook the AC electrical power to an AC-to-AC converter and then
to a Grid Tie Box.

NOTE: Did you notice that machine shop has NOT been mentioned here?
That is all taken care of by this concept. Purchasing plans is not
needed and no machine shop is needed. Just standard shop hand
tools, a drill press and a workbench. And, the rest is just
plumbing in the tubes/pipe/hoses and and wiring the electrical
outputs. Wire up the sensors and controls required, and get a
licensed electrician to wire the AC output to its destination. This
has become the SIMPLEIST SYSTEM WE HAVE FOUND, YET!
Finally, if you know anyone who has experience with converting
Copeland Scroll Refrigeration Compressors to a Copeland Scroll
Propane Motor/Generator, get them in contact with me at
nfaubion@netzero.com

Labels:

Spent most of my life as a electronic design engineer. Switched to 3d
animation about 8 years ago, in business as well. But hold a life long
interest in science, engineering, nanotechnology and energy (solar,
wind, space ).

I got interested in hydroxy about six months ago, absorbed a lot to
come up to speed. Intended to install a system in my car but the
problem there is small since I only fill the tank every 60 to 90 days.
Yeah, weird but I work at home :-) But then wind and sterling engines
caught my interest and that seemed to be a solution to a real problem
since I hate paying for electricity while all that sunshine goes to
waste.

Stirling engines are really cool. The problem is you can make a toy or
you can buy a 25kwatt unit but there is nothing in between and no
plans available to build anything over 100 watts. I understand why. It
is almost impossible to build these things. It's like building a car
engine from scratch. Mills, CNC machines, castings, precision custom
parts, welding, and the experience of a machinist. A few guys have
built machines but they had all those tools and exerience. I basically
decided I would never be able to build a significant unit (500 watt)
on my own. I was going to buy a $45 weed wacker and use the cylinder
as the power piston of a beta stirling. Would have been lucky to get
10 watts out of it.

Then I tuned into thermoacoustic engines and that is my present goal.
At least to see if I can understand them. The difference between them
and a stirling is the lack of moving parts. I figure I can build
something if it is just a set of pipes, plates, bolts, and drilled
holes. We shall see. But the idea that you could build a 30 pound
device that had a linear power generator (the only moving part) on one
end and heat one end and out comes electricity, is very attractive.

The high tech end of the scale has guys getting patents on devices
that can handle 750 watts in a package the size of a brief case. I
can't build the high tech end, but I think anyone could build the
middle tech level of these devices. Lower efficiency but easy to
build. We shall see. Will take a while.

.


__,_._,___

Labels: