I was wondering how solar powered houses store energy when the sun is not out? What is the device called that actually stores the energy?

That all depends on how you are collecting solar energy.

If you are using solar panels that convert sunlight into electricity, then the energy is stored in what are called deep cycle batteries. It takes a few of these batteries wired together. All the batteries you have wired together that store electricity are called a battery bank.

Your battery bank will store electricity so that you can use that electricity when there is no sun.

If you are using a solar heater that heats water, then the hot water is stored in insulated tanks that you can use later when the sun is not out.

Technorati Tags: battery bank, deep cycle batteries, solar energy, solar heater, solar panels, solar powered houses, store electricity, store energy

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This is an amazing video of how sunlight can be used to run an old fashion stirling engine simply by adding a very small modification to the stirling engine.
Duration : 0:3:24

Read the rest of this entry »

Technorati Tags: alternative energy, energy, ENGINE, Free, FRESNEL, generator, global, green, LENS, MOTOR, motor generator, oven, power, power alternative, renewable, SCIENCE, solar, solar power, solar stirling engine, STERLING, STIRLING, stirling motor, sun energy, sun power, warming

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007 isn't generally known for being friendly to anything except the ladies. So being friendly to the Earth certainly hasn't ever mattered. The question is, now that green-tech is awesome, and green-style is sexy, what's a Bond to do?

Quantum of Solace seems to take two stances on the issue.

First, green chic is lame. The lead villain of the movie (who shares my last name, unfortunately) is beyond greenwashing. His energy company has been pretending to buy up ecologically sensitive areas, but really he's trying to control the world's water. Sounds like a page out of T. Boone's playbook to me.

And as Greene tries to raise money for his faux-organization, we see the private-jet-flying, schmoozy, evening-balling lameness that I know exists (but have yet to be invited into...for some reason.) Daniel and Olga look smashing, of course, but you can see right through the facade. It's just another reason for rich people to get together and celebrate how rich they are.
Anyone in the movie who appears to give a crap about the environment for it's own sake isn't just full of themselves, they're also the kind of person who is likely to dine on Florida Panther just because it's hard to get. The message is clear, this "being green to be cool thing" is over, in the eyes of Bond. And Bond is the leader of cool, as far as a lot of the world is concerned.

On the other hand, clean technologies suddenly start looking pretty damned cool. A half-Russian, half-South American Bond chick cruises around in a Ford Ka. It's likely that you've never heard of the Ka because they don't sell them in America. But it's basically Ford's answer to the Smart Car. A little larger, but ultra-cheap and it gets 38 mpg.
Bond starts out the movie completely destroying a 13 mpg Aston Martin, showing the kind of distaste toward that obsolete technology as an EcoGeek might expect. While, in the end of the film, he's treating his new hydrogen-powered Ford Edge like a baby, because he obviously loves the technology so much.

The Ka and the Edge are genuine examples of the kind of technology that might one day make our lives and the world a better place. It's a long way from exploding cuff links, and a long way in the right direction, as far as EcoGeek is concerned.

Source: EcoGeek.com

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This article will teach you the basics of solar power for producing your own electricity.

It is easy to confuse solar power for the production of electricity, with solar to produce heat. They are different topics. Solar power uses photovoltaic cells to produce electricity called solar panels or PV panels. These panels release electricity when sunlight strikes them. In contrast, a solar heater uses the sun to actually heat water or air flowing through it and it has nothing to do with electricity and PV panels.

Solar panels are pointed at solar south in the northern hemisphere and solar north in the southern hemisphere. Solar north and solar south are a little different than magnetic compass north and south.

The sun strikes the PV panels which creates an eletrical charge which is directed to the output terminals which product DC (direct current) somewhere between 6 and 24 volts depending on the solar panels. Most solar panels are set to output 12 volts.

The total amount of solar power produced by your system is based on what is called Peak Sun Hours. Peak Sun Hours represent the average amount of sun available per day throughout the year for your specific locality.

It is estimated that at "peak sun", 1000 W/m² of power reaches the surface of the earth. One hour of full sun provides 1000 Wh per m² = 1 kWh/m² - representing the solar energy received in one hour on a cloudless summer day on a one-square meter surface directed towards the sun.

The daily average of Peak Sun Hours is used for calculation purposes in the design of the system. To see the average Peak Sun Hours for your area in the United States, go to the solar power calculator at http://www.mysolarsecret.com/solar-power-calculator.html and select the city nearest you under the wording "Select the city nearest you for the number of hours per day of sun" about half way down the page. Follow your eyes across the webpage to the box on the right side of the screen to see the Peak Sun Hours for your area.

Components You Will Need In Your Solar Power System

The four primary components for producing electricity using solar power, which provides common 120 volt AC power for daily use are: Solar panels, charge controller, battery and inverter. Solar panels charge the battery, and the charge regulator insures proper charging of the battery. The battery provides DC voltage to the inverter, and the inverter converts the DC voltage to normal AC voltage.

Solar Panels

The output of a solar panel is usually stated in watts, and the wattage is determined by multiplying the rated voltage by the rated amperage. The formula for wattage is VOLTS times AMPS equals WATTS. So for example, a 12 volt 60 watt solar panel measuring about 20 X 44 inches has a rated voltage of 17.1 and a rated 3.5 amperage.

V x A = W
17.1 volts times 3.5 amps equals 60 watts

If an average of 6 hours of peak sun per day is available in an area, then the above solar panel can produce an average 360 watt hours of power per day; 60w times 6 hrs. = 360 watt-hours. Since the intensity of sunlight contacting the solar panel varies throughout the day, we use the term "peak sun hours" as a method to smooth out the variations into a daily average. Early morning and late-in-the-day sunlight produces less power than the mid-day sun. Naturally, cloudy days will produce less power than bright sunny days as well. When planning a system your geographical area is rated in average peak sun hours per day based on yearly sun data. Average peak sun hours for various geographical areas is listed on the solar power calculator webpage at http://www.mysolarsecret.com/solar-power-calculator.html

Solar Panels For Sale

25 Watt Folding Solar Panel

15 watt Solar Panel

10 WATT SOLAR PANEL FRAMED

15 WATT SOLAR PANEL FRAMED

25 WATT SOLAR PANEL FRAMED

Solar Panel 18-Watt 12-Volt Deep-Cycle Battery Charger

Solar 18-Watt 12-Volt Charger

13 Watt General Purpose Solar Module

Bird-X - SOLPAN2-CRTTR - CritterBlaster Pro Solar Power Panel Accessory - Black - 37 L x 15 W in.

ROOF/GABLE SOLAR PANEL (Ventamatic VXSOLARPANEL)

Sunsei SE-16000 Solar 260-Watt 16.5-Volt Charger

Sunsei SE-24000 Solar 400-Watt 16.5-Volt Charger

Sunsei SE-4000 Solar 65-Watt 16.5-Volt Charger

Sunforce 15-watt Solar Charger with 7-amp Charge Controller

60 Watt Solar Panel with 7 Amp Charge Controller, Model# 37015

10 Watt Black Frame Mono-crystalline Solar Panel and Battery Charger

20 Watt Black Frame Mono-crystalline Solar Panel and Battery Charger

40 Watt Black Frame Mono-crystalline Solar Panel and Battery Charger

Learn About Wiring Solar Panels And Batteries

There are three types of wiring configurations that are relatively easy to learn. Once mastered, the job of wiring batteries or solar modules becomes easy as pie. The three configurations are:

Series wiring
Parallel wiring
And a combination of the two known simply as series/parallel wiring.

Solar panels can be wired in series or in parallel to increase voltage or amperage respectively, and they can be wired both in series and in parallel to increase both volts and amps. Series wiring refers to connecting the positive terminal of one panel to the negative terminal of another. The resulting outer positive and negative terminals will produce voltage the sum of the two panels, but the amperage stays the same as one panel. So three 12 volt/3.5 amp panels wired in series produces 36 volts at 3.5 amps. Four of these wired in series would produce 48 volts at 3.5 amps.

Wiring Solar Panels In Series

To wire any device in series you must connect the positive terminal of one device to the negative terminal of the next device.

Wiring Solar Panels In Parallel

Parallel wiring refers to connecting positive terminals to positive terminals and negative to negative. The result is that voltage stays the same, but amperage becomes the sum of the number of panels. So three 12 volt/3.5 amp panels wired in parallel would produce 12 volts at 10.5 amps. Four panels would produce 12 volts at 14 amps.

Wiring Solar Panels In Series and Parallel

Series/parallel wiring refers to doing both of the above - increasing volts and amps to achieve the desired voltage as in 24 or 48 volt systems.

You might be asking why in the world would someone want to put them self through wiring both in series and in parallel? Let's say that you want to increase the Amp hour rating of a battery pack so that you could run your appliances longer but you needed to wire the pack in such a way as to keep the battery pack at 12 volts, or you want to increase the charging capacity of your solar array but you needed to wire the solar modules in such a way as to keep the solar array at 34 volts, well, series/parallel wiring is the only way to do that.

Charge Controller

A charge controller monitors the battery's state-of-charge to insure that when the battery needs charge-current it gets it, and also protects the battery from being over-charged. Connecting a solar panel to a battery without a regulator seriously risks damaging the battery and can cause a hazard.

Charge controllers (or often called charge regulator) are rated based on the amount of amperage they can process from a solar array. If a controller is rated at 20 amps it means that you can connect up to 20 amps of solar panel output current to this one controller. The most advanced charge controllers utilize a charging principal referred to as Pulse-Width-Modulation (PWM) - which insures the most efficient battery charging and extends the life of the battery. Even more advanced controllers also include Maximum Power Point Tracking (MPPT) which maximizes the amount of current going into the battery from the solar array by lowering the panel's output voltage, which increases the charging amps to the battery - because if a panel can produce 60 watts with 17.2 volts and 3.5 amps, then if the voltage is lowered to say 14 volts then the amperage increases to 4.28 (14v X 4.28 amps = 60 watts) resulting in a 19% increase in charging amps for this example.

Many charge controllers also offer Low Voltage Disconnect (LVD) and Battery Temperature Compensation (BTC) as an optional feature. The LVD feature permits connecting loads to the LVD terminals which are then voltage sensitive. If the battery voltage drops too far the loads are disconnected - preventing potential damage to both the battery and the loads. BTC adjusts the charge rate based on the temperature of the battery since batteries are sensitive to temperature variations above and below about 75 F degrees.

Charge Controllers For Sale

Solar Charge Controller for solar/wind generator/Wind Turbine - 45 amps

Solar Charge Controller for solar/wind generators - 60 amps

Solar Controller 12-Volt Battery Charge Monitor

10 Amp Solar Charge Controller

15-watt Solar Charger with 7-amp Charge Controller

4.5 amp 12 volt Solar Charge Controller Regulator by Morningstar

4 Amp solar charge controller - CDT-C4 regulator 12V #35004

20 Amp Solar Charge Controller with Digital Display

Sunsei SE-CC25000 25 Amp Solar Charge Controller

60 Watt Solar Panel with 7 Amp Charge Controller, Model# 37015

Sunforce Digital Charge Controller - 10 Amp, Model# 600311

Xantrex Charge Controller for DC Charging Sources - 40 Amp, Model# C40

Xantrex Charge Controller for DC Charging Sources - 35 Amp, Model# C35

Xantrex Charge Controller for DC Charging Sources - 60 Amp, Model# C60

I hope you are well on your way to designing your own homemade solar power system from reading this article. If you need additional help in the form of an easy, step-by-step guide on exactly what parts you need to buy and how to connect the parts together see the top two solar panel how to guides that I reviewed at http://www.mysolarsecret.com

Battery

The Deep Cycle batteries used are designed to be discharged and then re-charged hundreds or thousands of times. These batteries are rated in Amp Hours (ah) - usually at 20 hours and 100 hours. Amp hours refers to the amount of current - in amps - which can be supplied by the battery over the period of hours. For example, a 350ah battery could supply 17.5 continuous amps over 20 hours or 35 continuous amps for 10 hours. To quickly express the total watts potentially available in a 6 volt 360ah battery; 360ah times the nominal 6 volts equals 2160 watts or 2.16kWh (kilowatt-hours). Like solar panels, batteries are wired in series and/or parallel to increase voltage to the desired level and increase amp hours.

The battery should have sufficient amp hour capacity to supply needed power during the longest expected period "no sun" or extremely cloudy conditions. A lead-acid battery should be sized at least 20% larger than this amount. If there is a source of back-up power, such as a standby generator along with a battery charger, the battery bank does not have to be sized for worst case weather conditions.

The size of the battery bank required will depend on the storage capacity required, the maximum discharge rate, the maximum charge rate, and the minimum temperature at which the batteries will be used. During planning, all of these factors are looked at, and the one requiring the largest capacity will dictate the battery size.

Deep Cycle Batteries For Sale

Basement Watchdog Deep Cycle Battery (30HDC140S)

Glen Tronics B-1000 Standby Deep Cycle Battery

Glen Tronics B-2200 Standby Deep Cycle Battery

MK Deep Cycle Gel Cell 12 Volt Battery for Backup Sump Pumps

Powerstar 12V 33AH Group U1 Deep Cycle Sealed Battery

Optima Blue Top D34M High-Power Deep-Cycle Battery (870CA)

Optima Dual Post 750 CCA Deep Cycle Marine Battery

Inverter

An inverter is a device which changes DC power stored in a battery to standard 120/240 VAC electricity (also referred to as 110/220). Most solar power systems generate DC current which is stored in batteries. Nearly all lighting, appliances, motors, etc., are designed to use ac power, so it takes an inverter to make the switch from battery-stored DC to standard power (120 VAC, 60 Hz).

In an inverter, direct current (DC) is switched back and forth to produce alternating current (AC). Then it is transformed, filtered, stepped, etc. to get it to an acceptable output waveform. The more processing, the cleaner and quieter the output, but the lower the efficiency of the conversion. The goal becomes to produce a waveform that is acceptable to all loads without sacrificing too much power into the conversion process.

Inverters come in two basic output designs - sine wave and modified sine wave. Most 120VAC devices can use the modified sine wave, but there are some notable exceptions. Devices such as laser printers which use triacs and/or silicon controlled rectifiers are damaged when provided mod-sine wave power. Motors and power supplies usually run warmer and less efficiently on mod-sine wave power. Some things, like fans, amplifiers, and cheap fluorescent lights, give off an audible buzz on modified sine wave power. However, modified sine wave inverters make the conversion from DC to AC very efficiently. They are relatively inexpensive, and many of the electrical devices we use every day work fine on them.

Sine wave inverters can virtually operate anything. Your utility company provides sine wave power, so a sine wave inverter is equal to or even better than utility supplied power. A sine wave inverter can "clean up" utility or generator supplied power because of its internal processing.

Inverters are made with various internal features and many permit external equipment interface. Common internal features are internal battery chargers which can rapidly charge batteries when an AC source such as a generator or utility power is connected to the inverter's INPUT terminals. Auto-transfer switching is also a common internal feature which enables switching from either one AC source to another and/or from utility power to inverter power for designated loads. Battery temperature compensation, internal relays to control loads, automatic remote generator starting/stopping and many other programmable features are available.

Most inverters produce 120VAC, but can be equipped with a step-up transformer to produce 120/240VAC. Some inverters can be series or parallel "stacked-interfaced" to produce 120/240VAC or to increase the available amperage.

Inverters For Sale

Xantrex Technologies 851-0400 XPower Plus 400-Watt Inverter

Xantrex Technologies 851-0178 XPower 175-Watt Micro Inverter

Cobra CPI 475 400 Watt Power Inverter

Jensen JP30 300 Watt Power Inverter

Duracell DC to AC Pocket Power Source Inverter 175 Watt #813-0291-07

Cobra CPI 1575 3000 Watt 12 Volt DC to 120 Volt AC Power Inverter

Cobra CPI 875 1600 Watt 12 Volt DC to 120 Volt AC Power Inverter

Xantrex Technologies 851-0700 XPower Plus 700-Watt Inverter

Belkin F5C400-300W 2 Outlet Dc/Ac Inverter

Vector VEC024BCA 400-Watt Inverter with Case

XANTREX XPOWER POWERSOURCE MOBILE 100 852-0281

Xantrex Technologies 852-0400 XPower PowerSource 400-Watt Portable Inverter

Xantrex Technologies 852-2071 Xpower AC/DC Powerpack Solar With 400 Watt Inverter, Two AC Outlets, USB Port, And Digital Display

Xantrex Technologies 851-0401 XPower Plus 400-Watt Inverter

Tripp Lite PV375 PV 375W 12V DC to AC Portable Inverter with DC Auto Power Outlet

Tripp Lite PV150 PV 150W 12V DC to AC Portable Inverter with DC Auto Power Outlet

Duracell 852-0281-07 DC to AC 100 Watt Inverter & 4.0 Amp/Hour Lithium Ion Mobile Power Source

Cobra CPI 2575 5000 Watt 12 Volt DC to 120 Volt AC Power Inverter

Solar #PI4000X - 400 W Power inverter

I hope you are well on your way to designing your own homemade solar power system from reading this article. If you need additional help in the form of an easy, step-by-step guide on exactly what parts you need to buy and how to connect the parts together see the top two solar panel how to guides that I reviewed at http://www.mysolarsecret.com

Technorati Tags: battery bank, charge controller, controller regulator, dc charging, deep cycle batteries, deep cycle battery, INVERTER, inverters, kwh, peak sun hours, photovoltaic cells, production of electricity, pv panels, solar, solar energy, solar panels, solar power, wiring solar panels, wiring solar panels in parallel, wiring solar panels in series

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If you have minimal mechanical skills, you can do your own gasoline to electric car conversion for about $7,000. This electric car has zero emissions and still has enough power to peal out or do 75 MPH on the highway. The car will go 40 miles on one charge, more than enough for local errands like driving to work, picking up the kids from school, or going grocery shopping. The lead-acid batteries in your battery bank need to be replaced about every 25,000 miles.

If electric vehicles are so easy to build, cheap to run, and fun to own, why are we all not driving them? Why have today's auto manufacturers abandoned electric vehicles in favor of hybrids which deliver less performance with greater complexity at a high price while still spitting out greenhouse gases from their tailpipes?

All you need to do an electric car conversion is eight 12-volt lead-acid deep cycle batteries, a forklift truck motor and controller, recharging module, DC-DC converter, mounting hardware, and drivetrain coupler. Total cost including batteries is $7,000 (see images below).

For the easiest, step-by-step instructions on the web go to http://www.mysolarsecret.com/electric-car/

Technorati Tags: battery bank, dc dc converter, deep cycle batteries, electric car conversion, electric vehicles

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On the first day of the LA Auto Show BMW Group's MINI division made the world Premiere of their much anticipated MINI-E electric car. While the car is not yet ready to be put into production, MINI will be releasing 500 units on lease to drivers in California and New York in order to study the car's performance in the real world. If you want to sign up for the possibility of getting one of these leases, visit the MINI-E website and sign up.

MINI emphasized that this car was not a mere design study, but was ready to go into production after some important feedback from real life usage and some tweaking of the function of the car. The company also stressed the need for a better electric charging infrastructure in the United States, while at the same time noting that in the case of electric vehicles it was possible for technology to precede infrastructure. This means that although a network of charging stations across the country would facilitate the use of electric cars, the lack of that network doesn't make EVs useless.

To debut the car, the Deputy Mayor of Los Angeles was brought out on stage and taken for a test drive. Unlike many of the other presentations, the MINI unveiling seemed a bit more friendly during the awkward silence when the very long charging cord was being wound up. Then came the test drive, where the Deputy Mayor and her driver drove off stage for about 15 seconds, at which point the presenter asked the audience, "Did you hear anything?"

The obvious answer was no. Even though the MINI-E packs a 150 kW motor, can do 0-60 in 8.5 seconds, and tops out at 95 mph, it didn't make a sound as it rolled off of the stage. To underline the efficiency of their new offering, MINI pointed out that the car could drive 5.5 miles on just 1kW (about 10 cents) of energy. When was the last time you could drive 50 miles for under a buck?

Source: http://www.ecogeek.org/

Technorati Tags: ecogeek, efficiency, electric car, electric cars, la auto show

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On Wednesday at the LA Auto Show Honda rolled out its new Eco-Assist fuel economy enhancement technology and slapped it on the Honda Insight. EcoGeek reports that this technology is hot on the heels of other manufacturers that have been releasing detailed fuel economy displays on their hybrid cars, and should be very competitive with these other products.

The Honda Insight will come equipped with the new Eco-Assist display in the spring of 2009 when the Insight first goes on sale in the United States.

Honda claims that the Eco-Assist is more than just a display, "...it's a full fuel economy enhancement package. Besides the scoring function, which rates how you drive and encourages more economic driving, Eco-Assist offers and ECON mode, which tweaks the drivetrain to be even more fuel efficient. Perhaps the most visible and interesting feature is the speedometer background, which glows a certain color depending on how you're driving. This gives you instant feedback without the trouble of trying to read an extra set of numbers off the dash."

Honda hopes this feature will help drive sales of the Insight, which will sell for $18,500.

Source: http://www.ecogeek.org/

Technorati Tags: ecogeek, fuel economy, honda, honda insight, hybrid cars

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Does anyone know how to build a wind generator for a sailboat? I am looking for plans for a small 24" three blade wind generator ?

This manual is based on using a 260 VDC, 5 A continuous duty Treadmill Motor with a 6 inch threaded hub. These motors are available for under $50 from most motor surplus stores. We are getting about 7 amps in a 30 mph wind. In other words, it is a simple, cheap little machine to get you started.

"ASSEMBLY
1.Place the motor on top of the square tubing & bolt it in, using the two 5/16” x ¾” bolts.
2.Place the diode on the square tubing, about 2” behind the motor, & screw it into position using the self-tapping metal screw.
3.Connect the black wire coming out of the motor to the positive incoming terminal of the diode (Labeled AC on the positive side).
4.Connect the red wire coming out of the motor to the negative incoming terminal of the diode (Labeled AC on the negative side).
5.Center the tail over the square tubing, at the back end. Clamp your tail onto the side of the square tubing.
6.Using 2 self-tapping screws, screw the tail in place.
7.Place each blade on the hub so that all the holes line up. Using the ¼" bolts & washers, bolt the blades to the hub. For the inner three holes, use two washers per bolt, one on each side of the blade. For the outer three holes, just use one washer next to the head of the bolt. Tighten.
8.Hold the end of the shaft of the motor (which comes through the hub) firmly with pliers, & turn the hub counterclockwise until it tightens & stops.
9.Screw the nipple tightly into the floor flange using a pipe wrench.
10.Clamp the nipple in a vice so that the floor flange is facing up & level.
11.Place the square tubing (and everything that is on it) on top of the floor flange & move it so that it is perfectly balanced.
12.Through the holes of the floor flange, mark the square tubing at the point of balance.
13.Drill these two holes using a 5/32" drill bit. You will probably have to take off the hub & tail to do this).
14.Attach the square tubing to the floor flange with two sheet metal screws.
For a longer life span of your wind generator, you should paint the blades, motor sleeve, mount & tail."

Source: Dan Martin
www AGUA-LUNA com

Technorati Tags: sailboat, wind generator

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I am looking into building my own wind generator but I don't know the right batteries I should use. Any help would be appreciated.

You are looking for what are called deep cycle batteries, not car batteries. The difference between deep cycle batteries and car batteries is that deep cycle batteries contain solid lead and can withstand losing almost all of their charge and then be re-charged over and over again much better than car batteries. Car batteries will explode or just stop working when you run them down and charge them again about 10 times. As you can image, with solar panels connected to a battery bank, you need batteries that can be drawn down and then re-charged again hundreds of times.

Technorati Tags: battery bank, car batteries, deep cycle batteries, deep cycle battery, solar panels, wind generator

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Hi I am a high school student and I have to build a model solar home for my engineering project. The house needs to be pretty big with working lights and fans. I also have to be able to store the energy. And i am having loads of trouble figuring out how to do it...can anyone help me??

No problem, you will get an A if you follow my recommendations. First, use the solar power calculator on this website and select the number of lights and fans that your model solar home needs to have. You will get an estimate of how many solar panels you will need to accomplish the job. Down at the very bottom of the solar power calculator page is a link that will take you to easy, step by step plans for how to build a solar power system that will power the lights and fans that you selected. If you choose energy efficient lights and a small fan, you should be able to build all the solar components of your house for about $200. The solar power calculator is at http://www.mysolarsecret.com/solar-power-calculator.html and the link to the plans are at http://www.mysolarsecret.com/ (or just use the link at the bottom of the solar power calculator page).

Technorati Tags: energy efficient lights, solar components, solar home, solar panels, solar power system

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