solarray

From void into vision, from vision to mind, from mind into speech, from speech to the tribe, from the tribe into din.

Monday, May 12, 2008

Solar IS Civil Defense, Illustrated



Solar IS Civil Defense
Like this solar LED light and AA battery charger


or this solar/dynamo am/fm/sw radio, similar to the ones US and NATO forces have distributed in Afghanistan.

Solar IS Civil Defense
and, after all,
we are at war.


Solar IS Civil Defense
a flashlight, radio or cell phone, an extra set of batteries
solar powered
with hand or foot operated dynamo back-up,
emergency lighting and communication
day or night
from sunlight or
muscle power.

One solar component
is an LED flashlight
which also charges AA batteries.
This design allows for
battery switching,
charging a second set of batteries
to use in other devices.

The Bogolight is a charger and light
with an international development
addition:
each light bought
buys another solar LED light and battery charger
for someone who has no access to electricity
in this world.

Solar IS Civil Defense in another way.


US and NATO forces have distributed
solar/dynamo am/fm/sw radios
in Afghanistan.

Those solar/dynamos could easily charge
AA batteries
and establish a low power DC grid
through battery switching.
This level of survival electricity
would raise the standard of living
for most Afghanis,
helping to rebuild their lives
as well as their country and economy.

This circuit diagram is one way
to add this capability to the present
solar/dynamo radios now in Afghanistan.

solar/dynamo battery charger circit diagram

The image I have is of a
solar swadeshi, hand-made electricity.
Instead of turning the handle
of the charkha spinning wheel
making thread
for khadi cloth
an hour a day as Gandhi did,
turning the crank of a dynamo a half hour a day,
the direct production of survival power
for yourself, your family, and your community,
swadeshi, local production.

How did Gandhi's Pashtun colleague,
Badshah Khan practice it?
And could his example
help bring peace back
today?

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Monday, January 14, 2008

My Solar Christmas

As a Christmas gift, I donated solar ovens to people in the refugee camps around Darfur. For the people there, who are at risk every time they have to leave the camp to seek scarce fuel, a solar oven can mean survival.

Jewish World Watch sends two solar ovens to the Iridimi and Touloum refugee camps in Chad for $30.

There are other solar oven programs as well.

This video from German CARE is especially close to my heart because it shows a woman in one of the 3 international displaced person camps they run in Easten Chad using a solar oven and a "haybox" or retained heat cooker to prepare a meal.



The haybox is simply an insulated box into which you place a hot pot. The heat has nowhere to go but into the food. You can also use a stone as a heat reservoir: heat the stone, place it in the box with a pot of food, cook. It's an old, old technique updated with solar. I love these ancient solutions to common problems.

Here's another youtube report on a solar cooker workshop held in Nyala, Sudan under the auspices of the Darfur Peace and Development Organization.



I also gave the gift of bees and trees as I do every year through Heifer International. Donate bees, trees, rabbits, geese, chickens, goats, as well as heifers to a project from their catalog somewhere around the world, including the US, in the names of your loved ones.

I like to give bees because they are all about pollination and improving agricultural production. Investment in pollination in these days of colony cluster disease is especially important.

I like trees because they are also a carbon offset. I've given a decade and more's worth of 60 trees a year to Heifer International. That should do something to absorb some of the carbon my energy use has released to the atmosphere.



Last but certainly not least, I also gave a few solar LED flashlights and AA battery chargers to friends and family. These Bogolights are very well designed with one button (on and off) and one screw to secure the battery bay. There's even a phosphorescent band so you can find the flashlight in the dark. They work as reading lights too. I know because I tried them out. They also use standard AA rechargeable batteries and allow for battery switching, charging one set of batteries while using another set in a second device.

Bogo means "buy one, give one" by which they mean, you spend $25 to buy one for yourself and the company sends a second to somebody in the developing world. You can even choose where and what program. A good deal.

I gave these solar flashlights because

Solar IS Civil Defense

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Wednesday, April 18, 2007

Invisibility of Solar Power

We swim in sunlight and solar power every day and every minute of daylight. We just don't recognize it as btu's, lumens, or watts. We don't count the calories in our solar diet and include no accounting in our energy budget for all the sunlight we already use.

Part and parcel of this invisibility is our inability to see actual working solar when it is right in front of our eyes. Probably the most common solar electric device around your town is the portable electric sign powered by PV panels. It's that orange thing behind the tree.



Can you see the PV panels on this health center in Brookline, MA? Would you recognize it as solar, glancing up from the street or your car window as you passed by?



This is the Porter Square Shopping Center in Cambridge, MA. The story I heard, is that the owners, one of whom was John O'Connor, author of _Who Owns the Sun?_ and an environmental activist, wanted people to see the PV panels so they raised them up on steel girders, an investment more costly than the panels themselves. I always thought they should have included some legend on the steel like "Solar Energy at Work" or "Solar Energy Works!" I think that might be a good idea on other public solar installations too. [The Porter Square Shopping Center has a geothermal heating system in addition to PV solar.]




This is one of those poles with PV panels you can see by the side of many highways. They are monitoring traffic, counting cars, sending congestion alerts. I've seen some powering emergency equipment too. They are all over the place once you recognize them.


This trash container is a solar powered trash compactor. They were invented in Jamaica Plain and Boston is testing out 50 around the city. This one is in Davis Square in Somerville. The first one I saw was on Spectacle Island last summer.



Boston is also trying out solar powered parking meters. As a bicyclist, I think there are still some design issues to be worked out.

Keep your eyes open. At least when the sun is shining.

Cross-posted at dailykos as an entry in my diary there.

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Friday, February 09, 2007

Minimum Solar Light



Combine one of the new powerful LED lights powered by a couple of CR2032 button batteries like the Energizer Trim Flex LED with a solar panel from a novelty solar hat fan or one of the PV chips from a solar education kit, connect them together, possibly with a IN4003 blocking diode between the solar panel and the batteries to prevent electrical discharge through the panel at night (correct me if I'm wrong), and you have an effective solar rechargeable light suitable for reading.

There is a button battery solar charger which works fairly well. There is also the Micro Solar LED which I have not tried yet. You can also buy rechargeable button batteries and AC chargers.

I'd like to see solar light as available and affordable as a disposable cigarette lighter anywhere and everywhere around the world. Right now the price for this level of solar light is between $20 and $10. Commodity production and pricing should bring that down to $5 to $1.


Solar PSAs
http://www.youtube.com/profile?user=gmoke

Solar Experiments
http://solarray.blogspot.com/2006/03/solar-video.html

Interviews and Site Visits
http://energyvision.blogspot.com

Crossposted to http://gmoke.dailykos.com


Solar IS Civil Defense

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Thursday, December 09, 2004

Three Solar Projects

1. Solar Product Chain

I want to make a series of steppingstone products to full solar electric power:

solar powered LED light - flashlight, keychain or backpack fob
solar jewelry - rings, bracelets, necklaces, with solar charging brooch and rechargeable battery pack
solar bicycle light (for visibility)
This set of products uses button batteries, CR2016 and CR2032 size and hearing aid batteries, for instance. The simplest system is a solar cell, with a blocking diode, a set or rechargeable batteries, and a single LED

solar/dynamo flashlight/radio and battery charger
The charger works on AA and other dry cell sizes, possibly up to 12 volts. A radio and flashlight are what is recommended in case of emergency and disaster. If the extra set of batteries is rechargeable, the solar/dynamo system can produce electricity day or night by sunlight or muscle power as long as the batteries can carry a charge.

solar car battery charger (one square foot)
12 volt (and multiples)
Every car can become a "hybrid vehicle" by installing an extra battery and a control system to charge from the alternator when the engine's battery is finished. Battery switching, with 12 volt or dry cell or even button batteries is a key concept in the solar transition.

one window solar electric system (four square feet)
12 volt, with AC inverter and possible grid connect
The one window system is 4 square feet of solar collector and should be almost as easy to install as an air conditioner. Open the window, erect the frame, aim it at the sun, attach collector, plug it in, and close the window.

There should be a consistent look and feel to all the products along the product chain and as much inter-operability as possible.



2. Your Southernmost Window

A series of half hour programs for TV, videotape, DVD and other digital media

What you can do with one south-facing window, or how to live within a solar budget, including designs viewers can replicate at home to provide heat, light, ventilation, and/or stimulate ecological growth.

Program 1. What You can See from a Window - one square foot of sunlight, orientation to the sun, design principles, window types, glazing, heat loss, infiltration, insulation, heating ventilating and air conditioning (HVAC), air purification, breathing

Program 2. Every Window in the House - window types take 2, radiation and convection, caulking and weatherstripping, drafts and infiltration, how to chart your airflows, how to use them, window insulation, whole house HVAC

Program 3. The Electric Window - solar electricity/photovoltaic/PV, small battery charger, solar/dynamo flashlight radio, one window systems, permanent emergency capacity, battery switching and your car

Program 4. Hot and Cold Windows - windowbox heaters, passive and active ventilators, advanced airflow usage, active and passive water heating, your northernmost window, a nod towards refrigerators and low heat differential heat pumps

Program 5. The Greenhouse Window - windowsill gardens, bubbling out/bubbling in, heat storage, aquaculture, vermiculture, and ecological housekeeping, the neighborhood

Program 6. Most Windows in Town -what if everybody did it?, the economics of sunlight, systems thinking from community to region to country to world, globalization of solar physics



3. Mister Franklin's Folks

Mister Franklin’s Folks began when a small group of people decided to bring a solar fountain to the local farmers markets, swap meets, and outdoor community events and began to generate public power. Each week, they’d float the solar electric panel and pump the water in a tub and the little fountain would splash and spray. The brighter the sunshine the higher the water would go. Children loved to turn it on and off with their shadows, jumping into and out of the sunlight, making the water dance and themselves laugh. Older kids asked questions and so did some of the adults.  “What’s it for?"  "How does it work?"  "Why are you doing this?"  "So what?”

The exhibit was labeled, “Solar Fountain/Wishing Well” and some coins lay at the bottom of the tub. There was a big can labeled “Donations” on the table under the shade of an awning or umbrella where one of Franklin’s Folk sat with a portable computer and a collection of books, pamphlets, leaflets, cards, and stickers. The car, van or truck parked behind them was full of working models and public experiments, product demos and testing equipment. The computer had a wireless connection to the Internet and could print out paper copy or otherwise transfer the information. For a donation.

Each week, from Memorial Day to the week before Thanksgiving, throughout the farmers market season, they’d be there. Each week, they’d set up the solar fountain and present a different demonstration of solar ingenuity and practical power. When they said "Power to the people," they meant it literally.

The Franklin Folk said “Your south-facing window is already a solar collector and we can show you how to use it.” They provided designs and projects that began by caulking and sealing a window and ended with a complete one room HVAC and electrical system for daily and/or emergency use.

They liked the little solar/dynamo radio/flashlights that were around then. “A solar/dynamo and a set of rechargeable batteries is a perpetual source of personal AA electrical power - at least until the batteries wear out. You should have power as long as the sun keeps shining, you can turn the hand crank, and the batteries hold a charge. And when the batteries die, all you have to do is go out and buy some new ones. That is, unless we’ve changed to fuel cells or flywheels by then.”

“If you have a bicycle or exercise equipment, you can probably install a generator device and provide another lifetime supply of AA power from that, too!” They had the plans so you could do it yourself and a bulk buying club so that people could save money on parts and supplies. “Let your kids make their own battery power from sunlight and a little exercise. Power your devices with a walk on the treadmill or while biking on errands.”

They did simple experiments like the one with three boxes of air - three small, sealed, transparent boxes all the same size, each with a thermometer. They set them out in the sun - one box totally transparent, one box's clear sides covered in white insulation board except for the side facing the sun, the third box covered with black insulation board and one side, also, clear to the sun. Two thermometers measured the temperature of the outdoor air, one in the sunlight and another in the shade. The Franklin Folk displayed the results of that day’s solar race with a running total on computer by their table and on the Internet with a mobile uplink.

They called themselves Mister Franklin’s Folks because, like Benjamin Franklin, they believed in ingenuity and thrift. They quoted Poor Richard:

A penny saved is two pence clear. A pin a-day is a groat a year. Save and have.

Every little makes a mickle.

A wise Man will desire no more than what he may get justly, use soberly, distribute cheerfully and leave contentedly.

Spare and have is better than spend and crave.

Like Mr Franklin, they were experimenting with electricity but instead of kites and lightning, they were looking at the sun for energy independence and building the idea of a renewable economy use by use, appliance by appliance, socket by socket, room by room.

One day, one of Mr Franklin's Folk pointed back at their car and said, "This car is now a hybrid vehicle. We modified it to charge an extra battery and can switch that battery with one in the house to run another room or part of the household. Many of us Franklin Folk are reducing our electrical bills considerably. Eventually we want to use the the grid only for back-up and you can too. With the money we save, we'll be able to install enough solar electric panels so we can begin to run the meter backwards and the electric company will have to pay us."

Other days, they had information on how to keep a pantry and food storage. Not only did they teach people how to can and salt and dry foods but they also helped organize buying clubs and bulk purchases in season to save everybody money and help the farmers in the local agricultural system steady their income and cash flow. At the farmers market they displayed maps of all the agricultural resources in the state - farmers markets, pick-your-owns, farm stands, CSAs, community gardens and farms, coops, buying clubs, community kitchens, food pantries and feeding programs. They had composting and worm farming demonstrations, taught the local community, backyard and windowsill gardeners how to lengthen their growing seasons, and encouraged the public planting of fruit trees and berry bushes throughout the city and town.

“Spare and have is better than spend and crave.”

"A wise Man will desire no more than what he may get justly, use soberly, distribute cheerfully and leave contentedly."

"Every little makes a mickle."

"A penny saved is two pence clear. A pin a-day is a groat a year. Save and have."

They quoted Poor Richard's old home truths but put them into an ecological survival context. Each week they offered practical lessons in real thrift or how to save a fortune while saving the environment, the community, and the world.

"Franklin established the oldest working cooperative in the United States, the Contributionship for the Insurance of Houses from Loss Against Fire in 1752. It was called the Hand-in-Hand, after the symbol of four hands grasping four wrists in a form commonly known as a Jacob's Chair. It was their fire mark, a sign they put on the houses they insured so that their volunteer fire department would know which houses it had responsibility for. A volunteer fire department not associated with the Hand-in-Hand would just let the building burn."

"How would Mister Franklin do business these days?" Mister Franklin's Folks asked. "Benjamin Franklin was one of the early researchers into the Gulf Stream. How would he deal with global warming and the ozone hole, let alone local pollution? He invented an odometer to set up postal routes and was the first postmaster general of the United States. What do you think he'd do with the Internet? He published the first political cartoon in North America and refused the job of writing the Declaration of Independence because he would not be edited by anyone but himself.

"Benjamin Franklin was a printer, writer, editor, newspaper, magazine, and book publisher. What do you think he would have done in the modern news environment?"

These were some of the things Mr. Franklin’s Folks brought to their table at the farmer’s market, church social, and neighborhood celebration week after week all that year.

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