Gravity-Powered Solar Tracker

September 23, 2015 by kris de decker Filed Under: DIY, Gravity Powered Machines, Random, Solar

gravity powered solar tracker

The SunSaluter is an ultra low-cost, passive, single-axis solar panel rotator (called a tracker) designed for the developing world. Using only the power of gravity and water, the SunSaluter enables a solar panel to follow the sun throughout the day, boosting efficiency by 30% and producing four liters of clean drinking water.

It is 30 times less expensive than conventional motorized solar panel rotators (which use complex electronics), much more reliable, and consumes no electricity itself. With improved efficiency, fewer solar panels are needed, and the overall cost per watt of solar energy is reduced.

The SunSaluter features an adjustable design which allows it to integrate with any solar panel – no special tools needed. The solar panels are mounted on the rotating frame, a weight is suspended from one end, and a special waterclock is suspended from the other. As the water empties and the container gets lighter, the panel slowly rotates. The user can set the rate at which the waterclock empties, which controls the SunSaluter’s rate of rotation.

The SunSaluter also contains a water purifier so that each day it produces four liters of clean drinking water. By combining energy and water collection into one simple device, the SunSaluter improves consistent usage of the purifier, which is the Achilles heel of clean water programs. SunSaluters are available for purchase anywhere in the world as a DIY-kit, or in India as prefabricated systems.

More information: SunSaluter. Via Makeshift, who made a video about the technology.

Knapp Double Wheel Generator

September 8, 2015 by kris de decker Filed Under: Engines & Motors, Human power, Toys

knapp double wheel generatorFound at Live Auctioneers. Description: “Painted cast iron original double wheel generator to provide the power to Knapp model trains and trolleys.  In talking to various collectors we feel this is the first Knapp toy train generator to have surfaced and it is in near perfect state. The top of the motor sports the Knapp name plate; this piece appears in the 1908 Knapp catalog 16″ l. , 12″ t.” [Read more…]

African Vernacular Architecture Database

September 6, 2015 by kris de decker Filed Under: Africa, Architecture, Buildings, Random

Malawi home built with rammed earth and thatch roof in Chizogwe village. Picture: Jon (Twingi) Sojkowski

I am a registered architect and I have a passion for African vernacular architecture. I recently (Sept. 2014) traveled to Malawi to document the vernacular architecture in the entire country. 4,700 pictures are on the web page.http://www.malawiarchitecture.com/

I also wanted to share with you my latest project… a data base on African vernacular architecture. This project was started because of the lack of information available on line. The data base includes images from every African country. Here is the link to the site:

http://www.africavernaculararchitecture.com/

The goal of the project is to have people, who live or work in an Africa country, submit pictures of vernacular structures to the data base to share with the world. Full credit is given for every picture submitted. For too long, African vernacular architecture has been a topic that has been both under-documented and, unfortunately, ignored. People say there needs to be documentation but yet nothing is done. Whether this is due to difficulties in obtaining funding or just apathy, the fact remains that very little data can be found online.

malawi house with porch

House with porch in Malawi. Picture: Jon (Twingi) Sojkowski

Architecture is as much of a part of a countries culture as is language, music or art. African vernacular architecture is disappearing. I witnessed that fact in Malawi. There are many reasons why vernacular materials and construction techniques are being abandoned in favor of western ones. One main reason is the lack of documentation, especially finding information on line.

I am hoping you could share the project with your readers, the more awareness, the better the chance to convince people to submit pictures to the data base. There is no other resource for African vernacular architecture like the data base: there is no organization gathering information, there is no active research, there is no voice for it. I will gladly answer any questions that you might have about the project.

Cheers,

Jon (Twingi) Sojkowski

Why Trains Are the Best Aid to Thought

August 20, 2015 by kris de decker Filed Under: Brains, Random, Trains, Travel

edward hopper train dreaming

“Journeys are the midwives of thought. Few places are more conducive to internal conversations than a moving plane, ship or train. There is an almost quaint correlation between what is in front of our eyes and the thoughts that we are able to have in our heads: large thoughts at times requiring large views, new thoughts new places. Introspective reflections which are liable to stall are helped along by the flow of the landscape…

Of all modes of transport, the train is perhaps the best aid to thought: the views have none of the potential monotony of those on a ship or plane, they move fast enough for us not to get exasperated but slowly enough to allow us to identify objects…

Every time the mind goes blank, having hit on a difficult idea, the flow of consciousness is assisted by the possibility of looking out of the window, locking onto an object and following it for a few seconds, until a new coil of thought is ready to form and can unravel without pressure.

At the end of hours of train-dreaming, we may feel we have returned to ourselves — that is, brought back into contact with emotions and ideas of importance to us. It is not necessarily at home that we encounter our true selves. The furniture insists that we cannot change because it does not; the domestic setting keeps us tethered to the person we are in ordinary life, but who may not be who we essentially are.”

Quoted from: The Art of Travel, Alain de Botton, 2003. Picture: Compartment C, Car 293, Edward Hopper.

No Tech Reader #2

August 20, 2015 by kris de decker Filed Under: No Tech Readers

“The robots aren’t taking our jobs; they’re taking our leisure.” (The Automation Myth, Vox)

How to Work in Engineering for Global Development

August 7, 2015 by kris de decker Filed Under: Work

job engineer2“So, you have decided to put your engineering skills to use in the service of global development, but you’re not sure how to get started. We asked some of our happily employed members and other experts and came away with two different kinds of answers. The first is that it’s hard, and the second is that it’s possible.”

Read more at Engineering For Change. Image: Envisioning the American Dream.