http://www.guardian.co.uk/environment/2011/nov/04/japanese-engineer-life-without-electricity and continues to develop many non-electric products.
Atelier Non-Electric is currently located at the foot of the Nasu Highlands, one of Japan's major resort areas in northern Tochigi Prefecture. Transportation is convenient Nasu is about 150 kilometers north of Tokyo and can be reached in 90 minutes by the Tohoku Bullet Train.
There are many interesting home appliances that can be operated without electric power. One example is a non-electric refrigerator. It uses a phenomenon called radiational cooling together with the natural convection currents of water.
The approximately 1-hectare site is a kind of exhibition space that presents a "totally non-electric life." A non-electric house utilizes chaff, whose heat insulation performance is as good as glass wool, to the maximum. A non-electric composting toilet uses the power of
microorganisms, which can decompose human waste into manure without an electric pump. The non-electric bath house uses a variety of energies such as solar power, firewood, or even garbage. These non-electric facilities are located around a pond.
Radiational cooling occurs when infrared radiation is emitted from an object's surface, causing its temperature to decrease. On a clear night, infrared rays are emitted from the ground into the atmosphere, cooling the air down. This is why the night is extremely cold in the desert. Most people have experienced water's natural convection currents when warm water rises while cold water sinks and pools at the lowest level.
The cooling unit of the refrigerator (capacity 200 litres) is made of metal that has high thermal conductivity. A large volume of water (about 250 litres) is stored around this unit as a coolant. Radiator panels are placed on top so that the inner surface of the panel touches the
coolant water. The heat of things stored in the cooling unit is conveyed to the surrounding water by the metal, and the heat goes up by natural convection. Thus it is conveyed to the radiator panel, and emitted through radiational cooling.
The system is most efficient on a clear night when there is less water vapor in the air. One clear night (and sometimes even one cloudy night) every three days can keep the temperature inside the refrigerator at around 7 to 8 degrees Celsius even on a mid-summer day. This innovative refrigerator belies our present-day common sense assumption that things cannot be refrigerated without electricity.
Some values take precedence over comfort, convenience and speed
Another popular Atelier product is a handy non-electric coffee roaster. The roaster is made of aluminium and shaped like a saucepan with a handle. Raw green coffee beans are put into the pan and roasted on a gas stove for three to five
minutes by shaking the pan right and left. The beans are roasted evenly and as lightly or deeply as the consumer prefers.
The process of roasting raw coffee beans, cooling them down, grinding them in a coffee mill and pouring fresh brewed coffee into a cup takes about 25 minutes. Not many people want to take such a lot of time to make a cup of coffee in today's society, which requires speed everywhere and at all times. Fujimura did not actually expect much when he started to market the roaster.
This product, however, has sold some 8,500 units so far since it hit the market six years ago, even though it has not been widely advertised, except on the website of Atelier Non-Electric.
"I think it means there are more people enjoying the process," Fujimura says. "So far in Japan, people have sought comfort, convenience, and speed. But we can't always find happiness that way. I think the popularity of the roaster shows that some people
have started thinking that speed is not always the best answer."
What kind of technology does not hamper sustainability?
Although it is a very simple tool, it took six months to develop the roaster. Coffee beans need to be roasted evenly. The material used needs good thermal conductivity so that it will not take too long to roast beans. Also, the shape had to be designed so that the raw coffee beans roll around easily in the container. Furthermore, the sound of the rolling beans needs to be pretty and pleasant. "To make a good non-electric roaster, I needed to use my ingenuity. Thus it took me half a year," Fujimura laughs.
"Actually, it takes more time to develop low-tech than it does to develop high-tech although we tend to think of advanced scientific technology when we say 'technology,' while we take low-tech lightly," says Fujimura. On this misplaced assumption, we tend to desire the products of excessively advanced science and
technology that promote convenience and comfort, and thus we have placed a huge burden on the environment, leading to the energy crisis and other critical situations.
On the other hand, Fujimura does not deny technology itself. His problem is with technology that hampers sustainability. He sometimes holds workshops on making non-electric refrigerators that are geared to non-scientific mothers with small children. These non-electric fridges are so simple that such mothers can easily set them up. We can fix what we make ourselves when it is broken. As science and technology advance, we need to take back technologies that anybody can build, use and repair. Fujimura thinks that is one of the keys to stopping runaway science and technology.
The non-electric way of life that Fujimura suggests is not just a lifestyle without electricity. It also incorporates his philosophy on leading a happy and affluent life using appropriate technology without
depending on energy and money.
Fujimura's dream is to make the Non-Electric Atelier a theme park that showcases the many options we have for fun, affluence, and happiness, particularly in the area of housing. He wants to show that non-electric houses even when they are built by non-professionals are lovely yet strong, good for the health while consuming little or no energy, and furthermore can be built practically for free. He would like to make the atelier a kind of housing exhibit, and believes it will encourage people in the younger generation who feel they can't afford to own a home.
Awareness of the energy crisis is growing worldwide and in Japan, where many people are re-thinking their energy supply after the Great East Japan Earthquake. In this context, on non-electric technology is becoming increasingly important.
• This piece originally ran on Japan for Sustainability