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Eco News and Gadgets

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I ofttimes find interesting articles on eco – gadgets that excite or interest me. I thought to share a few.

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A Waterless Dishwasher You’ll Never Have To Empty

There are some chores I’ve just never stopped hating. Dishes are one of them, making the bed is another. Although we’ve got a fairly new dishwasher it still takes some doing to get me motivated enough to start the process. We have to be down to our last couple of forks. Even after they’re clean, there’s still the task of taking everything out, making sure it’s really dry, and putting it away.

Although using a dishwasher uses less water than washing dishes by hand, it’s still a major consumer of both water and electrical energy in the household. But what can we do? Dishes have to be clean, and the only way to do that is with hot, soapy water, right? Wrong. The DualWash Bipartite Dishwasher is a complete reinvention of the humble dishwasher. Not only does it operate without water, it doubles as the cabinet so once it’s loaded, the dishes are already put away.

dualWash-waterless-dishwasher

Image via Gökçe Altun, Nagihan Tuna, Pınar Şimşek, and Halit Sancar/Tuvie

I know you’re desperate to know how it works (I was too), so here it is: Instead of hot water, the dualWash would use carbon dioxide. When the washing cycle starts, the carbon-dioxide cycle is activated, and supercritical carbon-dioxide  (liquid CO2) is pumped to the cleaning chamber. “Supercritical carbon-dioxide has a very low surface tension, meaning instead of beading up into a ball like water, it spreads out widely covering all surfaces,” explain the designers. As this review points out, should there be solid particles, the supercritical carbon dioxide is returned to carbon dioxide’s gas phase, and forces and stubborn particles into the filter. When full, just remove the filter and clean it.

dualWash-waterless-dishwasher-2

Image via Gökçe Altun, Nagihan Tuna, Pınar Şimşek, and Halit Sancar/Tuvie

The great part is that this futuristic dishwasher has not one but two cabinet areas. Simply slide the door over the side that’s due for cleaning, while the clean dishes in the other side are on display. This concept is perfect for single individuals or couples, because it allows you to wash just a few dishes without the guilt of wasting water and energy.

DualWash uses the Carbon-dioxide cleaning rather than water-based cleaning as a reaction to the water shortages of coming decades. When the washing cycle is started, Carbon-dioxide cycle is activated, and Supercritical Carbon-dioxide is pumped to the cleaning chamber. Supercritical Carbon-dioxide has a very low surface tension, meaning instead of beading up into a ball like water, it spreads out widely covering all surfaces.

During the washing cycle, Carbon-dioxide flows around the machine and cleans it. For solid particles, Supercritical Carbon-dioxide is turned to gas phase and food particle filter holds contaminates. The filter can be removed and cleaned.

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Environmental concerns drive innovation

zeolite technology;  http://www.bsh-group.com/index.php?120358

Revolutionary new developments are rare in the home appliances sector, which makes the BSH dishwasher with Zeolith® Drying System all the more remarkable. The zeolite dishwasher won the inaugural German Innovation Prize for Climate and Environment (IKU) awarded by the German Federal Ministry for the Environment (BMU) and the Federation of German Industries (BDI) in February 2010. This innovation promises to change the market altogether.

 

Award-winning zeolite technology

Our novel drying technology uses zeolite minerals to reduce dishwasher electricity consumption by 20 percent as compared with what were previously the most efficient appliances in the top efficiency class. All in all, our engineers have managed to halve the electricity consumption of our dishwashers over the last 20 years. Zeolite, a substance formerly used only in industry, adsorbs moisture and releases heat in the process, making it ideal for use inside our dishwashers. The hot air produced dries the load after the rinse cycle without any additional energy input.

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About pfiddle

Fiddle teacher - mostly Irish trad. Fiddle, mandolin and concertina. Eco-warrior, won E.U. Green Flower Award for Eco Accommodation. Also Irish (Gold) GHA. Green Hospitality Award. Mad keen on self-build - especially straw-bale and cob. 55 with a full head of (slightly) graying hair. No tattoos or piercings. Fond of animals - but legally so. Fond of food - I eat nothing else. Vegetarian by choice, Irish by the grace of birth, Munster by force of (rugby) arms.

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