Electricity: Edison’s revenge | The Economist

In a few years the currently used AC power (110 or 230 Volt) will be replaced by intelligent DC power systems, based on USB connectors. This means that each and every building has to be rewired, outlets needs to be replaced and all the electronic equipment needs to be equiped with direct DC circuits. But the advantage is that every device can now take current when its needed, and as much as needed. And an intelligent micro-grid system is created. Levering available current to those devices that it need at moments its needed. No more wasting power by transformers, and overbooking the used Amperes, blowing up fusions.

This would be great!

 

Electricity: Edison’s revenge | The Economist.

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The Permaculture Design Process – An Example

 

Some weeks ago Dan finished helping run a permaculture design course he has been developing for the PRI Kotare Village, NZ (Koanga Institute) at Kotare Ecovillage near Wairoa, New Zealand (read more about these projects here and here respectively). We had 24 participants and a key part of the course, just like in ourVEG PDCs in Melbourne, is working in small groups through every step of the permaculture design process to complete a design for an area of the eco-village. Each time Dan returns he sees previous course designs being implemented on the ground, and it gives the design projects a very practical, real feeling to know that if they fit the bill they are most likely to jump off the paper and onto the ground! In this case there were six design projects to chose from, ranging from a 100 square metre greenhouse to a 50 hectare hill farm block.

The Permaculture Design Process – An Example.

Het nieuwe rijden: electrisch of waterstof?

Electrisch rijden lijkt het niet te gaan worden. We hebben net de verhalen gehoord van de lease rijders die toch liever brandstof tanken dan moeten zoeken naar laadpalen en moeten wachten tot de accu’s weer opgeladen zijn.

Evenmin zijn electrische auto’s geschikt voor de (binnen)stad bewoners: eigen parkeerplaatsen zijn daar al nauwelijks voorhanden, laat staan mogelijkheden om bij thuiskomst van een laadpaal verzekerd te zijn.

Naast een ontoereikende infrastructuur voor het regelmatig en zonder veel vertraging kunnen opladen van de accur’s, zal er geen grote overgang van benzine, diesel of gas naar electrisch zijn. De full hybrid voldoet nog het beste, maar die heeft als nadeel (dat vaak vergeten wordt) dat zodra op brandstof gereden wordt, deze veel minder zuinig zijn dan vergelijkbare traditionele modellen. Het gewicht van de electromotor en de accu’s moet immers extra mee getransporteerd worden en dat extra gewicht zorgt voor extra brandstof verbruik. En met het bereik van de huidige accu’s, 100-200km, in combinatie met de ontoereikende infrastructuur, zal de zakelijke rijder al snel op brandstof moeten overschakelen. Bovendien: accu’s hebben een beperkte levensduur en zijn schadelijk voor het milieu.

Lees het artikel.

ARUP’s Urban Skyscraper: A Design Proposal for the Year 2050

See on Scoop.itUrban- city- vertical farming – Green cities

In the article entitled “It’s Alive,” the design team at engineering firm ARUP envision a city building in the year 2050 that includes flexible modular pods, urban agriculture, climate-conscious facades and intelligent building systems. ARUP hopes the proposal will ultimately answer the question, “As city living takes center stage, what will we come to expect from the design and function of urban structures and buildings?”.

 

ARUP’s futuristic skyscraper will be a “smart” building that will plug into a smart urban infrastructure, and cater to an expanding and technological society. By 2050, the global population will reach nine billion, 75% of which will live in cities. Significantly, this date will also mark a generation of adults that have lived their entire lives engaging with smart devices and materials. The design theory is that the population of 2050 is likely to be in constant flux, and therefore buildings and materials that surround this urban lifestyle must also be capable of evolution and change.

ARUP has imagined a building of the future that produces more than it consumes. Alongside the sustainable construction, the design will feature photovoltaic capability to capture and transmit energy using on-site fuel cells. In addition, energy will be harnessed from elevators or similar internal systems, along with wind turbines and algae-producing bio-fuel pods…

See on www.gizmag.com