energy recovery Archives – The Green Optimistic

New Technology Recovers Energy from London’s Underground

Mila Luleva — Tue, 29 Sep 2015 08:39:52 +0000

New hybrid technology, tested on London’s underground system, can recover enough energy to power busy stations and lead to great energy savings. The underground system in London is one of the busiest in the world with over a billion passengers boarding the fast trains on annual basis. Unfortunately, the great popularity and convenience of this […]

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London’s Heating System Powered by Energy Harnessed From the Tube

Mila Luleva — Thu, 21 Nov 2013 15:13:13 +0000

How many times have you been on an underground train feeling extremely warm and short of breath when at the same time outside winter temperatures are below freezing? The passengers of the London Underground experience this feeling at least once a day, every day of the week. The temperatures inside the busy trains get so […]

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Motorcycle Uses Hydrogen Fuel Cell to Recover Lost Energy

Benji Jerew — Thu, 10 Oct 2013 18:54:35 +0000

I’ve seen hydrogen fuel cells being tested as range-extenders and as full-blown propulsion systems, but I kind of like this setup, as an energy recovery device, improving the fuel economy of a motorcycle. Granted, motorcycles are already some of the best vehicles, only two-wheels granted, but they still suffer from the exact same inefficiencies that […]

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3D Printable Thin Film Thermoelectric Generator is Flexible Enough to Install Anywhere

Benji Jerew — Thu, 28 Mar 2013 07:28:51 +0000

Most energy systems are extremely inefficient, but flexible thermoelectric generators could recover some of that lost energy and put it back into the system. If we’ve ever seen steam billowing from a cooling tower or felt the hot exhaust coming from an automobile, what we’ve really been seeing is lost energy. According to the US […]

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New Photovoltaic Device Recovers Smartphones' Lost Screen Light

Ovidiu Sandru — Tue, 24 Jan 2012 19:00:25 +0000

Do you own a smartphone? I do. And I charge it every day, in the evening. I even have a friend who charges his iPhone two or three times a day, but he’s an extreme talker. However, great efforts are being made by scientists at the University of Cambridge toward making batteries last longer by […]

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256W Regenerative Shock Absorber Built by NY State University

Ovidiu Sandru — Fri, 19 Mar 2010 14:45:25 +0000

Regenerative braking systems are an essential part of any electric/hybrid car, making it more efficient by taking advantage that energy can be relatively easy-recoverable when converted to electricity. Regenerative suspension systems are yet another approach to this class of mechanisms, continuously recovering the vibrational energy that occurs due to road irregularities, vehicle acceleration and braking.

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