Here’s an ocean wave power device that captures energy from the relative motion of their two arms as the wave passes them. According to the company that developed the product, Crestwing, they plan to sell it to energy production companies …
Hydrokinetics Ideas Everywhere, But Do They Hold Water? Read More »
Here’s a micro-hydrokinetic device, sold to campers who wish to charge their cell phones. Problem: it’s heavier, more cumbersome to set up, far more expensive than the equivalent piece of solar PV or a hand crank, and requires running water …
As suggested here, installing turbines into large city pipes that transport water via the flow of gravity is a solid idea underneath the broad heading of hydrokinetics. Of course, there are caveats:
The video below presents a device to capture energy in ocean waves that consists of a tube under the water, open at both ends, and using the water that oscillates back and forth inside the tube to drive a turbine.
One comes across lots of videos like this that sugarcoat the process of generating energy for the home.
It’s sad to see that run-of-river hydro hasn’t taken off, since it’s such an elegant way to extract the kinetic energy from moving water; such an approach has very little impact to aquatic life, and raises few other environmental concerns.
To clarify matters, I thought I’d respond to two recent comments from attack-dog MarcoPolo, who writes: It would be more honest if would admit your pecuniary relationship with the technologies you write about. and
I just received a note from a reader, asking me to check out his concept in wave energy. As a prelude, he offered the video below, which examines the validity of the overall concept of extracting energy from the motion …
I don’t think I know anyone stupid enough to pay $160 for a device that requires a gushing stream or a stiff, steady breeze (and the time to position it properly) to do the job performed by a $25 piece …
Waterlily Turbine Charges the Cellphones of the True Morons Out There Read More »
Here’s a video depicting one of variations on the theme of extracting energy from ocean waves. Though I’ve seen countless numbers, I haven’t studied each of the variants thoroughly, so it’s only a guess when I say that this seems …
