green wheels

Boat tail saves trucks 7,5 percent energy

A boat tail, a tapered extension on the back of a truck, provides a fuel savings of 7.5 percent. This is because the aerodynamics significantly improves, according to road tests of the collaboration platform PART (Platform for Aerodynamic Road Transport).

Public road
A boat tail is a tapered extension on the back of a truck with a length of about two meters. The boat tail had during wind tunnel experiments and computer simulations, both performed at TU Delft, in theory and proven at scale. Now is a combination equipped with a boat tail, also tested on the road.

Emission
A truck drove one years combined with long tail boat (of variable length) and one years without a long tail boat. The improved aerodynamics caused, depending on the length of the boat tail, for fuel (and emissions!) Up 7.5 percent. A boat-tail length of two meters was optimum.

Solar Camper

Still but a couple of months and spring starts, and with that the camping season. Or: gone house! here is the selfsufficient camper.
The solar panels are equipped with sun-trackers, they follow the sun during the day thus being able to harvest as much energy as possible.
The solar panels deliver sufficient electricity for all electrical appliances on board, including heating and lighting (LED). A good hybrid engine makes the vehicle economical and makes it possible to drive it on green energy completely.
On the dashboard all energy stocks can be read. There's a sattellite internet connection.

Sustainable scooter: lightweight, folding, electric

Green scooter, sustainable and foldable, by MIT

(Automatic translation from Dutch) The RoboScooter is a lightweight, folding, electric scooter. For the user a comfortable town vehicle, good for the environment as well: just as fast as a car in the city but only needs little space to park, no noise nuisance, no pollution by using, low energy-use because of the low weight. To be charged of course with green electricty. Devigned by the Smart Cities group van MIT Media Lab.
Who brings this to the market first?

Parking = charging: solar energy scooter

scooter op zonne-energie, milieuvriendelijk, zonnepanelen

(Automatic translation ) Juan de la Serva considered this concept for company SunRed. You drive through the city to your appointment. You park. The solar panels slide over your scooter. If you return the batteries have been reloaded.
The innovative concept was rewarded on the Barcelona engine show, a prototype follows.

scooter op zonne-energie, milieuvriendelijk, zonnepanelen

The extending panels have in total a surface of 3 square meters. As a comparison: the Luna 4 has a solar panel surface of 6 m2.

scooter op zonne-energie, milieuvriendelijk, zonnepanelen

Range with entirely loaded batteries would be approximately 20 kilometres, might be enough for in the city. Do park your scooter in the sun though! In Spain thats not to difficult.