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Wind turbine without blades

10.02.2007

The new system of wind power generators, proposed by the English inventor Victor Jovanovich, actually has blades, but they are hidden in a streamlined casing.

The wind rotates a wheel with blades inside the casing, resembling the main part of a turboprop aircraft engine. According to the inventor, such a system has doubled efficiency and operates at wind speeds from 11 to 200 kilometers per hour.

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Random news from the Archive

Apple hydrogen battery 17.03.2015

Apple has been granted US Patent #8980491 for a "portable hydrogen fuel cell system" that can run iPhones and iPads for "days and even weeks" on a single charge.

According to the patent, Apple's fuel cell is an external device designed to power portable electronics. It contains a fuel cartridge that "converts fuel to electrical energy", a control unit, an interface for transmitting energy to a mobile device, and a bi-directional communication line for exchanging technical information with the device. The external design of the device is explained by its dimensions.

Apple suggests using liquid hydrogen or its compounds as a fuel: a combination of sodium borohydride, sodium silicate, lithium hydrate, magnesium hydride, lithium borohydride or lithium aluminum hydride with water.
A fuel cell is an electrochemical device that converts raw materials (fuel) into electric current. The peculiarity of the element is that the fuel on which it operates can be loaded from the outside in portions, as it is consumed. In a hydrogen cell, current is generated during a chemical reaction between hydrogen and oxygen from the air.

"Recently, electronics manufacturers have begun to pay more attention to the development of renewable energy sources, including portable fuel cells. Hydrogen-based fuel cells have a number of advantages. They allow you to get a high energy density per unit volume, which allows portable electronics to operate for days and even weeks without recharging the element," the inventors explained.

At the same time, developers have recognized that developing a fuel cell that is compact enough to be placed directly in the portable electronic device itself is a rather difficult task today. Another challenge is to make such a fuel cell inexpensive.

A similar technology has long been used in the aerospace industry to power spacecraft. In the consumer electronics market, fuel cells have received increased attention due to the growth in power consumption of devices.

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