Chiang Mei, the Ford Professor of Engineering in the Department of Civil and Environmental Engineering at MIT, is one of the earliest advocates of ocean wave energy. Since the late 1970s he has been working on developing new ways of harnessing this awesome renewable force -- research which recently culminated in the creation of the oscillating water column (OWC).
The device is the product of Mei's collaborations with his colleges from the Technical University of Lisbon and is based on numerical simulations that can predict wave forces on a given device and the system's resulting motion. Situated on or near the shore, an OWC consists of a chamber with a subsurface opening. The system works by modulating water and airflow as waves come in and out and channel into an electricity-generating turbine. "We found that we could optimize the efficiency of the OWC by making use of the compressibility of air -- something that is not intuitively obvious," Mei says. "It's very exciting."
The Portuguese-planned OWC facility, to be built at the mouth of the Douro River in Porto, will include three columns that together will generate 750 kilowatts -- enough to power 750 homes. For more on the OWC go here or visit the MIT Energy Initiative.
As companies in the technology sector know how important security is for their users. That's why they update their systems with better functions so that nobody can easily access their data. In sight are the fingerprint sensors or the face recognition cameras. But there is nothing wrong with using traditional user and password methods. Read more
Whether you’re just getting started with digital marketing or you’ve been at it for a while, it’s easy to become engrossed in the day-to-day tasks without taking the time to look at the overall picture. The best analogy here is…swimming! If you swim with your head in the water and don’t look up every once in a while, it’s not difficult to end up away off in the wrong direction. It’s the same with your digital marketing strategy, and there are plenty of other reasons why you’ll want to make sure you have one in place. Read more
You have probably heard or know Microsoft Excel, but ... had you thought that there are powerful reasons to learn to use it with a certain level of depth? Do you know how to use it? What is your level? Read more