Evaluate wind power when cargo ships go green with the help of wind

By Johnny Lupsha, current events writer

Owners of tankers have started refueling. Modern windshields and windshields may look different, but they share similar functions. Sunlight and earth’s vortex cause wind.

A cargo ship at sunset
Cargo ships are turning to renewable energy systems to reduce fuel consumption. Photo by Shutterstock

Over the past few years, there has been increased social pressure on governments and private stakeholders to reduce carbon emissions. The European Union is even imposing a carbon tax on imports. Meanwhile, the shipping industry is producing high carbon emissions. It took 20 years for modern wind power to be easy to use and affordable, but it seems that time is running out. Many shipowners are starting to turn green by supplementing their fuel consumption with modern sails and rotors.

Used in wind power, turbines or ships, it comes from the wind, but what really makes the wind blow? In the video series Power ScienceDr. Michael Weisses, Professor of Earth and Planetary Sciences at St. Louis University in Washington, DC

under pressure

“Winds are generally blown from high pressure areas to low pressure areas,” said Dr. Weiss. “These high pressures and low pressures are usually driven by the temperature difference caused by sunlight. The exact patterns of surface winds are complex and highly variable, and the earth’s crust is affected by a variety of factors, including the distribution, the topography, and the rotation of the earth.

However, he said the winds are constantly changing due to the change in weather, day, month and year due to the relationship between the weather and the wind. According to Dr. Wise, the link between climate and wind is severe and drowning in colder climates, creating a high pressure zone. Air travels from these regions to low-pressure areas, but they do not last long.

“If the heavens were clear, the sun would come in and warm the earth, which would warm the air above, and then the air would begin to rise, and it would cool. Evaporation evaporates to form clouds, and then it rains, ”says Dr. Wise. As the air rises, the pressure decreases, and air now flows to the new low pressure range.

Coriolis effect

According to Dr. Weissation, another major factor in wind patterns is the rotation of the Earth through the “Coriolis force”. In the Northern Hemisphere, the southern hemisphere rotates right and left. He attributed the corollary effect to the fact that global airflow is divided into six different cells in latitude.

“What happens is that the hot air rises in the middle of the earth, warms the sun, and then generally falls to 30 ° north and 30 ° south – which is why there are often dry and arid deserts around 30 ° north and 30 ° south. Air also rises north and south from 45 ° to 60 ° to the two poles and then to the equator, 30 ° north and south of those bands.

With regard to the wind, the key to all of these cycles is that the air must move north and south at an altitude of 30 degrees north and south, north and south.

However, when the wind blows, it turns off as a result of Coriolis. In the above 30 ° to 60 ° bands, the western winds blow in the north and south bands. Meanwhile, more equatorial bands produce wind winds that blow westward. Winter gives more winds than summer, so the Northern Hemisphere is generally more windy than July in January.

Other factors help to create and change the wind according to the local geography, but it is wise for sailors who want to use wind power to start their studies in high and low pressure regions and with the results of Coriolis.

Great Courses Daily Edited by Angela Shoe Maker

Leave a Comment