When the ball starts to fall off the column of air above the fan, the surrounding higher-pressure air pushes the ball back into the area of lower pressure above the fan. The fast-moving air, which carries the ball into the air, is at a lower pressure than the air surrounding the ball. Why does the ball not fly off the fan? It is because of Bernoulli's principle. A simple demonstration of Bernoulli's principle requires floating a ping pong ball in a moving stream of air, for example on top of a fan or hairdryer pointed straight up. It is not only true for fluids but also for air because gases-just like fluids-are able to flow and take on different shapes. His discovery became known as the Bernoulli principle. He realized that fast-moving fluids produce less pressure and slow-moving fluids produce greater pressure. When experimenting with fluids flowing through an hourglass-shaped tube, he made a discovery. The roof experiences lift, similar to an airplane wing, and flies away! In this activity you will put Bernoulli's principle to work-but do not worry, your roof will be safe!ĭaniel Bernoulli was a Swiss scientist who in the 18th century studied how fluids behave when they are in motion. Eventually the pressure difference becomes large enough that the air inside the house starts pushing on the roof. This creates a pressure difference between the air outside and the air inside the house. In a hurricane the fast flow of air above the roof's shape generates a low-pressure area. The Bernoulli Filter is a product Made in Sweden with R&D and manufacturing site located to our facility in Lund.Have you ever seen pictures or videos of a roof being blown off a house during a hurricane or tornado? You might be surprised to hear that the roof is actually not blown off by the strong winds but instead by the air inside the house! This can be explained by Bernoulli's principle, which states that fast-moving fluids or air, such as strong winds, have lower pressure than slow-moving air. The GRP production unit was part of the business until 2015 when the production unit was closed down. In 2012 Bernoulli System acquired one of its main sub suppliers, Peotek Glasfiberprodukter AB. In 1998 Seacool AB change company name to Bernoulli System AB. The product was named Bernoulli Filter by its original inventor Seacool AB.

Particularly the smaller filters should be pipe mounted supported only by the connecting pipes.

One goal was to design filters that should work for years with minimum maintenance. The idea was from the beginning to develop a filter in plastic materials that could be resistant to seawater. The automatic filter with a cleaning function based on the Bernoulli’s theorem was a result of two years of research work during the end of 1980’s. A velocity increase causes a pressure drop as total energy remains constant. The theory behind this observation is explained by the Bernoulli’s theorem of energy conservation. This was different to earlier back flushing principle by changing flow direction for a filter basket. Effective filtration is vital to prevent plate heat exchangers from fouling and clogging.Īt that time, it was known that a flow along a perforated basket could remove debris stuck to the basket. However, automatic filters were still built in materials susceptible to corrosion.

At the time, corrosion resistant titanium had become popular in plate heat exchangers and the pipe systems were often built in plastic material. The objective was to design and develop sea water cooling systems. Bernoulli System AB was founded in 1986, under the name Seacool AB.