background preloader


Facebook Twitter

Using air lift pumps or eductors for fluid handling — Buoyancy and Bernoulli allow air lift pumps and eductors to move one fluid by using another. Ever since the Industrial Revolution, we've been searching for easier ways to get things done.

Using air lift pumps or eductors for fluid handling — Buoyancy and Bernoulli allow air lift pumps and eductors to move one fluid by using another

Workers no longer stir smelly vats of wet nasties using nothing but a wooden paddle. They no longer form bucket brigades. Steam and electrical power boosted manufacturing productivity by multiple orders of magnitude. One innovation was the retreat of the electrical motor from the point of action where fluids are being moved. It became possible to move fluids using an air lift pump or an eductor. Air lift pumps Air lift pumps serve two functions.

In its most simple form, its construction consists of a vertical pipe, open on both ends (see Figure 1), that serves as a fluid pipe. When used for agitating a stratified tank, the fluid pipe should be completely submerged to move material from the lower parts of the vessel to the upper sections. Because it's easier to remove contamination from air than it is to treat contaminated water, air lift pumps find a role in environmental remediation.

News & Articles

Energy Tower. ARES system to put energy storage on the right track. We’ve recently looked at ocean-based energy storage system concepts from MIT and Subhydro AS that are designed to overcome the intermittency problems of renewable energy sources like wind and solar by pumping water out of large tanks and using gravity to let it back in and generate electricity when needed.

ARES system to put energy storage on the right track

Santa Barbara, California-based company Advanced Rail Energy Storage (ARES) has come up with a land-based alternative that would provide grid scale energy storage using electric locomotives. ARES’ technology uses heavy rail cars that are pushed to the top of a grade using excess power from renewable energy plants or when electricity demand is low. Then, when the wind drops, the sun stops shining, or electricity demand rises, the rail cars are released back down the hill, generating electricity through regenerative braking. With multiple vehicles position on the same track, the vehicles move independently and can be positioned mid-elevation in a queue. Source: ARES.

Gravity Power

Pneumatic motor. A pneumatic motor or compressed air engine is a type of motor which does mechanical work by expanding compressed air.

Pneumatic motor

Pneumatic motors generally convert the compressed air energy to mechanical work through either linear or rotary motion. Linear motion can come from either a diaphragm or piston actuator, while rotary motion is supplied by either a vane type air motor or piston air motor. Pneumatic motors have existed in many forms over the past two centuries, ranging in size from hand-held turbines to engines of up to several hundred horsepower. Some types rely on pistons and cylinders; others use turbines. Many compressed air engines improve their performance by heating the incoming air or the engine itself.

Classification[edit] Linear[edit] In order to achieve linear motion from compressed air, a system of pistons is most commonly used. Piston motors are the most commonly used in hydraulic systems. Rotary[edit] Application[edit] History in transportation[edit] » The Journal. How to Build Crystal Power Cells - Long Duration Power. Smart Gaswatch™ Scale Model:#GW315. Never worry about running out of gas with our new Smart Gaswatch™ Digital Tank Scale.

Smart Gaswatch™ Scale Model:#GW315

There is no connection to the propane tank so there is no worry of any type of leakage with this product. The tank just sits on the scale. If your grill has a cabinet it fits neatly inside with the digital display placed outside for ease of reading. How it works: The tank weight is selected on the display when the tank is placed on the scale. SoloPower® SoloPanel® SP1. SoloPanel® SP1 is our second-generation, flexible photovoltaic module optimized for sixteen-inch standing-seam metal roof integration.

SoloPower® SoloPanel® SP1

Employing our proprietary electrochemical process, Copper Indium Gallium di Selenide (CIGS) semiconductor material is deposited on a flexible stainless steel substrate and encapsulated in a state-of-the-art moisture barrier laminate. The SP1 module is easily configured for multiple adhesive applications, enabling rapid installation and low-cost system integration with a wide variety of metal substrates. (UL1703 Certification, IEC Certification ) IKEA starts selling solar panels. World record solar cell with 44.7% efficiency. German Fraunhofer Institute for Solar Energy Systems, Soitec, CEA-Leti and the Helmholtz Center Berlin announced today that they have achieved a new world record for the conversion of sunlight into electricity using a new solar cell structure with four solar subcells.

World record solar cell with 44.7% efficiency

Surpassing competition after only over three years of research, and entering the roadmap at world class level, a new record efficiency of 44.7% was measured at a concentration of 297 suns. This indicates that 44.7% of the solar spectrum's energy, from ultraviolet through to the infrared, is converted into electrical energy. This is a major step towards reducing further the costs of solar electricity and continues to pave the way to the 50% efficiency roadmap.

Hemp-derived carbon nanosheets help build cheap, high-performance supercapacitors. Using waste hemp fibers as the starting material, researchers at the University of Alberta in Canada have developed a high-performance electrode material for supercapacitors at one thousandth the cost of the more commonly used graphene.

Hemp-derived carbon nanosheets help build cheap, high-performance supercapacitors

The advance could lead to supercapacitors that are both cheaper and able to operate under harsh environmental conditions. Despite a bad reputation, hemp is a truly remarkable plant. It can be grown on the cheap, requiring very little care even in very cold and dry environments, and has many uses, ranging from construction material to clothing, bioplastics, and even biofuel creation. In what may be the most surprising application of the lot, a team led by Prof. Energy.