Solar dish sets steamy thermal energy efficiency record #Solar @ANUEnergyChange
The Australian National University may have produced the worlds most efficient solar receiver, Via Engadget
In the hunt for ever more reliable and efficient green energy production, the Australian National University (ANU) has developed a solar dish with an incredibly high sunlight-to-steam conversion rate. That’s right, steam. Instead of photovolatic solar panels, which convert the sun’s rays directly into electricity, the so-called “Big Dish” reflects them back at a receiver, suspended in mid-air, which converts water into steam. The gas can then be used to power a motor, or stored for long periods as molten salts. The latest breakthrough? A new receiver that’s 97 percent efficient.
“We believe (it) to be the world’s most efficient solar receiver,” Dr John Pye, from ANU’s College of Engineering and Computer Science said. The solar concentrator dish at ANU is the largest of its kind, measuring 500 square meters. The reflectors are able to focus the power “of 2,100 suns” onto the receiver and heat the water to a scalding 500 degrees Celsius. The team’s new receiver module uses a “top hat” design with a small opening and a wide, catch-all brim. Tiny pipes are positioned on the outside, wrapping inwards, to catch the sunlight before the water travels up inside the “hat.”
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.