Self-Learning Heat­ing Control system Saves Energy

The “Urban Mining and Recycling” unit in the NEST research building has two student rooms. One of them was equipped with a self-learning heating and cooling control system. Image: Zooey Braun, Stuttgart

Can buildings learn to save all by themselves? Researchers think so. In their experiments, they fed a new self-learning heat­ing control system with temperature data from the previous year and the current weather forecast. The ‘smart’ control system was then able to assess the building’s behavior and act with good anticipation. The result: greater comfort, lower energy costs.

Factory halls, airport terminals and high-rise office buildings are often equipped with automated “anticipatory” heating systems...

Read More

Newest Solar Telescope produces First Images

Cell-like structures on the surface of the sun
The Daniel K. Inouye Solar Telescope has produced the highest resolution image of the sun’s surface ever taken. In this picture, taken at 789 nanometers (nm), we can see features as small as 30km (18 miles) in size for the first time ever. The image shows a pattern of turbulent, “boiling” gas that covers the entire sun. The cell-like structures — each about the size of Texas — are the signature of violent motions that transport heat from the inside of the sun to its surface. Hot solar material (plasma) rises in the bright centers of “cells,” cools off and then sinks below the surface in dark lanes in a process known as convection. In these dark lanes we can also see the tiny, bright markers of magnetic fields...
Read More

Gut reaction: How Immunity ramps up against Incoming Threats

Image result for VIP directly regulates IL-22 production by ILC3s.
ILC2 and ILC3 activities oscillate during the active and resting phase at steady state in wild-type mice.

A new study has revealed how the gut’s protective mechanisms ramp up significantly with food intake, and at times of the day when mealtimes are anticipated based on regular eating habits.

Researchers from the Walter and Eliza Hall Institute found, in laboratory models, that eating sets off a hormonal ‘chain reaction’ in the gut.

Eating causes a hormone called VIP to kickstart the activity of immune cells in response to potentially incoming pathogens or ‘bad’ bacteria. The researchers also found that immunity increased at anticipated mealtimes indicating that maintaining regular eating patterns could be more important than previously thought.

With the rise in conditions a...

Read More

Wearable Health Tech gets Efficiency Upgrade

Photo of flexible, wearable device.
NC State’s improved theromoelectric generator demonstrates efficiency and flexibility. Photo courtesy of Mehmet Ozturk, NC State University.

North Carolina State University engineers have demonstrated a flexible device that harvests the heat energy from the human body to monitor health. The device surpasses all other flexible harvesters that use body heat as the sole energy source.

In a paper published in Applied Energy, the NC State researchers report significant enhancements to the flexible body heat harvester they first reported in 2017. The harvesters use heat energy from the human body to power wearable technologies – think of smart watches that measure your heart rate, blood oxygen, glucose and other health parameters – that never need to have their batteries recharged...

Read More