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Thermal imaging on the quality control line

On a high-speed food and beverage line, what you can see is not always what is happening. Thermal imaging adds a different layer of control. Instead of relying on surface appearance, it measures heat distribution as seals are formed and products move through the line, providing continuous, 100% in-line inspection instead of just sampling.
Read the full article.

Built for the test bench, ready for the field

FUTEK's IDC150 Signal Conditioner packages high-performance signal conditioning in a rugged aluminum enclosure. Built for engineers needing accurate, synchronized data from strain gauge sensors, it fits prototyping and lab environments. The device connects seamlessly to existing setups and pairs with SENSIT software and Python APIs. It is ideal for compact, high-performance digital sensor evaluation.
Learn more.

Automotive lighting systems simplified, optimized

The new MLX81119 from Melexis is an 18-channel LIN RGB LED controller with an integrated DC/DC converter, designed to simplify and optimize automotive lighting systems. By generating the LED supply voltage locally on chip, this unit significantly reduces power dissipation, external components, and space requirements in increasingly dense vehicle applications such as door panels, dashboards, and charge-port lighting.
Learn more.

How healthy is your machine? Moisture-in-Oil Sensor

iST's Moisture-in-Oil Sensor is a compact, digital RH/T module that accurately and continuously monitors the water content in oils and fuels. This sensor does not simply measure the absolute water content -- it measures the relative saturation level in % RH or water activity aw in %. This means you get a direct picture of the current oil quality and can react in time. Applications include: marine engines and gearboxes, commercial and rail vehicles, wind turbines and generators, drilling and paper machines, and more. Eval kit available.
Learn more.

World's first native color lidar sensors

Ouster Rev8 features the world's first patented native color lidar sensors. For the first time, a single lidar sensor can understand road signs, interpret brake lights, or simply capture the richness of planet Earth in survey-grade, colorized maps. Based on patented Ouster Silicon with embedded Fujifilm color science, the L4 chip boasts 42.9 GMACs of processing power, detection of up to 20 trillion photons per sec, and a 40-kHz measurement rate with picosecond timing precision. Sees up to 200 m.
Learn more.

Real-world applications: 3D camera ensures precise aircraft cabin drilling

In modern aircraft production, precision is everything. In this application article, learn how an Ensenso 3D camera integrated into an automated process chain ensures accurate detection and alignment of drilling positions in aircraft cabin assembly using the CAD data of the aircraft frame.
Read the full article.

What are Onshape Custom Features?

Certified Onshape Professional Too Tall Toby explains how to supercharge your workflow using community-created tools. In this insightful tutorial, he dives into the world of FeatureScript -- the powerful coding language behind Onshape. Learn where to find new scripts and how to use them. Save time. Learn new skills, shortcuts, and maybe even better ways to do things. Incorporate Custom Features into your everyday work. Very useful.
View the video.

What can you do with touchless magnetic angle sensors?

Novotechnik has put together an informative video highlighting real-world applications for their RFC, RFE, and RSA Series touchless magnetic angle sensors. You may be surprised at the variety of off-highway, marine, material handling, and industrial uses. You'll learn how they work (using a Hall effect microprocessor to detect position) and their key advantages, including eliminated wear and tear on these non-mechanical components. We love when manufacturers provide such useful examples.
View the video.

What can the new Autodesk Inventor AI Assistant do for you?

Autodesk Assistant brings industry-specific context to help execute tasks and orchestrate actions across your 3D models -- not just answer questions. Designed to understand your workflows, Assistant appears as a dockable panel alongside your Inventor workspace and includes the ability to perform complex tasks or gather information from your designs without writing a single line of code. Find out what this new AI "colleague" can do for you.
Watch this informative Autodesk video.

Useful! Snap-together LED enclosure lighting

Seifert StripLite SL 4000 Series LED enclosure lighting provides bright illumination to 700 lumens. On/off switch and motion sensor models are available. Easily daisy chain up to 16 light strips. Magnetic or clip mounting. See video/info on website or contact Bristol Instruments for more information.
Learn about snap-together lighting.

Next-gen multi-touch panels

Beckhoff's Next line of multi-touch control panels and panel PCs is engineered for demanding human-machine interface and control tasks. These panels offer convenient operation with advanced multi-touch technology, a high-quality look and feel, anti-glare and anti-ghosting effects, and a wide choice of formats (from 7 to 23.8 in.) and options. A main draw is the line's attractive pricing.
Learn more.

Most powerful handheld 3D laser scanner on the market

Creaform, a business of AMETEK, has launched HandySCAN 3D|EVO Series, the most powerful handheld 3D laser scanning solution on the market. This innovative series features a built-in touchscreen display and an integrated high-res 12-MP photo camera, incorporating augmented reality (AR) and advanced on-scanner visualization. Users can streamline repetitive inspections and enhance quality control processes using the new auto-alignment feature. Powered by 46 blue laser lines with accuracy of 0.020 mm. The Creaform Metrology Suite includes four application software modules: Scan-to-CAD, Inspection, Automation, and Dynamic Tracking. So many more features.
Learn more.

Continental develops first sensor to measure heat in EV motors

Global automotive supplier Continental has developed a new sensor technology that measures the temperature inside permanently excited synchronous motors in electric vehicles directly on the rotor for the first time.
Read the full article.

LEDs with highest output power available

The new OCI-460 SWIR LED series from EPIGAP OSA Photonics features markedly improved output power compared to the company's previous OCI-480 package and all competitive SMD SWIR LED devices. For example, model OCI-460 ID1550-XS operates at 1,550 nm and features drive current up to 1.5A to deliver approximately 13% higher output efficiency over EPIGAP's OCI-480 package. This impressive advancement features 96% higher output power compared to any other SWIR SMD LED currently on the market. Ideal for use in sensing, machine vision, and more.
Learn more.

AI and collaboration in SOLIDWORKS

Discover AURA, the new AI assistant built into SOLID-WORKS, in this informative video from TriMech Group. What can AURA do for you? It can streamline workflows and make collaborating on and tracking projects even easier, for starters. Other top features of SOLIDWORKS Design 2026 are also covered. Some good tips here.
View the TriMech Group video.

Heat engine cell with no moving parts is as efficient as a steam turbine

A thermophotovoltaic (TPV) cell (size 1 cm x 1 cm) mounted on a heat sink designed to measure the TPV cell efficiency. To measure the efficiency, the cell is exposed to an emitter, and simultaneous measurements of electric power and heat flow through the device are taken. [Credit: Photo by Felice Frankel]

 

 

 

 

By Jennifer Chu, MIT

Engineers at MIT and the National Renewable Energy Laboratory (NREL) have designed a heat engine with no moving parts. Their new demonstrations show that it converts heat to electricity with over 40% efficiency -- a performance better than that of the average turbine-based heat engine system efficiency in the United States.

The heat engine is a thermophotovoltaic (TPV) cell, similar to a solar panel's photovoltaic cells, that passively captures high-energy photons from a white-hot heat source and converts them into electricity. The team's design can generate electricity from a heat source of between 1,900 to 2,400 C, or up to about 4,300 F.

The researchers plan to incorporate the TPV cell into a grid-scale thermal battery. The system would absorb excess energy from renewable sources such as the sun and store that energy in heavily insulated banks of hot graphite. When the energy is needed, such as on overcast days, TPV cells would convert the heat into electricity, and dispatch the energy to a power grid.

With the new TPV cell, the team has now successfully demonstrated the main parts of the system in separate, small-scale experiments. They are working to integrate the parts to demonstrate a fully operational system. From there, they hope to scale up the system to replace fossil-fuel-driven power plants and enable a fully decarbonized power grid, supplied entirely by renewable energy.

"Thermophotovoltaic cells were the last key step toward demonstrating that thermal batteries are a viable concept," says Asegun Henry, the Robert N. Noyce Career Development Professor in MIT's Department of Mechanical Engineering. "This is an absolutely critical step on the path to proliferate renewable energy and get to a fully decarbonized grid."

Henry and his collaborators published their results April 13 in the journal Nature.

Jumping the gap
More than 90% of the world's electricity comes from sources of heat such as coal, natural gas, nuclear energy, and concentrated solar energy. For a century, steam turbines have been the industrial standard for converting such heat sources into electricity.

On average, steam turbine systems reliably convert about 35% of a heat source into electricity, with about 60% representing the highest efficiency of any heat engine to date. But the machinery depends on moving parts that are temperature limited. Heat sources higher than 2,000 C, such as Henry's proposed thermal battery system, would be too hot for turbines.

In recent years, scientists have looked into solid-state alternatives -- heat engines with no moving parts that could potentially work efficiently at higher temperatures.

"One of the advantages of solid-state energy converters are that they can operate at higher temperatures with lower maintenance costs because they have no moving parts," Henry says. "They just sit there and reliably generate electricity."

Thermophotovoltaic cells offered one exploratory route toward solid-state heat engines. Much like solar cells, TPV cells could be made from semiconducting materials with a particular bandgap -- the gap between a material's valence band and its conduction band. If a photon with a high enough energy is absorbed by the material, it can kick an electron across the bandgap, where the electron can then conduct, and thereby generate electricity -- doing so without moving rotors or blades.

To date, most TPV cells have only reached efficiencies of around 20%, with the record at 32%, as they have been made of relatively low-bandgap materials that convert lower-temperature, low-energy photons, and therefore convert energy less efficiently.

Catching light
In their new TPV design, Henry and his colleagues looked to capture higher-energy photons from a higher-temperature heat source, thereby converting energy more efficiently. The team's new cell does so with higher-bandgap materials and multiple junctions, or material layers, compared with existing TPV designs.

The cell is fabricated from three main regions: a high-bandgap alloy, which sits over a slightly lower-bandgap alloy, underneath which is a mirror-like layer of gold. The first layer captures a heat source's highest-energy photons and converts them into electricity, while lower-energy photons that pass through the first layer are captured by the second and converted to add to the generated voltage. Any photons that pass through this second layer are then reflected by the mirror, back to the heat source, rather than being absorbed as wasted heat.

The team tested the cell's efficiency by placing it over a heat flux sensor -- a device that directly measures the heat absorbed from the cell. They exposed the cell to a high-temperature lamp and concentrated the light onto the cell. They then varied the bulb's intensity, or temperature, and observed how the cell's power efficiency -- the amount of power it produced, compared with the heat it absorbed -- changed with temperature. Over a range of 1,900 to 2,400 C, the new TPV cell maintained an efficiency of around 40%.

"We can get a high efficiency over a broad range of temperatures relevant for thermal batteries," Henry says.

The cell in the experiments is about one square centimeter. For a grid-scale thermal battery system, Henry envisions the TPV cells would have to scale up to about 10,000 sq ft (about a quarter of a football field), and would operate in climate-controlled warehouses to draw power from huge banks of stored solar energy. He points out that an infrastructure exists for making large-scale photovoltaic cells, which could also be adapted to manufacture TPVs.

"There's definitely a huge net positive here in terms of sustainability," Henry says. "The technology is safe, environmentally benign in its life cycle, and can have a tremendous impact on abating carbon dioxide emissions from electricity production."

This research was supported, in part, by the U.S. Department of Energy.

Published May 2022

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