Measuring devices for thermoelectrics

Waste heat recovery / Thermoelectric generators (TEG) / Thermoelectric Peltier elements / Sensors / Thermoelectric pads / Thermoelectric modules

Linseis stands at the forefront of thermoelectric instruments, specializing in measuring the efficiency of thermoelectric materials. Our state-of-the-art equipment plays a crucial role in evaluating these materials, enabling their optimization for specific applications.

When it comes to waste heat utilization and the exciting world of thermoelectric generators (TEG), Peltier elements, and advanced sensors, precision measurement is the key to unlocking their full potential. These measuring devices play a crucial role in maximizing energy efficiency and sustainability. In this section, we’ll explore how these technologies work and how measuring devices make it all possible.

1.Thermoelectric Generators (TEG): A Sneak Peek

Thermoelectric generators (TEG) are the unsung heroes of waste heat utilization. These devices capture heat and transform it into electricity. But how do they work, and how can measuring devices ensure their optimal performance? Let’s dive in and find out.

2. Peltier Elements: A Close Examination

Peltier elements, also known as thermoelectric coolers, are fascinating devices. They can either remove heat when electricity is applied or generate electricity when subjected to a heat differential. The precise measurement of this heat exchange is essential, and we’ll explore the role of measuring devices in this process.

3. Sensors: Monitoring Efficiency

Efficiency is at the core of thermoelectric systems. Advanced sensors are integral in monitoring temperature differentials, heat flow, and overall system performance. Learn how these sensors enable real-time adjustments and contribute to sustainable energy solutions.

4. Measuring Devices for Sustainable Solutions

To harness the full potential of waste heat utilization and thermoelectric technologies, specialized measuring devices are essential. These devices provide accurate data on temperature differentials, heat flow, and energy conversion, allowing for fine-tuning and optimization of systems.

5. Advancements in Thermoelectrics: A Sustainable Future

Innovations in thermoelectric technologies are driving us toward a more sustainable future. In this section, we’ll explore the latest trends and breakthroughs that promise to make waste heat utilization and energy generation even more efficient and eco-friendly.

LSR-1

Seebeck coefficient and electrical resistance are measured fully automatically and simultaneously from -160°C to 200°C.

LSR-3

Measurement of the Seebeck coefficient and electrical conductivity on solid materials and thin films
Temperature ranges from -100°C to +1500°C

TEG-Tester

The Linseis TEG Tester is a measuring system for temperature-dependent efficiency evaluation of thermoelectric generators (TEGs).

LZT-Meter

- Combined LFA + LSR
- Measurement of the Seebeck coefficient, resistivity, and thermal diffusivity
- Temperature range -100°C to +1100°C for a complete ZT measuremen

HCS 1/10/100

The HCS system enables the characterization of semiconductor devices and measures: the charge carrier mobility, the resistivity, the charge carrier concentration as well as the Hall constant

TFA

Complete ZT characterization on thin films from nm to µm range
Optional measurement of Hall coefficient, charge carrier density and mobility
Temperature range -160°C to +280°C

TF-LFA

TF-LFA – Time Domain Thermoreflectance (TDTR) – Measurement of thermal diffusivity on thin films

Seebeck, Peltier and Thomson effects

Brief Insight

In the captivating realm of thermoelectricity, the interplay between temperature and electricity gives rise to a symphony of intriguing effects. At its core, this phenomenon rests upon three fundamental pillars: the Seebeck effect, the Peltier effect, and the Thomson effect.

The Seebeck effect, first illuminated by the German physicist Thomas J. Seebeck in 1821, dances into the spotlight, unveiling an electric field’s emergence when a temperature gradient graces an electrically insulated conductor. Quantified by the Seebeck coefficient, symbolized as ‘S,’ this material-specific metric relates negative thermal voltage to temperature disparity, typically denoted in the unit µV/K.

In a captivating reversal of roles, the Peltier effect takes the stage. When an external current couriers through a conductor, this effect engineers a temperature gradient. The underlying cause lies in the distinctive energy landscapes of the involved materials. As the charge carriers transition from one material to another, they either absorb heat energy, inducing a cooling sensation at the contact point or radiate heat energy, ushering in a rise in temperature.

Amidst the backdrop of dwindling fossil fuel resources and the daunting specter of global warming, driven by escalating carbon dioxide emissions, thermoelectricity has reemerged as a beacon of hope.

This rekindled interest stems from its prowess in harnessing waste heat effectively. The mission is clear: leverage waste heat from mechanical powerhouses like automobiles and conventional power plants via the wonders of thermoelectric generators (TEG), all in the name of efficiency. Yet, the allure of efficient thermoelectric materials extends beyond power generation; it extends to the realm of cooling applications, particularly employing the enchanting Peltier effect, with a prime example being the thermostatization of temperature-sensitive components in cutting-edge laser systems.

In the quest to evaluate the thermoelectric prowess of materials, the benchmark of comparison is the dimensionless figure of merit, aptly known as ‘ZT.’ Calculated from the trifecta of thermal conductivity, Seebeck coefficient, and electrical conductivity, it stands as the arbiter of efficiency.

To champion this era of progress, the Linseis LSR-3 emerges as a pioneering instrument. With a remarkable ability to unveil both the Seebeck coefficient and electrical resistance in a single measurement, it operates across a temperature spectrum spanning from -100°C to a scorching 1500°C, ensuring precision and simplicity in the quest for material characterization.

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Overview of applications and samples

Here, you’ll discover a comprehensive selection of measuring instruments designed for thermoelectric applications. This overview is designed to help guide you. Should you have any inquiries regarding a specific measurement or material, please don’t hesitate to reach out to us through our contact form.

Model	LSR-3	LSR-4	LZT	HCS	TFA
Info	Standard Plattform	Harman Upgrade for LSR-3	Combination of LSR-3 + LFA 1000	additionally with Hall constant	Thin films on Linsei’s chip
Measurements
Seebeck coefficient
Resistivity/Conductivity
Hall Konstante/ Hall mobility / Load carrier
Thermal diffusivity
Thermal conductivity		*Hinweis beachten
Complete ZT characterization
Atmosphere
Temperature range	-100 up to +1500°C	-100 up to +1500 (Harman -100 bis 300)	-100 up to +1100	-150 up to +600	-170 up to +300°C
Price	$$	$$	$$$	$	$$$
Samples
solid
Thin films		**Hinweis beachten	***Hinweis beachten