Related Experiment Video
Updated: Aug 30, 2025
11:11
Experimental Methods for Investigation of Shape Memory Based Elastocaloric Cooling Processes and Model Validation
Published on: May 2, 2016
11.2K
Realizing a 10 °C Cooling Effect in a Flexible Thermoelectric Cooler Using a Vortex Generator
Shengduo Xu1, Meng Li1,2, Yuchen Dai1
1School of Mechanical and Mining Engineering, The University of Queensland, Brisbane, Queensland, 4072, Australia.
Advanced Materials (Deerfield Beach, Fla.)
|August 26, 2022
Summary
Flexible thermoelectric coolers (FTECs) offer personalized cooling with a 10 °C drop and 256 W m-2 capacity. This innovative technology enhances comfort while reducing power consumption by 35%.
Area of Science:
- Materials Science
- Thermoelectric Cooling
- Personalized Climate Control
Background:
- Existing cooling solutions struggle with personalized comfort and energy efficiency.
- Thermoelectric cooling offers a promising, solid-state alternative for targeted temperature regulation.
Purpose of the Study:
- To develop an advanced flexible thermoelectric cooler (FTEC) for effective personalized cooling.
- To achieve significant temperature drops and high cooling capacity using novel material structures and device design.
Main Methods:
- Fabrication of quadra-layered Ag2 Se/poly(3,4-ethylenedioxythiophene) polystyrene sulfonate FTECs.
- Integration of a vortex generator to enhance heat dissipation.
- Application of pulse-width modulation (PWM) for temperature control and energy saving.
Main Results:
- Achieved a substantial temperature drop of 10 °C and cooling capacity of 256 W m-2.
- Demonstrated efficient operation with a power consumption of only 68.5 W.
- Maintained a stable skin temperature of 32 ± 0.5 °C under varying ambient conditions (31 °C).
- Reduced power consumption by 35% through PWM control.
Conclusions:
- The developed FTECs provide a reliable and adjustable solution for personalized cooling.
- The innovative FTEC design and control strategy significantly improve cooling performance and energy efficiency.
- This technology is suitable for environments exceeding comfortable temperatures, enhancing user comfort.
Related Concept Videos
01:21Joule-Thomson Effect
5.1K
The Joule-Thomson effect, also known as the Joule-Kelvin effect, describes the temperature change of a fluid when it is forced through a valve or porous plug while keeping it in a thermally insulated environment. This experiment is called a throttling process. This is an important effect widely used in refrigeration and the liquefaction of gases.
This experiment forces high-pressure gas through a throttle valve or a porous plug to a lower-pressure region. The gas expands as it passes through to...
This experiment forces high-pressure gas through a throttle valve or a porous plug to a lower-pressure region. The gas expands as it passes through to...
5.1K
01:19Mechanism of heat transfer
1.3K
Understanding heat transfer mechanisms is essential for understanding how our bodies maintain balance in different environmental conditions. When the environment is thermoneutral, the body is in a state of balance, neither using nor releasing energy to maintain its core temperature. However, when the environment is not thermoneutral, the body employs four heat transfer mechanisms to maintain homeostasis: conduction, convection, evaporation, and radiation. These mechanisms facilitate heat...
1.3K
01:27Thermal expansion and Thermal stress: Problem Solving
1.3K
San Francisco's Golden Gate Bridge is exposed to temperatures ranging from -15 °C to 40 °C. At its coldest, the main span of the bridge is 1275 m long. Assuming that the bridge is made entirely of steel, what is the change in its length between these temperatures?
To solve the problem, first, identify the known and unknown quantities. The initial length (L) of the bridge is 1275 m, the coefficient of linear expansion (α) for steel is 12 x 10-6/°C, and the change in...
To solve the problem, first, identify the known and unknown quantities. The initial length (L) of the bridge is 1275 m, the coefficient of linear expansion (α) for steel is 12 x 10-6/°C, and the change in...
1.3K
01:20Mechanisms of Heat Transfer II
3.4K
In convection, thermal energy is carried by the large-scale flow of matter. Ocean currents and large-scale atmospheric circulation, which result from the buoyancy of warm air and water, transfer hot air from the tropics toward the poles and cold air from the poles toward the tropics. The Earth’s rotation interacts with those flows, causing the observed eastward flow of air in the temperate zones. Convection dominates heat transfer by air, and the amount of available space for the airflow...
3.4K
01:14Mechanisms of Heat Transfer
446
Heat transfer between the human body and its environment occurs through four main mechanisms: conduction, convection, radiation, and evaporation.
Conduction, accounting for approximately 3% of body heat loss at rest, is the process of exchanging heat between molecules of two materials in direct contact. This can result in both heat loss and gain. For instance, when the body is submerged in water, which conducts heat 20 times more effectively than air, it can either lose or gain significant...
Conduction, accounting for approximately 3% of body heat loss at rest, is the process of exchanging heat between molecules of two materials in direct contact. This can result in both heat loss and gain. For instance, when the body is submerged in water, which conducts heat 20 times more effectively than air, it can either lose or gain significant...
446
01:14Mechanisms of Heat Transfer I
4.6K
Just as interesting as the effects of heat transfer on a system are the methods by which the heat transfer occur. Whenever there is a temperature difference, heat transfer occurs. It may occur rapidly, such as through a cooking pan, or slowly, such as through the walls of a picnic ice box. So many processes involve heat transfer that it is hard to imagine a situation where no heat transfer occurs. Yet, every heat transfer takes place by only three methods: conduction, convection, and radiation.
4.6K