Efficient & Silent Refrigerators: The Future of Cooling
Here’s a breakdown of the key information from the provided text, focusing on the new thermoelectric material (CHESS) and its potential impact:
Key Findings & Benefits of CHESS Thin-film Technology:
* Significant efficiency Improvement: CHESS materials demonstrated nearly 100% improvement in efficiency over customary thermoelectric materials at room temperature (80°F/25°C). This translated to:
* 75% improvement in efficiency at the thermoelectric module level.
* 70% improvement in efficiency in a fully integrated refrigeration system.
* Material Reduction: CHESS requires drastically less material – onyl 0.003 cubic centimeters per refrigeration unit (about the size of a grain of sand).
* Scalability: The thin-film nature of the technology allows for mass production using existing semiconductor chip production tools,making it potentially cost-effective for widespread adoption.
* Potential Applications: The technology could scale from small refrigeration systems to large building HVAC applications, similar to the progression of lithium-ion batteries.
who is Involved:
* Researchers: Nathan Fairbanks, Jon Pierce, and Rama Venkatasubramanian (from Johns Hopkins APL).
* collaborator: Samsung Research’s Life Solution team (led by Joonhyun Lee) - provided validation through thermal modeling.
How it was Tested:
* Researchers compared refrigeration modules using CHESS thin-film materials with traditional bulk materials in standardized refrigeration tests.
* They measured electrical power needed for various cooling levels in commercial refrigerator test systems.
* Samsung Research validated the results with detailed thermal modeling.
In essence, this research presents a promising new thermoelectric material that could significantly improve the efficiency and reduce the cost of refrigeration and cooling technologies.