Self-developed! China's ultra-high-temperature heat pump technology achieves new breakthroughs

Source: Science and Technology Daily

By Lu Chengkuan, Science and Technology Daily reporter

On the 10th, the Chinese Academy of Sciences' Institute of Chemistry and Physics announced that the research team has made a series of important progress in ultra-high-temperature industrial heat pump technology. They have independently developed the world's first double-acting free-piston type thermoacoustic Stirling ultra-high-temperature heat pump prototype with a pumping temperature exceeding 200°C, providing a potential green and efficient heating new path for many heat-consuming industries such as papermaking, dyeing, ceramics, and metallurgy. The related achievements have been published in international authoritative journals such as "Nature Energy" and "Applied Physics Letters."

Image source: Chinese Academy of Sciences, Institute of Chemistry and Physics

The research team has recently achieved two major breakthroughs: On one hand, they innovatively proposed a "reverse operation" sound field control mechanism, successfully developing the world's first double-acting free-piston type thermoacoustic Stirling ultra-high-temperature heat pump prototype with a pumping temperature exceeding 200°C, cleverly bypassing the worldwide challenge of developing ultra-high-temperature compressors.

On the other hand, the team developed a thermoacoustic heat pump prototype without any moving parts, which can raise about 140°C low-temperature waste heat to over 270°C for reuse by relying only on thermal energy, achieving the "transfer" and upgrading of thermal energy.

These breakthroughs indicate that thermoacoustic Stirling technology has the potential to develop into the core of the next generation of ultra-high-temperature heat pumps, helping to replace fossil fuel heating in industrial sectors and reduce carbon emissions. The research team also provided an outlook on the key material and technological development directions for ultra-high-temperature heat pumps in the future.

Original article: toutiao.com/article/1851175024201804/

Statement: This article represents the views of the author.