Researchers from Shanghai Jiao Tong University in China have designed an industrial high-temperature heat pump that uses water as a working medium and waste heat recovery technology.
“By taking full advantage of the unique advantages of absorption heat transformers at low temperatures and compression heat pumps at high temperatures, the proposed system can achieve high temperature increases while maintaining high energy efficiency and low irreversible losses. This is of great significance for promoting the application of ultra-high temperature heat pumps in industrial environments,” said the study’s corresponding author RZ Wang.
The heat pump system uses residual heat by thermally coupling a water-lithium bromide (H₂O/LiBr) absorption heat transformer to a water vapor compression heat pump.
The heat transformer is powered by waste heat, while the water vapor compression heat pump uses electricity. To fully utilize both technologies, a hybrid absorption-compression system is needed to integrate the absorption heat transformer subcycle with the compression heat pump subcycle through thermal coupling-high temperature output.
The new system was introduced in the study “Performance study of a new hybrid high-temperature heat pump with natural water medium”, published in Energy.
Read more at Source: Sunpower Energy News, January 10, 2025. https://sunpowerenergynews.com/chinese-scientists-design-hybrid-heat-pump-that-delivers-ultra-high-temperature-heating-up-to-180-c-spe/
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