School News Center Recently, the building energy and thermal science research team led by Professor Wang Lin from the School of Civil Engineering and Architecture of our school has made important progress in the research on the theory of self-cascading refrigeration cycle of mixe

School News Center Recently, the building energy and thermal science research team led by Professor Wang Lin of the School of Civil Engineering and Architecture of our school has made important progress in research on the theory of self-cascading refrigeration cycles of mixed working fluids. Relevant work was published in the top journal "Energy Conversion and Management" in the field of energy science (TOP District 1, Chinese Academy of Sciences, IF: 11.533) under the title "Proposal and performance study on a component-based double-stage compression auto-cascade refrigeration cycle". Associate Professor Tan Yingying is the first author, Professor Wang Lin is the corresponding author, and Henan University of Science and Technology is the only signature unit of the paper. This research work was supported by the National Natural Science Foundation of China's General Project and Youth Project, the Science and Technology Innovation Team of Henan Province's Universities, the Science and Technology Innovation Talents of Henan Province's Colleges and Universities, and the Science and Technology Research Plan of Henan Province.

Professor Wang Lin's team aims at the major needs in the field of low-temperature refrigeration. It has long been committed to the theoretical research of advanced refrigeration cycles and the effective utilization of low-grade energy in air-conditioning cold and heat source equipment. It has proposed a system theory of "cascade preparation of cold energy and complementary utilization of multiple energies". Focusing on the technical bottleneck of refrigeration efficiency of single-stage compression self-cascading refrigeration cycle, this paper takes a unique approach and proposes the idea of ​​"matching the evaporation temperature of high and low boiling point components with staged compression" and constructs a two-stage compression self-cascading refrigeration cycle based on components. The energy consumption of this new two-stage compression self-cascading refrigeration cycle is more than 40% lower than that of a single-stage compression self-cascading refrigeration cycle, and the refrigeration efficiency of the cycle can still be significantly improved at a refrigeration temperature of -60°C. This research provides new ideas for further improving the refrigeration efficiency of mixed working fluid throttling refrigeration technology, and has important theoretical significance for energy conservation and carbon reduction in semiconductor manufacturing, low-temperature biological/drug preservation, freezing and refrigeration, and gas liquefaction.

(Reprinted from: Henan University of Science and Technology News Network)