Research Field
New efficient and compact heat exchange technology and equipment, new system theory and technology of super/trans-critical CO2 working medium energy power cycle, new efficient adsorption refrigeration/ thermochemical energy storage, advanced thermal functional materials and devices, etc.
Team Building
There are currently 16 employees, including 3 in senior positions and 6 in deputy senior positions; 3 special research assistants; There are 39 graduate students currently studying.
Project and Major Achievement
In terms of new efficient and compact heat exchange technology and equipment, we established a dynamic response equilibrium time and structural maximum stress prediction model and quantitative prediction correlation formula for supercritical CO2 heat exchangers, completed experimental tests on the dynamic characteristics and allowable heating rate of heat exchangers, and completed the annual task of the Chinese Academy of Sciences Youth Team project. We have built a performance testing platform for gas turbine intercoolers, conducted performance testing on independently designed and developed new wing type intercoolers, and completed the milestone task of the "Two Machine" special project.
In terms of the theory and technology of the new energy cycle system for supercritical/transcritical CO2 working fluids, research on the energy and mass transfer mechanism and technology in supercritical/near critical environments has been carried out. The basic method for defining the critical region has been reconstructed through a thermal wave transfer model, and the construction and testing of thermal acoustic mechanism devices in the critical region have been achieved. We built a large-scale mass transfer treatment system for supercritical fluid environment and completed experimental testing, promoted the basic research team project of the Chinese Academy of Sciences, established relevant hot fluid material control and compatibility evaluation technologies, obtained supercritical compression expansion stability and other coupling mechanisms and applied them to design work, formed non-equilibrium thermodynamic optimization analysis program, and realized important support for the development of supercritical cycle optimization methods.
In terms of new and efficient adsorption refrigeration/thermochemical energy storage, according to the requirements of the National Key Fund for Natural Science and the Leading Special Project of the Chinese Academy of Sciences, the ton scale preparation and molding of SFO type aluminum phosphate molecular sieve materials have been completed. A new adsorption bed with efficient heat and mass transfer performance has been developed, and a hundred kilowatt level aluminum phosphate water adsorption refrigeration pilot unit has been built. The maximum COP for driving refrigeration above 60°C is 0.66; compared with commonly used silicone water systems, the performance has been significantly improved, and has passed third-party authoritative testing. We have developed high-quality and stable thermochemical energy storage materials and a new type of moving bed reactor.In terms of advanced thermal functional materials and devices, we have revealed the heat conduction mechanism of multi-dimensional and multiscale composite thermal interface materials, mastered the key technologies of heat conduction path optimization, polymer structure control anddirectional arrangement, and realized mass production of high thermal conductivity gaskets, gel, phase change materials and liquid metals with thermal conductivity 1−20 W/(m·K), mastered the full process research and development technology of heat pipe air-cooled heat sinks from design to product, designed and developed high-power liquid cooling plates to meet the thermal control needs of commercial CPU/GPU chips.
In terms of advanced non-contact temperature measurement, the influence of high-temperature gas parameters on multispectral temperature measurement accuracy was explored, and a gas environment correction model based on neural networks was established, effectively improving temperature measurement accuracy, and we improved the optical path, secondary operational amplifier circuit, and system temperature control strategy of the multispectral thermometer, further enhancing the signal-to-noise ratio.
Technology Transfer
Over 10 projects commissioned by the enterprises were being implemented and the total contract funds are over 20 million CNY.
Patent and Paper
In 2023, 37 academic papers were published, with 36 indexed by SCI and 1 indexed by EI; 12 invention patents were applied for, 14 patents were authorized (including 9 utility models), and 4 software copyrights were obtained.
International Cooperation and Exchanges
Researcher CHEN Lin participated in the 14th International Conference on Thermal Engineering: Theory and Applications (ICTEA-14) from May 25th to May 27th, 2023 and gave a conference report. Researcher CHEN Lin participated in the International Symposium on Aircraft Technology, MRO & Operations (ISATECH-2023) conference and gave a conference report from August 24th to August 26th, 2023. Researcher CHEN Lin participated in the 20th International Conference on Fluid Dynamics from November 6 to November 8, 2023 and gave a presentation. He was awarded the Best Presentation Award of the 20th International Conference on Flow Dynamics 2023. ZHANG Rui participated in the 2023 International Conference on Carbon Neutrality from October 20 to October 22, 2023 and gave a presentation, winning the second prize for Best Oral Presentation.
The Heat and Mass Transfer Research Center cohosted the 6th International Conference on Renewable Energy and Power Engineering from September 15 to September 17, 2023, with approximately 180 participants. The Heat and Mass Transfer Research Center cohosted the International Atomic Energy Cooperation Project Seminar and International Academic Conference from September 5 to September 8, 2023, with approximately 35 participants. The Heat and Mass Transfer Research Center cohosted the Second International Conference on Sustainable Energy Development from December 15 to December 17, 2023, with approximately 200 participants.
Dean: HUAI Xiulan 86-10-82543108 hxl@iet.cn
Vice Dean: CHEN Lin 86-10-82545735 chenlin2018@iet.cn
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Laboratory