High-temperature heat pump technology is a hot research field in international heat pump research and has become an important technical approach for the development of heat pump technology from building applications to industrial applications. The R&D group consisting of Gong Yulie, Lu Zhenneng, Yao Yuan, and Liu Bingshen of the Guangzhou Institute of Energy Research, Chinese Academy of Sciences, and the R&D team of Yantai Ousenna Diyuan Air Conditioning Co., Ltd., under the cooperation platform of the “low temperature thermal energy utilization technology R&D center†jointly established by the two parties, After technical research, it solves a series of technical problems including the matching of heat pump working medium and various components of the unit, high-efficiency heat transfer of the working medium in the high temperature working conditions, and the safety and stability of the compressor operation under high temperature working conditions. , Successfully developed the first 120kW medium and low temperature heat source high temperature heat pump steam unit in China. At present, the unit has been successfully commissioned, and researchers will further work on heat exchanger structural optimization design, heat pump cycle parameter coupling mechanism, compressor compression characteristics, and flash evaporation mechanism, and finally achieve the conditions of a heat source temperature of 60°C. The heating capacity of the unit reached 120kW, the steam production at 110°C reached 120kg/h, and the coefficient of heating performance reached 3.0.
The heat pump steam engine is a new type of compression high-temperature heat pump for the purpose of generating high-temperature steam. The medium-low temperature heat source heat pump steam turbine can utilize high-temperature steam of 100°C or higher using 40-70°C industrial waste heat resources and low-grade heat sources such as geothermal heat. In recent years, high-temperature heat pump technology has become a basic direction for international heat pump research. High temperature heat pumps are used in research projects such as Japan's super heat pump project, the International Energy Agency (IEA) heat pump center, and the International Refrigeration Association (IIR) heat pump development plan. One of the key research topics. At present, domestic research on heat pump technology for producing high-temperature steam above 100°C is still in blank. The successful development of medium-low temperature heat source heat pump steam turbines has pushed the high-temperature heat pump technology to a new height and has greatly expanded the application of heat pump technology. New ideas for energy efficient use, energy saving and emission reduction in the industrial sector.
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