At 5:34 a.m. on July 15, the Long March 7 Yao-10 carrier rocket carrying the Tianzhou-9 cargo spacecraft was ignited and launched. After entering orbit, the Tianzhou-9 cargo spacecraft successfully docked at the rear port of the space station Tianhe core module at 8:52. The launch mission was a complete success. The team of Professor Ma Xuehu and Professor Wen Rongfu from the School of Chemical Engineering of Dalian University of Technology relies on the manned space station engineering science and application project "Durable Hydrophobic Surface Condensation Characteristics and Heat Transfer Enhancement Technology in Microgravity Environment" independently developed the "Space Drop Condensation Heat Transfer Experimental Module" successfully entered my country's space station.

The "Space Droplet Condensation Heat Transfer Experiment Module" will carry out a series of long-term on-orbit experiments such as durable thermal interface materials, dynamic characteristics of droplet condensation, and enhanced heat transfer technology in microgravity environment in the two-phase system of Mengtian cabin. This experimental study of steam droplet condensation in space microgravity environment is the first in the world. The research results will help to reveal the micro-mechanism and physical essence of the phase transition process of interface structure regulation in space environment, form an original database and design criteria with application value, and support the major demand for the efficient and compact development of heat exchange equipment in space field in China.

Thermal control system is one of the core modules of environmental control and life support system of manned spacecraft. As an important part of thermal control system, how to achieve rapid condensate removal and efficient heat transfer in microgravity environment is a major challenge. The project team proposed to use the solid-liquid interface to drive efficient directional liquid transportation, accelerate the removal of condensate, and improve the overall efficiency and space utilization of the thermal control system. After a series of links such as project demonstration, design plan review, development of experimental engineering parts and flight parts, system environment test, ground image matching experiment and ground development, the project team completed the smooth delivery of the space droplet condensation heat transfer experimental module with high quality. In the future, we will rely on the space station's "Space Droplet Condensation Heat Transfer Experiment Module" to carry out systematic droplet condensation space on-orbit experiments, and propose the matching design principles of hot and cold fluid heat transfer of the new condenser; Develop high-efficiency condensation heat transfer technology with integrated design of "condensate transport and transfer-fluid cooling and efficiency enhancement", and develop a miniature high-efficiency compact heat exchanger for the space station in combination with durable functional interface materials.