1. In this system, an adjustable nozzle, sublimator, high-pressure regulating valve and low-pressure regulating valve are used to replace the conventional evaporator.

2. Some operation modes of the porous plate water sublimator used in an EVA space suit thermal control system are discussed.

3. Finally, some useful conclusions about further design of sublimator are presented.

4. The manufacturing techniques of porous plates are developed. The breadboard and tester of water sublimator are designed.

5. Objective To investigate the development method of hydrophobic coating porous plates for water sublimator and carry out an experimental study on hydrophobic coating porous plates.

6. Objective To investigate the development method of porous plate, the key part of water sublimator, and its main physical characteristics.

7. Conclusion Porous plates developed by making use of sintered powder technology could meet requirements of performance of water sublimator.

8. Test results have proved that the basic design concept of sublimator is feasible and that sintered powder porous plates can meet experimental needs of sublimator.