填充氧气介质的锥台型太阳能海水淡化装置性能及强化研究OA

Aiming at the problems of long heat and mass transfer distance and large heat transfer thermal resistance of steam-water binary mixed gas in traditional disc solar desalination device,this paper proposes a con-type solar desalination device filled with oxygen medium,which has the characteristics of small characteristic size,small heat transfer thermal resistance and compact structure.Firstly,the heat and mass transfer process of vapor-water binary mixed gas in the desalination device was analyzed.Then,the effects of filling oxygen medium and air medium on the water production rate,evaporation and condensation temperature of the desalination device were compared and analyzed.The enhancement of forced air cooling on the performance was explored.The results showed that when the operating temperature was 80.0℃,the water production rate and water production ratio of the desalination device filled with oxygen medium increased by 6.25％and 7.5％,respectively,compared with those filled with air medium.The maximum evaporation and condensation temperature difference decreased by 0.5℃,and the vertical temperature gradient of the condensation surface decreased by 0.9℃.The water production rate of the oxygen-filled medium desalination device under forced air cooling conditions is 143.75％higher than that under no forced cooling conditions.The research results provide a reference for improving the water production performance of small solar desalination devices.