In this study, thermal performance test of VMD module was performed, prior to the construction of the demonstration plant using the vacuum membrane distillation　(VMD) module of the capacity of 400 m3/day and to the commercialization of the VMD module. For the thermal performance test, the experimental equipment of capacity of 2 m3/day was constructed. The permeate flux test and thermal performance test according to feed water conditions such as temperature and flow rate were conducted. The VMD module used in the study was manufactured by ECONITY Co., LTD with PVDF hollow fiber membrane. As a result, the Performance Ratio (PR) of the VMD module showed the maximum value of 0.904 under the condition of feed water temperature of 75℃ and flow rate of 8 m3/h. PR value of the VMD module using PVDF hollow fiber membrane showed linearly increasing relationship with feed water temperature and flow rate. Also, The permeate flux of the VMD module was analyzed to have maximum value of 18.25 LMH and the salt rejection was 99.99%.

• 주홍진(한국에너지기술연구원 태양열융합연구실) | Hongjin Joo (Solar Thermal Convergence Laboratory, Korea Institute of Energy Research (KIER))
• 곽희열(한국에너지기술연구원 태양열융합연구실) | Heeyoul Kwak (Solar Thermal Convergence Laboratory, Korea Institute of Energy Research (KIER)) Corresponding author