| Title |
Air Handling Unit Utilizing Water/Air Direct Contact Heat Exchanger with Mesh |
| Authors |
전용한(Yong-han Jeon) ; 김종윤(Jong-Yoon Kim) ; 김남진(Nam-Jin Kim) ; 서태범(Tae-Boem Seo) ; 김종보(Chong-Bo Kim) |
| Keywords |
물-공기 직접접촉 공기조화기 ; 열교환 Water/air direct contact air conditioning system ; Heat transfer |
| Abstract |
The objective of this research was to investigate the enhancement of heat transfer by mesh in water/air direct contact air conditioning system. Mesh is inserted as a turbulent promoter in front of the water injection nozzle. The heat transfer characteristics with and without mesh and the effect of the number of inserted mesh and mesh porosity size have been studied experimentally. Inserted mesh improves heat transfer efficiency compared to non-inserted mesh system and heat transfer efficiency increased as the number of mesh is increased. Meanwhile, heat transfer efficiency decreased as the porosity of the mesh is increased. With inserted mesh, inlet and outlet temperature difference of air increased more than 50%. Heat exchange time of water/air to reach the 100% humidity decreased less than 30%. This result shows inserted mesh can enhance the performance of the water/air direct contact air conditioning system. |