| Title |
Conceptual Design of the Scroll Air Compressor for Fuel Cell |
| Authors |
권태훈(Tae Hun Kwon) ; 안종민(Jong Min Ahn) ; 김현진(Hyun Jin Kim) ; 심재휘(Jae Hwi Shim) |
| Keywords |
연료전지 ; 스크롤 공기압축기 ; 선회반경 ; 스러스트 베어링 손실 Fuel cell ; Scroll air compressor ; Orbiting radius ; Thrust bearing loss |
| Abstract |
Potential application of the scroll type machine to air compressor for fuel cell has been studied. Among the seven configuration factors which determine scroll wrap profile, the wrap thickness and the orbiting radius were chosen as two independent variables to generate various scroll wrap profiles. A conceptual design practice was conducted for scroll air compressor for SOFC with power output of 2kW. With larger wrap thickness and orbiting radius, base plate area of the orbiting scroll becomes smaller, so is the axial gas force acting on the base plate, resulting in reduced thrust loss in spite of larger friction velocity. Performance analysis on the designed model showed that its total efficiency was 64.4% with the mass flow rate per unit compressor input of 0.00905kg/(s?kW) for the wrap thickness of 3.5mm and the orbiting radius of 3.0mm. |