| Title |
Technology of Waste Heat Recovery Using Heat Pipe Heat Exchanger for Industrial Practice |
| Keywords |
Heat recovery ; 열회수 ; Heat exchanger ; 열교환기 ; Heat pipe ; 히트파이프 ; Heat transfer rate ; 열전달량 ; Overall heat transfer coefficient ; 총괄 열전달계수 ; Temperature effectiveness ; 온도효율 |
| Abstract |
The present study has been conducted to develop a heat pipe heat exchanger for middle-high temperature ranged from 300 to 600℃. Heat transfer rate, overall heat transfer coefficient and temperature effectiveness were investigated using a heat pipe heat exchanger with Dowtherm A as working fluid. Theoretical analysis was also conducted, and the followings were obtained: (1) Heat exchange rate increased as waste gas temperature supplied to evaporator and frontal velocity in condenser increased, (2) Overall heat transfer coefficient increased by 3～7% as frontal velocity in evaporator and condenser increased, (3) Temperature effectiveness was about 30% in evaporator and was about 40% in condenser, (4) Heat recovery rate was about 38%, (5) Pressure drop did not exceed 8mmH2O under the running condition of 1～3Nm/s, (6) Simulation results were corresponded with experimental results. |