표제지
제출문
요약문
SUMMARY
Contents
목차
제1장 서론 18
제2장 이론적 배경 21
2.1. 개요 21
2.2. 전기유체역학 (EHD) 모델 21
2.3. 전기장(전장) 계산 24
2.4. 입자의 하전 26
2.5. 입자운동(궤적) 및 전달 27
제3장 실험 30
3.1. 실험장치 30
3.1.1. 미세입자 발생장치 30
3.1.2. 실험용 전기집진기 및 고전압 공급장치 38
3.1.3. 정전분급기(DMA) 43
3.1.4. 응축핵 계수기(CNC) 48
3.1.4. 정전샘플러 및 전자현미경 50
3.2. 실험방법 50
제4장 실험결과 및 고찰 57
4.1. 미세입자계측 실험 57
4.2. 전기집진기 전기특성 실험 62
4.3. 1단식 전기집진기 집진효율 실험 66
4.3.1. 방전극성 및 입경에 따른 집진효율 66
4.3.2. 방전극 직경에 따른 집진효율 69
4.3.3. 여러가지 입자(화학적 조성)에 대한 집진효율 71
4.3.4. 유속변화에 따른 집진효율 76
4.4. 2단식 전기집진기 집진효율 실험 76
제5장 결론 83
제6장 참고문헌 85
Table. 1. Experimental control parameters 56
Table. 2. Experimental conditions 56
Fig. 1. Schematic diagram ofthe experimental system 31
Fig. 2. Drawing of the constantoutput atomizer 35
Fig. 3. Various systems for measurementof small particles 37
Fig. 4. Drawing of the cylindricalelectrostatic precipitator 39
Fig. 5. Schematic diagram of DMA 46
Fig. 6. Schematic diagram of the two CNC 49
Fig. 7. Schematic diagram of theelectrostatic aerosol sampler 51
Fig. 8. Comparison between the measurementdata of SMPS and DMPS 58
Fig. 9. Comparison between the measurementdata of DMPS and the... 60
Fig. 10. Comparison between the measurementdata of OPC and APS 61
Fig. 11. V-I curves for various diametersof the discharge electrode wires 63
Fig. 12. Comparison of V-I curvesbetween air and particle load 64
Fig. 13. V-I curves for various gasvelocities 65
Fig. 14. Collection efficiency vs.particle diameter for various negative... 67
Fig. 15. Collection efficiency vs.particle diameter for various positive... 68
Fig. 16. Collection efficiency vs.particle diameter for various negative... 70
Fig. 17. Collection efficiencies of various particles for -10.25kV 72
Fig. 18. Collection efficiencies of various particles for -11.0kV 73
Fig. 19. Collection efficiencies of various particles for +10.25kV 74
Fig. 20. Collection efficiencies of various particles for+11.0kV 75
Fig. 21. Collection efficienciesof NaCl particle for various gas... 77
Fig. 22. Collection efficienciesof NaCl particle for various gas... 78
Fig. 23. Collection efficienciesof two stage ESP for various negative... 79
Fig. 24. Collection efficienciesof two stage ESP for various positive... 80
Fig. 25. Effect of discharge voltageson the collection efficiency at... 81
List of Photographies
Photo. 1. Photography of the experimental system 32
Photo. 2. Filtered air supply system 33
Photo. 3. Atomizer and magnetic stirrer 36
Photo. 4. Photography of the electrostatic precipitator assembly 40
Photo. 5. Various high voltage power supply systems 41
Photo. 6. The 1000:1 probe and digital multimeter 42
Photo. 7. The assembly of DMA and CNC 47
Photo. 8. Electrostatic sampler 52
Photo. 9. Data acquisition P/C of the SMPS system 54
Photo. 10. SEM Photography of submicron NaCl particles 59