열전에너지변환기술및 레이저클리닝시스템개발사례 2016 년 11 월 21 일 주식회사제펠 1
이슈, 세상을바꿀기술 TEG
열전변환기술 열에너지 열전변환 가역직접고체변환 전기에너지 냉각 열원 열전냉각 (Peltier Effect) 무냉매냉각, 무소음정밀온도제어빠른응답속도장수명소형국소냉각 열전발전 (Seebeck Effect) CO 2 무방출폐에너지활용고신뢰성, 무보수출력안정성 (24h 가동 ) DC/ 마이크로 / 독립전원 간단한구조의고신뢰성전원
열전소재기술 열전모듈및시스템기술 열전냉각기술의응용 3.0 범용냉각 ( 에어컨, 냉장고 ) 차량용 산업용 Seat 냉난방 2.0 1.5 열전공조기소형냉각기 민수용 sensor package 공조기 /Thermal Chuck 현수준 1.0 Chip cooling 차량, 특수냉각 소재성능 (ZT) 냉장고 / 냉온정수기
열전소재기술 열전모듈및시스템기술 열전발전기술의응용 차량용열전발전 마이크로전원 ( 체열등 ) - BMW, GM, Volkswagen - 연비 10% 증대가목표 3.0 자연열발전 ( 지열, 해수등 ) 2.0 1.5 Solar-TEG 하이브리드발전 폐열회수발전 ( 차량, 발전소 ) 산업용열전발전 - 자체소각장열전발전 - 일반산업시설열전발전 현수준 1.0 소재성능 (ZT) 우주선용열전발전 Radioisotope Thermoelectric Generation
열전발전및냉각시스템시장전망 수송및산업폐열활용자연열활용열전냉각활용 U-health care 전기자동차공조 수송배폐열열전발전 태양열 - 태양광복합발전 정밀냉각 LED 냉각 차량용냉각시트 자연열열전발전 인체열열전발전 산업폐열열전발전 폐기물소각로열전발전 오지독립전원 범용냉각 CPU 냉각
열전모듈기술연구개발동향 중고온용열전재료 / 열전모듈 Package Toshiba, GMZ, YAMAHA/ 제펠, KICET skutterudite, Half heusler 열전재료 /Package 체온을활용한 (wearable) 열전발전 Gentherm [Amerigon+JPL+ZT-plus] Climate control system TE based heating and cooling Climate control seat installation rates
열전모듈기술연구개발동향 - 방산분야 IR CLOAKING 전자냉각식미기후시스템 ( 전원장치와 MCS 모듈 ) 8
소형 TEG 시스템기능도 Cooling vessel DC Regulator 5V 12V TEGM Over Temp. Cut off Dev. Heat spreader Heat source <A ssy Block Diagram> 9
Voltage (V) Power (W) Voltage (V) Power (W) TEG 출력평가 o 열전발전모듈출력측정, 온도측정실험 30 25 Voltage(V) Power(W) 10 30 25 Voltage(V) Power(W) 10 20 8 20 8 15 6 15 6 10 10 5 4 5 4 0 2 0 2-5 -10-0.5 0.0 0.5 1.0 1.5 2.0 Current (A) 0-5 -10-0.5 0.0 0.5 1.0 1.5 2.0 Current (A) <480cc 급출력측정지그실험결과 > <700cc 급출력측정지그실험결과 > 0 o Hot side 170, Cold side 70 ΔT=100 o 480cc 급 8.8 [W max ] o 700cc 급 9.8 [W max ] 12/27
Temp.( C) TEG 온도차시험 o 열전발전모듈출력측정, 온도측정실험 200 Cold side Hot side 180 160 100 < 발전출력및온도측정실험장치구성 > 90 5 10 15 20 Time (min) < 시간에따른고온부및저온부온도변화 > o ΔT=100 유지 10 분이내 o 냉각부최대온도 105 온도차감소 발전출력감소 13/27
방열시스템분석 공냉식열해석 수냉식열해석 재질 Al6061 Water Cold side 온도측정위치 러시아 K 사방열판제펠방열판시료 1 Burner Hot side 온도측정위치 Cold side 제펠방열판시료 2 병영용발전기적용 제펠방열판시료 3 휴대용발전기적용 68 71 68 Hot side 12
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TEG 개발사례 1 GTG-R4 TEG-15 B4M 탈부착식 Generator 활용예 ( 동영상 ) 14
TEG 개발사례 휴대용 TEG 시스템 Case 구조 ABS, 41 x 32 x 16 cm ABS, 66 x 66 x 30 cm IP 등급 : 67
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레이저클리닝기술과응용 2016 년 10 월 24 일 주식회사제펠 17
Laser Cleaning Model 유기재료의 ablation energy Periodic boundary Conditions Non-reflecting Boundary conditions Non-reflecting Boundary conditions Laser pulse Attenuation of the light with depth Laser pulse (a) Breathing sphere model Absorbing Granule (b) 고분자내부에너지팽창에의한 ablation 효과
MD Simulation Atomic view Aluminum film Cluster formation Energization * =E 0 /E coh Crystalline solid Molten Temporary void formation *E coh. material cohesive energy Spallation *E 0 absorbed energy per atom (Ultrashort-pulse laser ablation: insights from MD simulation,herbert M. Urbassek and Yudi Rosandi, 2011)
Pressure,MPa 충격파생성 1000 800 600 400 200 15ps 35ps 55ps 75ps 0-200 0 30 60 90 120 150 180 Dictance from the surface, nm Ψ=thermoelastic transfer function C= sound speed into the material = delayed time 레이저의작용시간 (pico second) 과깊이에따른압력의분포
Acoustic intensity(a.u.) Laser cleaning 과물질의결합에너지 Laser cleaning mechanism Laser beam Shock wave Vaporization Contamination layer Plasma (High laser absorptivity) Reflected beam Laser beam Base material (low laser absorptivity) Laser absorption & plasma Laser reflection 1000 800 Oxide copper Clean copper 100 Self limit Resion 600 Contaminated surface Clean surface 400 200 1.2 2 2.8 3.5 4.5 5.7 6.9 8.3 9.7 Laser fluence(j/cm 2 ) 50 0 Ec Ed Energy density(w/cm 2 ) Ec : cleaning threshhold fluence Ed : damage threshhold fluence 21
물질의광학적특성 (Reflectivity(R)) 1 AL 0.8 Ni Steel 0.6 0.4 Cu Silicon Insulator 0.2 Eximer ND:YAG CO CO2 0 0.1 0.3 1.0 3 10 30 Wavelength (um) Surface reflectivity of materials as a function of wavelength
Advantages 선택적인표면처리 레이저클리닝의특징 Electric connectors Turbin blade cleaning
Beam rotating 광학설계기술 Laser beam rotating 기술확보 Rotating beam machine 24
Laser Cleaning 장치구성 Laser(1064nm, 200ns Pulsed) YLP-HP-10-200-20-200 Fume Evacuator Cooling Water Chiller RIEDEL(PC10-40) Cylinder sample Cooling capacity: 1.7 KW RS232C, Digital interface PC Motion control Digital Interface (NI USB 6251) 25
Line Beam Rotator Cleaner Test Bench 26
타이어튜브금형의세정 수작업에의한금형세정 Laser beam rotating 기술을이용한금형세정 27
Cleaning 시험및결과 28
페인트클리닝효과 1. Spraying Lacquer paint on the Copper surface with thickness of 3mm and 38μm 3. Laser Cleaning 4. Cleaned samples Painted copper plate 2. Cutting 6mm*30mm Thickness of the painted layer : 20±5 μm Laser Power/Repetition rate -Average power: 100watt -Pulse energy : 5mJ -Repetition rate : 20KHz 6mm*30mm 29
Cleaning Reference(SEM) Cleaning 전 Copper 표면의 SEM 분석 Copper surface before painted- 2000 Patterns parallel to the rolling direction EDX line scanning No additional notable elements except for copper and carbon 30
Cleaning Reference(SEM) Paint 도포후표면의 SEM 분석 SEM image of black painted copper surface EDX Mapping analysis - Paint thickness: 20 ±5 μm - 0.5~3 μm particles mixed with binder No striking copper peak 31
Cleaning Reference(FT-IR Fourier transformed Infrared Spectroscopy) Cleaning 전 Copper 표면의 Spectrum 32
1002 1138 1292 1655 1739 2854 2930 704 1450 846 746 Cleaning Reference(FT-IR) Paint 도포후의 Spectrum 33
Cleaned surface of copper plate Laser Power: 100watt Pulse Energy: 5mJ Repetition rate: 20KHz Pulse overlapping rate 1: 46.9% Pulse overlapping rate2: 68% Cleaned copper surface 300 EDX line scanning 34
2923 2853 1002 1138 1292 1655 1739 2854 2930 1727 846 746 704 1450 1451 1280 1122 FT-IR spectrum of the cleaned surface (Cleaned area) #1-Cleaned area Painted #2-Cleaned area Copper 35
파생기술의응용 - LASER Texturing Low friction technology Engine cylinder, Crank rod 36
파생기술의응용 모바일디스플레이의 Mask cleaning 오염된 Mask (x 200) Laser cleaning 1064nm,10khz, 1000mm/s, 1W 세정된 Mask (x 200) 37
감사합니다. 38