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히트파이프와 에너지 절감 방안

히트파이프와 에너지 절감 방안. 2007. 3. 29. R & D Center DAEHONG Enterprise Co., Ltd. Basic Equation. Conduction . Convection. Design Method. Material Properties Geometry Cooling Conditions Cooling Devices. Best Solution. k, A, t, h. Various Heat Sink. k. A. h. 5 ~ 7 . 25 ~ 35 . 5000 ~.

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히트파이프와 에너지 절감 방안

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  1. 히트파이프와 에너지 절감 방안 2007. 3. 29 R & D Center DAEHONG Enterprise Co., Ltd.

  2. Basic Equation Conduction Convection Design Method Material Properties Geometry Cooling Conditions Cooling Devices Best Solution k, A, t, h

  3. Various Heat Sink k A h 5 ~ 7 25 ~ 35 5000 ~

  4. Heat Pipe Performance, k 1/ΔT ∝ K

  5. Heat Pipe Performance, k

  6. Operation of Heat Pipe

  7. Homogeneous Wick Structures No Wick Wrapped Screen Axial Groove Sintered Metal

  8. Composite Wick Structures Screen Covered Wick Composite Screen Artery Groove Artery Slab

  9. Thermosyphon g

  10. What is it good for ? Transfers heat loads at very small temperature drops Precise isothermal control Has no moving parts and sealed unit Operates at any temperature from -420℃ to 2000℃ Can be constructed in almost any shape (tubes, flat plate, etc.) Can vary heat transfer (VCHP) Can only transfer heat in on direction (Diode)

  11. Working Fluid, Wick and Container Compatibility

  12. Operating Range

  13. Operating Range

  14. Figure of Merit ( )

  15. Temperature Distribution in Heat Pipes

  16. Thermal Circuit

  17. Operating Limits

  18. Various Heat Pipes : Variable Conductance Heat Pipe (VCHP) VCHP for Temperature Control of a Micro Wave Transmitter

  19. Various Heat Pipes : Miniature Heat Pipes

  20. Various Heat Pipes : Loop Heat Pipe (LHP)

  21. Various Heat Pipes : Disk Shape Heat Pipe

  22. Various Heat Pipes : Cross Flow type Heat Exchanger • 열교환시 움직이는 부분 및 보조 동력이 없어 신뢰도가 높음. • 고온유체와 저온유체간의 혼입 없이 분리 가능. • HP 일부에서 문제가 발생해도 HPHE는 계속 작동. • 증발부와 응축부의 상대적인 길이를 변화시켜 온도조절 가능

  23. Various Heat Pipes : Liquid Metal Heat Pipe

  24. Heat Pipe Heat Sink for IGBT in a Inverter or C/I System For a High Speed Train For a Subway Train

  25. Thermal Design of HPHX (1) Design Specification (YH Yau, Building Serv. Eng. Res. Technol. 27,4 (2006)) • A theater located in the University of Malaya Medical Center • The airflow changing rate in hospitals: 15 times/hr (ASHRAE) 27 times/hr (Malaysia) 40 times/hr (IRAN) • Volume : 200㎥ • Volume flow rate : 1.53 ㎥/s • Outdoor Air Temp. : 24 ~ 36℃ • Outdoor RH : 30 ~ 660% • Room Air Temp. : 23 ~ 24℃ • Room RH : 46 ~ 60%

  26. Thermal Design of HPHX (1) Plant A

  27. Thermal Design of HPHX (1) Plant B

  28. Thermal Design of HPHX (1) Plant C

  29. Thermal Design of HPHX (2) Simulation Results

  30. Thermal Design of HPHX (1)

  31. Thermal Design of HPHX (2) 현재 시스템 HPHX 적용 시스템

  32. Thermal Design of HPHX (2) Design Specification (DAEHONG R & D Center) • Total Heat Transfer Rate : 332 kW • Exhaust Temperature of Hot Side : 117℃ • Frontal Area : flow velocity 9.8 m/s • Heat Transfer Rate per HP : 2.11 kW • Heat Pipe Array : 18 X 10 • Dimension of H/X : 0.9×1.6×1.0 m • Pressure Drop : 1700 Pa = 12.8mmHg

  33. Thermal Design of HPHX (2) • 회수 열량 : 332 kW • 히트파이프 열교환기 : 7,000 만원 • 덕트 및 배관 비용 : 2,000 만원 • 기타 비용 : 1,000 만원 • 사용 시간 : 8시간/일, 2920시간/년 • 회수 비용 : -. 1 steam ton / 1hr = 800kW = 40,000원 / hr -. 332 kW = 16,600원 / hr → 132,800원/day = 48,472,000원/year • 회수 기간 : 2.06년 (1일 8시간 기준) 0.69년 (1일 24시간 작동 기준)

  34. END

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