The frozen start up characteristics of the two phase closed thermosyphon using water and FC 40 as working fluid to prevents dry out by freezing of water at the condenser when below zero operation condition has been tested and studied. The experimental data showed that the thermosyphon using immiscible 2 fluids thermosyphon start up successfully at a -30℃ cooling condition as melted water by inflow 2nd working fluid to the condenser.

Abstract
 1. 서론
 2. 실험장치 및 실험방법
 3. 실험결과 및 고찰
  3.1 물 히트파이프의 시동 실패 특성
  3.2 2유체 히트파이프의 시동 특성
  3.3 비혼합 작동유체의 충전율과 체적비의 영향
 5. 결론
 References

• 도선엽(한국산업기술대학교) | S. Y. Do
• 강환국(동은에이티이에스) | H. K. Kang
• 박승철 | S. C. Park
• 김승업 | S. U. Kim