Experiments were conducted to evaluate the performance factors such as type of working fluid, flow direction, arrangement and stage of loop thermosyphon heat exchanger for ESS battery container cooling. Pentane showed slightly better performance of the heat exchanger than R-134a as a working fluid. Driving the fan in the suction direction showed improved performance compared to the blowing direction. The two-stage heat exchanger increased the heat transfer rate by more than 30% at the same temperature difference compared to the single-stage heat exchanger. Also, the counterflow flow showed better performance than the parallel flow in the two-stage heat exchanger.

ABSTRACT
1. 서 론
2. 실험장치와 방법
3. 결과 및 고찰
    3.1 열교환기의 성능인자
    3.2 열교환기 배열의 영향
4. 결 론
References

• 강환국(동은 에이티에스) | Hwan-Kook Kang