평행류 열교환기가 적용된 무선통신 중계기 냉각용 슬림형 공조기

다국어 초록 (Multilingual Abstract)

Slim telecommunication cabinet cooler, equipped with parallel flow heat exchangers and operating with R-22, is developed. The performance is compared with imporled one, equipped with fin-tube heat exchangers and operating with R-134a. Test resulLs show that the newly-developed cooler increases the cooling capacity by 6% and EER by 33%. The refrigerant charge for the developed cooler is 500 g compared with 1250 g for the imported one. The adoption of parallel flow heat exchanger appears to have reduced the refrigerant charge. In addition, it is shown that the reduced air flow rates through parallel heat exchangers as compared with those through fin-tube heat exchangers are beneficial to the reduction of the equipment noise.

목차 (Table of Contents)

• ABSTRACT
• 1. 서론
• 2. 수입품 및 개발품 사양
• 3. 시험장치
• 4. 실험결과 및 고찰
• 5. 결론
• 후기
• 참고문헌

참고문헌 (Reference)

1 김용찬, "통신기지국용 하이브리드 냉방기의 성능특성 연구" 대한설비공학회 18 (18): 874-880, 2006

2 강인석, "전자장비 냉각을 위한 2상 순환형 써모사이폰 시스템의 성능에 대한 실험적 연구" 대한기계학회 28 (28): 415-424, 2004

3 Cho, J.P., "Performance evaluation of PF-condenser adapted to package air-conditioner" 46-51, 1999

4 Cho, J.P., "Performance evaluation of PF-condenser adapted to large size air-conditioner" 1 (1): 1-6, 2000

5 전종욱, "MPCM을 적용한 액냉형 냉각기의 성능 특성에 관한 연구" 대한설비공학회 19 (19): 710-717, 2007

6 "KS C 9306 Air conditioner"

7 Schmidt, R.R., "Computer and telecommunications equipment room cooling : a review of literature" 26 (26): 89-98, 2003

8 Webb, R.L., "Air-side performance of enhanced brazed aluminum heat exchangers" 98 (98): 391-410, 1992

9 "ASHRAE Standard 41.2, Standard method for laboratory air-flow measurement" ASHRAE 1986

10 "ASHRAE Standard 41.1, Standard method for temperature measurement" ASHRAE 1986

11 "ANSI/ASHRAE Standard 37, Standard measurement guide, engineering analysis of experimental data" ASHRAE 2005