표제지
목차
Nomenclatures 8
ABSTRACT 12
제1장 서론 14
제2장 관련이론 17
2.1. 냉매의 특성 17
2.2. 암모니아 냉매의 특성 21
2.3. 냉동사이클 해석 23
2.3.1. 이론 냉동사이클 23
2.3.2. 실제 냉동사이클 25
제3장 실험장치 28
3.1. 열교환기의 구조 및 특성 32
제4장 실험방법 34
제5장 실험결과 및 고찰 38
5.1. 냉매 질량유량 38
5.2. 압축기 흡입압력 40
5.3. 응축기 냉각수 유량과 출구온도 42
5.4. 응축기 방열량 45
5.5. 냉수 출구온도와 증발기 흡열량 47
5.6. 소요동력 및 COP 50
제6장 결론 53
참고문헌 54
감사의 글
Table 1. Characteristics of refrigerant 16
Table 2. Recommended properties of an refrigerant 19
Table 3. The effect of the refrigerants on the environment 20
Table 4. General data of ammonia compared with R22 22
Table 5. Experimental condition 37
Fig. 1. P-h diagrams of the theoretical and actual refrigeration cycles 27
Fig. 2. Schematic diagrams of the experimental apparatus 31
Fig. 3. Fixed tube sheet type 33
Fig. 4. The relations of refrigerant mass flow rate and superheat temperature at each condensing pressure 39
Fig. 5. The relations of suction pressure and superheat temperature at each condensing pressure 41
Fig. 6. The relations of cooling water mass flow rate and superheat temperature at each condensing pressure 43
Fig. 7. The relations of cooling water outlet temperature and superheat temperature at each condensing pressure 44
Fig. 8. The relations of condenser heat capacity and superheat temperature at each condensing pressure 46
Fig. 9. The relations of chilled water outlet temperature and superheat temperature at each condensing pressure 48
Fig. 10. The relations of evaporator heat capacity and superheat temperature at each condensing pressure 49
Fig. 11. The relations of power and superheat temperature at each condensing pressure 51
Fig. 12. The relations of COP and superheat temperature at each condensation pressure 52
List of Photograph
Photo. 1. Photograph of the experimental apparatus 30