• 제목/요약/키워드: 확산형 흡수식 냉장고

검색결과 2건 처리시간 0.018초

확산형 흡수식 냉장고의 사이클 해석 (Cycle Analysis of Diffusion Absorption Refrigerator)

  • 김선창;김영률;백종현;박승상
    • 설비공학논문집
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    • 제14권10호
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    • pp.817-824
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    • 2002
  • A diffusion absorption refrigerator is a heat-generated refrigeration system. It uses a three-component working fluid consisting of the refrigerant (ammonia), the absorbent (water) and the auxiliary gas (typically hydrogen). This system has no moving parts and the associated noise and vibration. In this study, the operating characteristics of diffusion absorption refrigerator are investigated through cycle modeling and simulation. System parameters considered in this study are the charged concentration of ammonia aqueous solution, the concentration difference between absorber inlet and outlet and the system pressure determined by the amount of auxiliary gas charged. It was found that there exists a critical value of concentration difference that maximizes the refrigerating capacity. And the lower the system pressure, the higher the refrigerating capacity.

확산형 흡수식 냉장고에서 작동매체 충진조건이 증발온도에 미치는 영향 (Effects of Charging Conditions on Evaporating Temperature for Diffusion Absorption Refrigerator)

  • 김선창;김영률;백종현;박승상
    • 설비공학논문집
    • /
    • 제15권10호
    • /
    • pp.828-834
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    • 2003
  • A diffusion absorption refrigerator is a heat-generated refrigeration system. It uses a three-component working fluid consisting of the refrigerant (ammonia), the absorbent (water) and the auxiliary gas (hydrogen or helium). In this study, experimental investigations have been carried out to examine the effects of charging conditions of working fluids on the evaporating temperature for diffusion absorption refrigerator. Experimental parameters considered in the present experiments are charging concentration, solution charge and system pressure determined by auxiliary gas charged. As a result, in the charging condition of 35% of concentration and 20 kg$_{f}$cm$^2$ of system pressure, the system has the lowest evaporating temperature. It was found that there exists a minimum value of solution charge for the operation of diffusion absorption refrigerator.r.