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주우성,김희택,오영삼,백영순 ( W . S . Ju,H . T . Kim,Y . S . Oh,Y . S . Baek ) 한국공업화학회 1997 응용화학 Vol.1 No.1
The new working fluids were composed of three salts such as lithium bromide, lithium nitrate and lithium chloride and added two organic surfactants (ethylene glycol, ethanol amine) of 1∼5wt%, respectively. The solubility data were obtained in the temperature range 253.15∼363.15K. The vapor pressure data were correlated as an Antonie`s equation. The properties of working fluids were investigated as functions of surfactant contents. As the surfactant contents were increased, the crystallization temperature of working fluids was determined to decrease. However the vapor pressure was increased with surfactant contents slightly.
LiBr - LiNO3 - LiCl - Ethanol amine 작동매체를 이용한 흡수식 냉난방기의 이론적 성능해석
주우성,김희택,오영심,백영순 ( W . S . Ju,H . T . Kim,Y . S . Oh,Y . S . Baek ) 한국공업화학회 1997 한국공업화학회 연구논문 초록집 Vol.1997 No.0
N/A The new working fluid was selected the water-lithium bromide-lithium nitrate-lithium chloride-Ethanol amine System. mole ratio of LiBr-LiNO₃-LiCl is 5 : 1 : 2. And surfactant as like Ethanol amine was added 5wt% of total amount. The solubility data were obtained in the temperature range 253.15K∼363.15K. The vapor pressure data were correlated as an Antoine-type equation. Duhring charts were constructed through the measurements of solubility and vapor pressure. Thus the operation range of this system were found to be broadened. Heat Capacity of water-lithium bromide-lithium nitrate-lithium chloride-Ethanol amine System is higher than one of lithium bromide system. And COP were obtained at various generator temperature. Finally, COP of water-lithium bromide-lithium nitrate-lithium chloride-Ethanol amine System is higher than one of LiBr system at Te=5℃, Ta=Tc=45℃ and Te=7℃, Ta=Tc=45.
포스터 발표 - 에너지환경분과 / 화학공정분과 : LiBr - LiNO3 - LiCl - Ethanol amine 작동매체를 이용한 흡수식 냉난방기의 이론적 성능해석
주우성,김희택,오영심,백영순 ( W . S . Ju,H . T . Kim,Y . S . Oh,Y . S . Baek ) 한국공업화학회 1997 한국공업화학회 연구논문 초록집 Vol.1990 No.3
N/A The new working fluid was selected the water-lithium bromide-lithium nitrate-lithium chloride-Ethanol amine System. mole ratio of LiBr-LiNO₃-LiCl is 5 : 1 : 2. And surfactant as like Ethanol amine was added 5wt% of total amount. The solubility data were obtained in the temperature range 253.15K∼363.15K. The vapor pressure data were correlated as an Antoine-type equation. Duhring charts were constructed through the measurements of solubility and vapor pressure. Thus the operation range of this system were found to be broadened. Heat Capacity of water-lithium bromide-lithium nitrate-lithium chloride-Ethanol amine System is higher than one of lithium bromide system. And COP were obtained at various generator temperature. Finally, COP of water-lithium bromide-lithium nitrate-lithium chloride-Ethanol amine System is higher than one of LiBr system at Te=5℃, Ta=Tc=45℃ and Te=7℃, Ta=Tc=45.
흡수식냉난방기용 다성분 리튬염 작동매체의 증기압 및 용해도 측정
주우성,김희택,오영삼,백영순 ( Woo Sung Ju,Hee Taik Kim,Young Sam Oh,Young Soon Baek ) 한국공업화학회 1998 공업화학 Vol.9 No.1
고효율 공냉형 흡수식 냉방기를 위한 신작동매체로 기존의 LiBr-H₂O계에 높은 흡수성과 용해성를 지닌 LiNO₃과 LiCl 무기물을 각각 첨가하여 제조하였다. 본 연구를 통하여 제조된 다성분계의 작동매체에 대한 용해도와 증기압을 측정하여 기존의 LiBr-H₂O계와 비교 분석하였으며, 이들에 대한 최적혼합비를 각각 구하였다. 용해도 측면에서 LiBr-LiNO₃-H₂O계의 경우, LiBr과 LiNO₃의 최적혼합 몰비는 5 : 1이었으며, 반면 LiBr-LiNO₃-H₂O계의 경우 LiBr, LiNO₃, LiCl의 최적흔합몰비는 5 : 1 : 2로 나타났다 한편 증기압은 LiBr-H₂O계에 LiNO₃의 첨가량이 증가함에 따라 증가하였으나, LiCl의 경우 에는 첨가량이 증가함에 따라 감소하는 경향을 각각 나타내었다. In an effort to obtain high efficiency in air cooled absorption heat pump, a new working fluid has been developed with the addition of LiNO₃ and LiCl to the conventional solution of LiBr-H₂O. The solubility and vapor pressure of the multicomponent salts solution developed in this work were measured and compared with the results of LiBr-H₂0 solution. It was observed that there exists an optimal molar ratio of the inorganic salts in terms of solubility. The molar ratio of LiBr and LiNO₃ was found to be about 5 : 1 in the LiBr-LiNO₃ mixture, and in the case of LiBr-LiNO₃-LiCl mixture, the molar ratio of LiBr, LiNO₃ and LiCl was found to be around 5 : 1 : 2. The vapor pressure of the multicomponent salts solution of the optimal molar ratio was increased with adding LiNO₃, while decreased with adding LiCl.