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박찬교(C . K . Park),Y . Komazaki,S . Suda 한국수소및신에너지학회 1993 한국수소 및 신에너지학회논문집 Vol.4 No.1
The operational characteristics of a metal hydride heat pump system are strongly dependent on the amound of hydrogen gas transferred by hydriding and dehydriding reactions between the reactors under dynamic conditions. A new metal hydride heat pump combined with hydrogen compressor was constructed and the dependency of its operating conditions on such as cycle time, amount of hydrogen to be transferred between two reacting metal hydride reactors, operating temperature, and heat transmission characteristics of the reactors was investigated to find the optimum operating efficiency. These conditions were also evaluated in connection with the cooling output and hydrogen compressor connected to the system in order to enhance the total efficiency.
박찬교(C . K . Park),Y . Komazaki,S . Suda 한국수소및신에너지학회 1992 한국수소 및 신에너지학회논문집 Vol.3 No.2
New type of metal hydride heat pump (MHHP) combined with hydrogen compressor was constructed for cooling purpose. A model for calculating the coefficient of performance (COP) is presented for MHHP which consisted of two different stages (enforced and natural stage), and compared with the experimental results. A concept of adiabatic compression work is introduced in the model on the basis of Carnot reversible analysis and the dependence of COP on the various operational parameters is discussed.
화성처리 및 성형화에 따른 금속수소화물의 평형특성 및 수소흡장거동
박찬교(C . K . Park),조태환(T . H . Cho) 한국수소및신에너지학회 1994 한국수소 및 신에너지학회논문집 Vol.5 No.1
Activation behavior, hydriding rate and disintegration were studied for a compact in pellet form and hydrogen storage alloy particles treated with newly developed inorganic solution. Cylindrical disc of 12.95mm diameter and of 7.1mm thickness was prepared by compressing(8ton) a mixture of MmNi<sub>4.5</sub>Al<sub>0.47</sub> and PTFE. Chemical treatment of particles with 1mol of solution was performed at room temperature for several hours until the pH of solution did not change. Chemical treatment made much accelerated activation without any incubation period which generally exists in the untreated alloys and the hydriding reaction rate after full activation also was improved.
한호경(H . K . Han),박찬교(C . K . Park) 한국수소및신에너지학회 1995 한국수소 및 신에너지학회논문집 Vol.6 No.2
Activation behavior, hydriding rate and disintegration were tested for hydrogen storage alloy particles fixed in an adhesive after treating with inorganic solution. Commertial adhesive as a binder was used. Chemical- treated particles showed the best characteristics for activation and a little effect of prevention the break down of the powders themselves after several repeated operations. Furthermore activation characteristics were found to show a similar trend to chemical-treated powders even in the fixed one with an adhesive, except for a slight decrease in reaction velocity.