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이호생(Ho-Saeng Lee),정영권(Young-Kwon Jung),정동호(Dong-Ho Jung),문덕수(Deok-Soo Moon),김현주(Hyeon-Ju Kim) 대한조선학회 2011 대한조선학회 학술대회자료집 Vol.2011 No.6
The paper presents the analysis for cycle performance of ocean thermal energy conversion(OTEC) and seawater air-conditioning(SWAC) with deep ocean water and geothermal heat. The basic thermodynamic model for cycle is Rankine cycle and the geothermal water and deep seawater were adapted for the heat source of evaporator and condenser, respectively. The cycle performance such as gross power, sea water and geothermal water flow rate etc. was analyzed on the flowrate variation of deep seawater . The compressor work in case of seawater heat pump system showed 21.7% lower and the COP showed 19.8% higher than that of the existing air-cooled heat pump system when the deep seawater from OTEC is used for the heat source of SWAC.
60RT급 해수냉난방시스템의 성능특성에 관한 실험적 연구
이호생(Ho-Saeng Lee),정동호(Dong-Ho Jung),김현주(Hyeon-Ju Kim) 대한조선학회 2012 대한조선학회 학술대회자료집 Vol.2012 No.5
This study experimented on a heating and cooling system that uses the deep ocean water as a heat source in a laboratory equipped with the water intake system. Experiments on direct cooling using the deep ocean water of yearlong temperatures at 5 oC or less were performed. Experiments on heating using a heat pump system were performed with various ocean waters as heat sources including the deep ocean water at 5 oC, the surface ocean water at 10 oC, and the ground ocean water at 13 oC, among others. The comparison results between the conventional cooling systems and the direct cooling system using the deep ocean water revealed that the latter saved approximately 75.6% of the TOE and reduced the carbon dioxide exhaust by about 1.45 tCO2. The heating COPs of the surface ocean water and the ground ocean water increased by approximately 2.9% and 8.4% more, espectively, than that of the deep ocean water.
60RT급 해수냉난방시스템의 성능특성에 관한 실험적 연구
이호생(Ho-Saeng Lee),정동호(Dong-Ho Jung),김현주(Hyeon-Ju Kim) 한국해양환경·에너지학회 2012 한국해양환경공학회 학술대회논문집 Vol.2012 No.5
This study experimented on a heating and cooling system that uses the deep ocean water as a heat source in a laboratory equipped with the water intake system Experiments on direct cooling using the deep ocean water cf yearlong temperatures at 5 ℃ or less were performed. Experiments on heating using a heat pump system were performed with various ocean waters as heat sources including the deep ocean water at 5 ℃ the surface ocean water at 10 ℃, and the ground ocean water at 13 ℃ among others. The comparison results between the conventional cooling systems and the direct cooling system using the deep ocean water revealed that the latter saved approximately 75.6% of the TOE and reduced the carbon dioxide exhaust by about 1.45 tCO2. The heating COPs of the surface ocean water and the ground ocean water increased by approximately 2.9% and 8.4% more, respectively, than that of the deep ocean water.
이호생(Ho-Saeng Lee),진병주(Byoung-Ju Jin),윤정인(Jung-In Yoon),황준현(Jun-Hyeon Hwang),진심원(Sim-Won Jin),경익수(Ick-Soo Kyung),Donald C Erickson 대한설비공학회 2009 설비공학 논문집 Vol.21 No.8
Experimental results for performance characteristics of small H₃ absorption chiller/heater are presented. The apparatus consists of 7RT water-cooled absorption system, solution pump, boiler, cooling tower and peripheral devices. The effect of experimental parameters, such as refrigerant mass flow rate, solution mass flow rate and cooling water temperature have been investigated in view of the system performance. The capacity of each heat exchanger increased as refrigerant mass flow rate increased in cooling mode. Also, a cooling capacity increased as a strong solution mass flow rate increased. The cooling and heating COP show 0.5, 1.5 regardless of refrigerant mass flow rate, respectively. The results focus on the evaluation for performance characteristics of system with respect to variation of refrigerant mass flow rate under standard design conditions.