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이용화(Y.H.Lee),이동호(D.H.Rie),카시와기타카오(T.Kashiwagi),서정윤(J.Y.Seo) 한국태양에너지학회 1995 한국태양에너지학회 논문집 Vol.15 No.1
본 연구는 H₂0/LiBr 과 NH₃/ H₂O계를 사용하는 2단2원 흡수식 사이클의 특성에 관한 연구이다. 이 사이클은 2개의 단효용 사이클로 이루어져 있으며, 저온단의 흡수기와 응축기에서 얻어진 열을 고온단의 증발기에서 이용하는 사이클로서 저온단의 증발기 및 응축기의 온도, 재생기 온도, 열교환 온도차를 파라메터로 하여 계산한 결과 다음과 같은 결론을 얻었다. 2단2원사이클의 성립범위를 확인하였으며 본 계산조건에서 50~70℃의 승온폭을 얻을 수 있었다. 또한 50℃의 난방온도를 얻기위한 최적재생온도는 105℃, 최대 COP를 얻기위한 저온측사이클의 응축압력은 16℃, 그리고 이 조건에서 저온측 사이클으 응축압력을 단효용 사이클의 경우보다 낮게 억제하는 것이 가능함을 알았다. This paper concerns the study of a two-stage binary absorption cycle employing the refrigerant/ absorbent combinations of LiBr / H₂0 and NH₃/ H₂O. This cycle consists of coupling two single-effect absorption cycles so that the first stage absorber and condenser produces heating water to evaporate refrigerant in the evaporator of the second stage. The effect of operating variables such as evaporator temperature, condenser and absorber temperature, and generator temperature on the coefficient of performance and temperature lift have been studied for two-stage binary absorption heat pump systems. It is found that this cycle has a large temperature lift at 105℃ of optimum generator temperature to obtain 50℃ of condenser temperature.
the NB Heating Technology Group,Kojima, A.,Hanada, M.,Jeong, S.H.,Bae, Y.S.,Chang, D.H.,Kim, T.S.,Lee, K.W.,Park, M.,Jung, B.K.,Mogaki, K.,Komata, M.,Dairaku, M.,Kashiwagi, M.,Tobari, H.,Watanabe, K. North-Holland ; Elsevier Science Ltd 2016 Fusion engineering and design Vol.102 No.-
The long-pulse acceleration of the high-power positive ion beam has been demonstrated with the JT-60 positive ion source in the joint experiment among Japan Atomic Energy Agency (JAEA), Korea Atomic Energy Research Institute (KAERI) and National Fusion Research Institute (NFRI) under the collaboration program for the development of plasma heating and current drive systems. In this joint experiment, the increase of the heat load and the breakdowns induced by the degradation of the beam optics due to the gas accumulation was one of the critical issues for the long-pulse acceleration. As a result of development of the long-pulse operation techniques of the ion source and facilities of the neutral beam test stand in KAERI, 2MW 100s beam has been achieved for the first time. The achieved beam performance satisfies the JT-60SA requirement which is designed to be a 1.94MW ion beam power from an ion source corresponding to total neutral beam power of 20MW with 24 ion sources. Therefore, it was found that the JT-60 positive ion sources were applicable in the JT-60SA neutral beam injectors. Moreover, because this ion source is planned to be a backup ion source for KSTAR, the operational region and characteristic has been clarified to apply to the KSTAR neutral beam injector.