Non-equilibrium 2상 유동 모델을 적용한 OTEC 터빈의 성능 해석

Abstract

An alternative to achieving carbon neutrality is marine energy in addition to wind and solar power. Among marine energy, ocean thermal energy conversion(OTEC) has the greatest potential. A turbine, one of OTEC's core components, uses a refrigerant as a working fluid, and two-phase flow may occur depending on the refrigerant. In turbine simulation, accurate simulation requires a non-equilibrium model with the two-phase flow. CFD Simulations with equilibrium model and the non-equilibrium model show a slight difference in the power and efficiency. This can be seen as a result of the loss due to irreversibility.