TY - JOUR
TI - Numerical analyses on the feasibility of TC type nozzles in ocean thermal energy Conversion turbines
AU - Ma, Q
AU - Huang, J
AU - Lu, H
AU - Luo, H
AU - Li, J
AU - Wu, Z
AU - Feng, X
T2 - Energy Sources, Part A: Recovery, Utilization, and Environmental Effects
AB - The turbine is a crucial component in harnessing ocean thermal energy (OTE), and the impact of the nozzle on turbine performance is significant. TC-profile nozzles have been proven to operate efficiently in air turbines under high-temperature and high-pressure conditions. However, their performance in ocean thermal energy conversion (OTEC) turbines using organic working fluids (low-temperature and low-pressure) still requires further research. Therefore, we focused on a practical 100 kW OTEC turbine equipped with different types of TC-profile nozzles. Three-dimensional numerical models were established, and the simulation results demonstrated that the turbine efficiency using TC-3A was generally higher than other turbines, reaching an optimal efficiency of 89.4%. The turbine can operate efficiently at deviations from the design point of + 10.27% or −31.39% in mass flow rate, ±3°C in inlet temperature, and + 20% or −11.43% in rotor speed during off-design conditions. The results revealed the adaptability of TC-3A nozzles to the OTEC environment and their excellent off-design performance. The study could provide valuable guidance and references for the application of TC-type nozzles in the field of OTEC turbines.
DA - 2024/01//
PY - 2024
VL - 46
IS - 1
SP - 91
EP - 110
UR - https://www.tandfonline.com/doi/abs/10.1080/15567036.2023.2279262
DO - 10.1080/15567036.2023.2279262
LA - English
KW - OTEC
KW - Modeling
KW - Structural
ER -