Yoo Yungpil, Kwak Ho-Young
Department of Climate Change Energy Engineering, Yonsei University, Seoul 03722, Republic of Korea.
Blue Economy Strategy Institute Co., Ltd., #602, 150 Dogok-ro, Gangnam-gu, Seoul 06260, Republic of Korea.
Entropy (Basel). 2023 Dec 28;26(1):35. doi: 10.3390/e26010035.
The maximum temperature limit at which liquid boils explosively is referred to as the superheat limit of liquid. Through various experimental studies on the superheating limit of liquids, rapid evaporation of liquids has been observed at the superheating limit. This study explored the water nucleation process at the superheat limit achieved in micro-platinum wires using a molecular interaction model. According to the molecular interaction model, the nucleation rate and time delay at 576.2 K are approximately 2.1 × 10/(μmμs) and 5.7 ns, respectively. With an evaporation rate (116.0 m/s) much faster than that of hydrocarbons (14.0 m/s), these readings show that explosive boiling or rapid phase transition from liquid to vapor can occur at the superheat limit of water. Subsequent bubble growth after bubble nucleation was also considered.
液体发生爆炸沸腾的最高温度极限被称为液体的过热极限。通过对液体过热极限进行的各种实验研究，已观察到在过热极限时液体的快速蒸发。本研究使用分子相互作用模型探索了在微铂丝中达到的过热极限下的水成核过程。根据分子相互作用模型，在576.2 K时的成核速率和时间延迟分别约为2.1×10/(μm·μs)和5.7 ns。这些数据显示，水的蒸发速率（116.0 m/s）远高于碳氢化合物（14.0 m/s），表明在水的过热极限时会发生爆炸沸腾或从液体到蒸汽的快速相变。还考虑了气泡成核后的后续气泡生长情况。
