摘要
针对超临界二氧化碳布雷顿循环存在的夹点问题,从循环设计角度进行了深入细致的分析,并在换热器效能公式的基础上提出了不同初、终参数下夹点问题是否出现的判定方法。分析了不同边界条件下回热型超临界布雷顿循环出现夹点问题的临界条件,得到了判定是否出现夹点问题的公式,可用于指导循环的设计。
For the pinch point problem of the pinch point problem in the supercritical Brayton cycle,the factors affecting the pinch point problem are analyzed from the perspective of the cycle design.Based on the heater effectiveness definition,a judgment method is proposed to determine whether the pinch point problem occurs under different initial and final parameters.The critical conditions for pinch point problem in regenerative supercritical Brayton cycle under different boundary conditions were analyzed.The formula to determine whether the pinch point problem was obtained could be used to guide the design of the cycle.
作者
赵文升
王雅倩
付文峰
郑鹏宇
ZHAO Wen-Sheng;WANG Ya-Qian;FU Wen-Feng;ZHENG Peng-Yu(School of energy power and mechanical engineering of North China Electric Power University,Baoding 071003,China)
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2020年第8期1870-1876,共7页
Journal of Engineering Thermophysics
关键词
超临界二氧化碳
换热器
夹点问题
supercritical carbon dioxide
heat exchanger
pinch point problem
