化工学报2016，Vol.67Issue(9)：3536-3544,9.DOI:10.11949/j.issn.0438-1157.20160275
一种低温余热高效利用的氨水动力循环
An efficient ammonia-water power cycle in low temperature waste heat application
摘要
Abstract
An improved ammonia-power cycle activated by low temperature waste heat is operated under three pressure stages,which consists of two turbines. Since there exists many degrees of freedom for ammonia-water power cycle and they are coupled, once the waste heat and condensation temperature are fixed, the selection range of degrees of freedom like three pressure levels and ammonia mass fraction are confined by the cycle constraints.A graphic aid is proposed to select the optimum cycle with various pairs of waste heat temperature and turbine inlet pressure under fixed condensation temperature.For the typical working condition like waste heat and condensation temperature of 190℃ and 30℃, the optimization results shows that the thermal efficiency of 21.6% is obtained and the corresponding second law efficiency is 62%. The thermal efficiency is increased by around 8% when the temperature of waste heat is from 130℃ to 190℃ under a fixed turbine inlet pressure(3500 kPa). The improved cycle increases the performance compared with Rankine cycle and ORC cycle in low temperature waste heat application (>150℃).关键词
二元混合物/热力学/优化/氨水溶液/动力循环/Kalina循环Key words
binary mixture/thermodynamics/optimization/ammonia water solution/power cycle/Kalina cycle分类
能源科技引用本文复制引用
陈昕,王如竹..一种低温余热高效利用的氨水动力循环[J].化工学报,2016,67(9):3536-3544,9.基金项目
国家自然科学基金创新研究群体科学基金项目（51521004）。@@@@ supported by the Science Fund for Creative Research Groups of the National Natural Science Foundation of China (51521004) （51521004）
