以HFC245fa+DMF为工质对的吸收式动力循环研究

Research on Absorption Power Cycle With Working Pair HFC245fa+DMF

本文构建了吸收式动力循环的Aspen Plus模拟。经过评选,选用HFC245fa＋DMF体系作为吸收式动力循环的工质对,模拟获得了循环物流的状态参数与热力学性质数据。以系统的热效率和效率作为循环性能的评价指标,考察了循环在热源温度为280-400℃范围内的以HFC245fa＋DMF为工质对的吸收式动力循环应用潜力与循环特性,并分析了构型对循环性能特性的影响。研究结果表明,随着热源温度的升高,循环的热效率提高;此外,相对于化学热机子循环,热机子循环对循环性能特性的影响较大。

An Aspen Plus simulation for absorption power cycle is established in this paper.HFC245fa＋DMF is adopted as the working pairs for absorption power cycle through the selection,and then get the state parameters and thermodynamic properties data of the cycle.The first law and second law efficiency are used as the evaluation indexes.The potential applications and cycle characteristics of HFC245fa＋DMF are investigated in temperature range of 280-400℃.And the influence of configuration to the performance characteristics of cycle is analyzed.The results show that with the increase of heat source temperature,the first law efficiency increased.Besides,compared to the chemical heat sub-cycle,the heat sub-cycle has more influence to the absorption power cycle for absorption power cycle.