摘要
吸附储热因其储热密度高、储热周期长、工作模式灵活而备受关注。基于热化学变温再吸附原理,构建了低品位热能温度提升实验系统,并采用吸附工质对Mn Cl_2-Ca Cl_2-NH_3对其升温储能特性进行了理论分析和实验研究。结果表明在储热、释热温度分别为135℃和140℃的条件下,最大储热密度和最大潜热显热比分别为614k J·kg^(-1)、0.418。在储热、释热温度分别为125℃和130℃的条件下,最大储热效率为28.57%。实验验证了热化学温度提升系统的可行性。
The sorption thermal energy storage has drawn burgeoning attention due to the high energy storage density, long-term heat storage capability and flexible operating modes. A novel thermochemical temperature-lifting system is established for the integrated energy storage and energy upgrade of low-grade thermal energy based on thermochemical temperature-lifting resorption technology. The resorption working pair Mn Cl2-Ca Cl2-NH3 is selected to investigate the performance of the energy storage cycle theoretically and experimentally. Results indicate that the highest thermal storage density and latent/sensible heat ratio are 614 k J·kg^-1 and 0.418 when the heat charging and discharging temperature are 135℃ and 140℃,respectively. The highest heat storage efficiency is 28.57% when the heat charging and discharging temperature are 125℃ and 130℃. The experiments verify the feasibility of the system for utilizing the low-grade thermal energy.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2016年第4期1453-1458,共6页
CIESC Journal
基金
国家优秀青年科学基金项目(51222601)~~
关键词
吸附剂
吸附
热力学
能量密度
温度提升
adsorbents
adsorption
thermodynamics
energy density
energy upgrade