Thermodynamic analysis of an ammonia-water solution cross-type absorption-resorption heat pump system
Thermodynamic analysis of an ammonia-water solution cross-type absorption-resorption heat pump system
复制标题
氨水溶液交叉式吸收再吸收热泵系统的热力学分析
DOI：
10.1016/j.applthermaleng.2021.117460
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发表时间：
2021-08
影响因子：
6.4
通讯作者：
Shuhong Li
中科院分区：
文献类型：
--
作者：
Lijie Feng;Zhenghao Jin;Runfa Zhou;Mengkai Xu;Luwen Qin;Shuhong Li
吸收-再吸收式热泵（ARHP）可以在较低的工作压力下实现低品位热量的高效利用，但其性能系数（COP）较低，限制了其应用。本文提出了一种氨水溶液交叉型吸收-再吸收式热泵，通过调节再吸收器入口质量流量来平衡氨组分，从而可以取消整流器。建立了热力学模型，研究了不同参数对性能系数的影响。结果表明：当高低压压力对为1.5/0.44 MPa，吸收器、再吸收器和解吸器温度分别为40 °C、40 °C和5 °C时，该系统的COP可达1.564，比传统ARHP提高8.1%。当发生器、吸收器、吸收器和解吸器的温度分别为115 °C、35 °C、40 °C和5 °C时，COP比平衡式ARHP提高了6.4%。与传统系统相比，该系统具有更宽的工作温度范围，吸收塔和解吸塔的温度范围分别提高了1 °C和2 °C。所提出的系统的优点还包括较低的最佳低压值。因此，氨水溶液交叉型吸收-再吸收热泵适合在较大压差下工作，使余热回收更加经济高效。
Absorption-resorption heat pump (ARHP) can realize the efficient utilization of low-grade heat under lower operating pressure than traditional absorption heat pump (AHP), but the application is limited by the low coefficient of performance (COP). In this paper, an ammonia-water solution cross-type absorption-resorption heat pump is proposed to improve the performance, and the rectifier can be eliminated because the ammonia component can be balanced with the adjustment of mass flow rate at the resorber inlet. A thermodynamic model is established to investigate the influences of different parameters on the coefficient of performance. The results reveal that: When the high/low pressure pair is 1.5/0.44 MPa and the temperatures of absorber, resorber and desorber are 40 °C, 40 °C and 5 °C, the COP of the proposed system can reach 1.564, which is 8.1% higher than traditional ARHP. When the temperatures of generator, absorber, resorber and desorber are 115 °C, 35 °C, 40 °C and 5 °C, the COP is improved up to 6.4% compared with the balanced-type ARHP. Besides, the proposed system has wider working temperature ranges than the traditional system and the temperature ranges of absorber and desorber are increased by 1 °C and 2 °C, respectively. The advantages of the proposed system also include the lower optimal low-pressure values. Therefore, the ammonia-water solution cross-type absorption-resorption heat pump is appropriate for working in larger pressure differences and makes waste heat recovery more economical and efficient.
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影响因子：
3.9
作者：
M. Berdasco;M. Vallès;A. Coronas
通讯作者：
M. Berdasco;M. Vallès;A. Coronas
影响因子：
10.4
作者：
T. Jia;Peng Chu;P. Dou;Yanjun Dai
通讯作者：
T. Jia;Peng Chu;P. Dou;Yanjun Dai
DOI：
--
发表时间：
1994
期刊：
--
影响因子：
--
作者：
杜垲;杨思文;张思群
通讯作者：
杜垲;杨思文;张思群
影响因子：
6.4
作者：
N. Merkel';M. Bücherl;M. Zimmermann;Volker Wagner;K. Schaber
通讯作者：
N. Merkel';M. Bücherl;M. Zimmermann;Volker Wagner;K. Schaber
影响因子：
6.4
作者：
Zhangxiang Wu;Yaran Wang;Shijun You;Huan Zhang;Zheng Xuejing;J. Guo;Shen Wei
通讯作者：
Zhangxiang Wu;Yaran Wang;Shijun You;Huan Zhang;Zheng Xuejing;J. Guo;Shen Wei