[1]成洁,殷勇高,张凡.低品位热驱动混合溶液除湿降温系统性能分析[J].东南大学学报(自然科学版),2019,49(1):148-153.[doi:10.3969/j.issn.1001-0505.2019.01.021]
 Cheng Jie,Yin Yonggao,Zhang Fan.Performance analysis of liquid desiccant cooling system using mixed solution driven by low-grade heat source[J].Journal of Southeast University (Natural Science Edition),2019,49(1):148-153.[doi:10.3969/j.issn.1001-0505.2019.01.021]
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低品位热驱动混合溶液除湿降温系统性能分析()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
49
期数:
2019年第1期
页码:
148-153
栏目:
能源与动力工程
出版日期:
2019-01-20

文章信息/Info

Title:
Performance analysis of liquid desiccant cooling system using mixed solution driven by low-grade heat source
作者:
成洁殷勇高张凡
东南大学能源与环境学院, 南京 210096
Author(s):
Cheng Jie Yin Yonggao Zhang Fan
School of Energy and Environment, Southeast University, Nanjing 210096, China
关键词:
溶液除湿 空气调节 能耗 数值模拟
Keywords:
liquid desiccant air conditioning energy consumption numerical simulation
分类号:
TU831.3
DOI:
10.3969/j.issn.1001-0505.2019.01.021
摘要:
对低品位热驱动混合溶液除湿降温系统的性能进行了模拟研究.基于混合溶液传质关联式,对混合溶液除湿、再生过程进行了数学建模,比较了不同浓度溶液除湿器和再生器出口空气含湿量的实验值与模型计算值,其误差均在10%之内,从而验证了模型的可靠性.模拟分析了混合溶液浓度对系统性能的影响,模拟结果表明:在设计工况下,使用48%混合溶液的系统送风参数为19 ℃,9.7 g/kg,氯化钙和氯化锂的混合溶液的除湿能力与氯化锂溶液相当,而混合溶液成本则大大降低,成本最高可降低65.7%;随着混合溶液浓度的增加,系统热力性能提高且输配能耗降低,但也会导致送风温度及含湿量偏高,因此为了满足送风及节能需求,需要合理地选择氯化钙和氯化锂的混合溶液浓度.
Abstract:
The performance of liquid desiccant cooling system using mixed solution driven by low-grade heat source was simulated. A mathematical model for the major components of the system was established based on the dimensionless experimental correlations of Sherwood number of the mixed solution to investigate the effect of concentration of mixed solution on performance of this system. The experimental values and calculated values of humidity ratio of air at the outlet of the dehumidifier and regenerator were compared and the errors are within 10% which verifies the reliability of the model. The simulation results show that this system can handle the process air to 19 ℃ and 9.7 g/kg under the design condition using 48% mixed solution,and the dehumidification ability of mixed solution is comparable to that of LiCl aqueous solution and the cost of the six mixed solutions is 65.7% cheaper than that of LiCl aqueous solution at most. Besides, the increase of concentration of mixed solution leads to the increase of temperature and humidity ratio of supply air with better thermal performance and lower transmission and distribution power consumption. Therefore, in order to meet the demand of air supply and energy saving, it is necessary to select the concentration of mixed solution reasonably.

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备注/Memo

备注/Memo:
收稿日期: 2018-07-11.
作者简介: 成洁(1994—),女,硕士生;殷勇高(联系人),男,博士,教授,博士生导师,y.yin@seu.edu.cn.
基金项目: 国家重点研发计划课题资助项目(2018YFC0705306)、国家自然科学基金资助项目(51776036).
引用本文: 成洁,殷勇高,张凡.低品位热驱动混合溶液除湿降温系统性能分析[J].东南大学学报(自然科学版),2019,49(1):148-153. DOI:10.3969/j.issn.1001-0505.2019.01.021.
更新日期/Last Update: 2019-01-20