Heat Transfer and Thermodynamic Performance of LiBr/H2O Absorption Heat Transformer with Vapor Absorption Inside Vertical Spiral Tubes
Heat Transfer and Thermodynamic Performance of LiBr/H2O Absorption Heat Transformer with Vapor Absorption Inside Vertical Spiral Tubes
复制标题
垂直螺旋管内蒸汽吸收式LiBr/H2O吸收式换热器的传热及热力学性能
DOI：
10.1080/01457632.2013.863550
复制
发表时间：
2014-01
影响因子：
2.3
通讯作者：
Tao Bai
中科院分区：
文献类型：
--
作者：
Zhaolong Hao;Qunchang Wang;Shoushi Bo;Tao Bai
本文安装并测试了垂直螺旋管内具有溴化锂水溶液降膜的吸收式热变压器（AHT）。通过实验研究了不同降膜流量、热水流量和操作温度下吸收器的性能系数（COP）、热效率（Eth）和传热系数的变化。结果表明，系统的性能系数和热效率随着溴化锂溶液流量的增加而降低，热水流量对COP和Eth的影响不显着。实验中可用的COP高于0.4。吸收塔的传热传质系数随着溴化锂溶液流量的增大而增大，达到400W/m2/K和0.013 kg/m2/s（余热温度90℃）。吸收器的传热系数随着余热温度的升高而增大，随着冷却水温度的升高而减小。同时，利用计算机程序ABSIM（吸收模拟）对AHT系统进行仿真，并将仿真结果与实验数据进行比较。
In this paper, an absorption heat transformer (AHT) with falling film of aqueous LiBr solution inside vertical spiral tubes is installed and tested. The variations of coefficient of performance (COP), thermal efficiency (Eth ), and the heat transfer coefficient of the absorber at different falling film flow rates, hot water flow rates, and operating temperatures are investigated experimentally. The results demonstrated that the coefficient of performance and thermal efficiency of the system decrease with the increase in the flow rate of LiBr solution, and the influence of flow rate of hot water on COP and Eth is insignificant. The available COP in the experiments is higher than 0.4. The heat and mass transfer coefficients of the absorber increase with the increase of the flow rate of LiBr solution, up to 400W/m2/K and 0.013 kg/m2/s (temperature of waste heat is 90°C). The heat transfer coefficient of the absorber increases with the increase of the temperature of waste heat, and decreases with the increase of the cooling water temperature. Meanwhile, the computer code ABSIM (Absorption Simulation) is used to simulate the AHT systems, and the simulated results are compared with the experimental data.
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DOI：
10.1016/s0140-7007(03)00078-1
发表时间：
2003-12
期刊：
International Journal of Refrigeration-revue Internationale Du Froid
影响因子：
--
作者：
Raisul Islam;N. E. Wijeysundera;J. C. Ho
通讯作者：
Raisul Islam;N. E. Wijeysundera;J. C. Ho
影响因子：
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作者：
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影响因子：
6.4
作者：
Ma, XH;Chen, JB;Feng, ZH
通讯作者：
Feng, ZH
影响因子：
1.7
作者：
J. Yoon;O. Kwon;C. Moon
通讯作者：
J. Yoon;O. Kwon;C. Moon
DOI：
10.1016/s0140-7007(00)00051-7
发表时间：
2001-09
期刊：
International Journal of Refrigeration-revue Internationale Du Froid
影响因子：
--
作者：
G. Grossman;A. Zaltash
通讯作者：
G. Grossman;A. Zaltash