Numerical study on critical flow velocity of ice slurry in the pipe of ice source heat pump system

被引：4
作者：
Wu T. [1 ]
Zhu N. [1 ]
Hu Z. [2 ]
Luo Z. [1 ]
Hu P. [1 ]
Lei F. [1 ]
机构：
[1] School of Environmental Science and Engineering, Huazhong University of Science and Technology, Hubei, Wuhan
[2] Hubei Fengshen Purification Air Conditioning Equipment Engineering Company Limited, Hubei, Wuhan
来源：
Energy and Built Environment | 2024年 / 5卷 / 04期
关键词：
Critical velocity; Flow in pipeline; Ice packing fraction; Ice slurry;
D O I：
10.1016/j.enbenv.2023.05.002
中图分类号：
学科分类号：
摘要：
The traditional evaporator of water source heat pump system is easy to freeze when the water source temperature is too low in winter. A novel ice source heat pump system is proposed, which can use low temperature surface water to supply heat to buildings. One of the key problems for safe transportation is velocity range of ice slurry in ice outlet pipeline. In order to study the critical flow velocity of ice slurry in the pipe, an Euler model of horizontal straight pipe and 90° elbow pipe were established by Fluent software. The influence of five factors on the critical flow velocity of two kinds of pipes, including initial ice packing fraction, ice particle size, pipe diameter, length of straight pipe and radius curvature of elbow was studied. It found that the initial ice content should be controlled from 10% to 15%. The inlet flow rate was 20% higher than the critical flow rate under the most unfavorable condition. Ice particle size was less than 0.2 mm. The total length of ice discharge pipeline was less than 50 m. Curvature radius of the bend should be met the minimum requirements of the specification of the pipe used. © 2023
引用
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页码：607 / 614
页数：7
相关论文
共 47 条
  • [1] Li J., Hu P., Shi J., Fan Y., Ren J., Chen H., Et al., Results of the cancer screening feasibility study in China: a multicentered randomized controlled trial of lung and colorectal cancer screening, J. Natl. Cancer Center, 1, pp. 132-138, (2021)
  • [2] Zhou X., Yang T., Liang L., Zi X., Yan J., Pan D., Anomaly detection method of daily energy consumption patterns for central air conditioning systems, J. Build. Eng., 38, (2021)
  • [3] Wu R., Sun D., The optimal working conditions and parameters of low temperature heat source peak regulating heating, Acta Energ. Sol. Sin., 26, pp. 69-72, (2005)
  • [4] Tamasauskas J., Poirier M., Zmeureanu R., Kegel M., Sunye R., Development of an integrated solar heat pump concept using ice slurry as a latent storage material, Procedia Environ. Sci., 38, pp. 44-51, (2017)
  • [5] Tamasauskas J., Poirier M., Zmeureanu R., Sunye R., Modeling and optimization of a solar assisted heat pump using ice slurry as a latent storage material, Solar Energy, 86, pp. 3316-3325, (2012)
  • [6] Wu X., Wu R., Wu H., Economic and energy analysis of the Freezing Heat pump system, J. Qingdao Univ. (Natl. Sci. Ed.), 31, pp. 138-142, (2018)
  • [7] Qian J., Sun D., Zhang J., New acquisition condensate heat pump technology and comprehensive heating performance analysis of the system, J. Dalian Univ. Technol., 51, pp. 244-249, (2011)
  • [8] Qian J., Sun D., Zhang C., Theoretical analysis of solidification and heat transfer performance of acquisition condensate heat pump technology, Acta Energ. Sol. Sin., 28, pp. 1200-1205, (2007)
  • [9] Niezgoda-Zelasko B., Zalewski W., Momentum transfer of ice slurry flows in tubes, experimental investigations, Int. J. Refrig., 29, pp. 418-428, (2006)
  • [10] Kitanovski A., Vuarnoz A., Atal-Caesar D., Egoif P.W., Hansen T.M., Doetsch C., The fluid dynamics of ice slurry, Int. J. Refrig., 28, pp. 37-50, (2005)
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