CIESC Journal ›› 2014, Vol. 65 ›› Issue (6): 2085-2091.doi: 10.3969/j.issn.0438-1157.2014.06.019

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Analysis on heat transfer process with temperature control by module type ice storage within confined space

LIU Yingshu1,2, JIA Yanxiang1, SUN Shufeng1, SONG Weixin1   

  1. 1. School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China;
    2. Beijing Engineering Research Center for Energy Saving and Environmental Protection, University of Science and Technology Beijing, Beijing 100083, China
  • Received:2013-09-10 Revised:2013-11-21 Online:2014-06-05 Published:2013-12-10
  • Supported by:

    supported by the Fundamental Research Funds for the Central Universities (FRF-SD-12-007B).

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Abstract: Aiming at the passive temperature control problem in confined spaces, we investigate the heat transfer and thermodynamic characteristics of module type ice temperature control process with mathematical models and experiments. A model for phase transition refrigeration by cool storage module is established, and with the mathematical expression for wall heat transfer coefficient, effective cooling time and cooling rate are derived. The relative error between the theoretical effective cooling time and experimental one is less than 5%. The results indicate that the wall heat transfer coefficient and cooling rate are proportional to environment temperature and relative moisture, and inversely proportional to cooling time. The correction factor equation for environment temperature and moisture is established and utilized for revising the mathematical models of storage module cooling rate and effective cooling time. These results provide important reference to the application of passive phase-transition refrigeration in confined space.

Key words: confined space, temperature control by ice storage, phase change, heat transfer, thermodynamics

CLC Number: 

  • TQ021.3
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