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Numerical Analysis of Air Flow Around a Hot Water Radiator for Its Structure Improvement

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Energy Solutions to Combat Global Warming

Part of the book series: Lecture Notes in Energy ((LNEN,volume 33))

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Abstract

Hot water radiators are widely used for indoor heating mainly in North China and a large quantity of fossil fuels are needed for heating energy use every year. Therefore, it is important to analyze thoroughly the characteristic of this type of radiators in order to reduce energy use and associated carbon emissions in the building sector of China. Improper design of heating radiator results in excessive energy consumption with uneven temperature distribution, and dust mark on the wall may occur. For the purpose of energy saving and carbon emission reduction, the numerical simulation of the heat transfer and air flow around radiators within heating rooms is necessary to understand the reason for this dust mark and furthermore to modify the radiator configuration. In this paper, the two-dimensional and three-dimensional models were set up, in which both the Navier–Stokes equations and energy equations were solved by using FLUENT® software, with the standard κ-ε turbulence model and SIMPLE algorithm. By analysis of the indoor air velocity field and the distribution of temperature field, the influence on fine dust particles distribution due to air flow around the radiator was discussed to explain the cause of dust formation. Then, the external structure of the radiator was modified to change the flow field patterns using numerical simulation, and consequently to minimize the dust formation for energy reduction and improve indoor beautiful appearance.

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Abbreviations

C P :

Heat capacity (J kg−1 °C−1)

Ρ :

Density (kg/m3)

\( \lambda \) :

Coefficient of thermal conductivity (W m−1 °C−1)

Ε :

Internal emissivity

β :

Thermal expansion coefficient

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Authors and Affiliations

  1. College of Mechanical Engineering, Tianjin University of Science and Technology, Tianjin, 300222, China

    Juan Wang, Zhanyong Li, Ruifang Wang, Qing Xu, Wei Tian & Miaomiao Li

  2. Tianjin Key Laboratory of Integrated Design and On-Line Monitoring for Light Industry & Food Machinery and Equipment, Tianjin, 300222, China

    Juan Wang, Zhanyong Li, Ruifang Wang, Qing Xu, Wei Tian & Miaomiao Li

Authors
  1. Juan Wang
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  2. Zhanyong Li
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  3. Ruifang Wang
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  4. Qing Xu
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  5. Wei Tian
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  6. Miaomiao Li
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Corresponding author

Correspondence to Zhanyong Li .

Editor information

Editors and Affiliations

  1. College of Engineering, Peking University, Beijing, China

    XinRong Zhang

  2. Faculty of Engineering and Applied Science, Department of Mechanical Engineering, University of Ontario, Oshawa, Ontario, Canada

    Ibrahim Dincer

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Wang, J., Li, Z., Wang, R., Xu, Q., Tian, W., Li, M. (2017). Numerical Analysis of Air Flow Around a Hot Water Radiator for Its Structure Improvement. In: Zhang, X., Dincer, I. (eds) Energy Solutions to Combat Global Warming. Lecture Notes in Energy, vol 33. Springer, Cham. https://doi.org/10.1007/978-3-319-26950-4_21

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  • DOI: https://doi.org/10.1007/978-3-319-26950-4_21

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-26948-1

  • Online ISBN: 978-3-319-26950-4

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