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Dynamic modeling of thermal conditions for hot-water district-heating networks

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Abstract

To investigate the dynamic characteristics of the thermal conditions of hot-water district-heating networks, a dynamic modeling method is proposed with consideration of the heat dissipations in pipes and the characteristic line method is adopted to solve it. Besides, the influences of different errors, space steps and initial values on the convergence of the dynamic model results are analyzed for a model network. Finally, a part of a certain city district-heating system is simulated and the results are compared with the actual operation data in half an hour from 6 secondary heat stations. The results indicate that the relative errors for the supply pressure and temperature in 5 stations are all within 2%, except in one station, where the relative error approaches 4%. So the proposed model and algorithm are validated.

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Authors and Affiliations

  1. School of Thermal Energy Engineering, Shandong Jianzhu University, Jinan, 250101, China

    Shou-jun Zhou  (周守军) & Min Guo  (郭敏)

  2. School of Energy and Power Engineering, Shandong University, Jinan, 250061, China

    Mao-cheng Tian  (田茂诚)

  3. Department of Computer Science and Technology, Shandong University of Finance and Economics, Jinan, 250014, China

    You-en Zhao  (赵有恩)

Authors
  1. Shou-jun Zhou  (周守军)
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  2. Mao-cheng Tian  (田茂诚)
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  3. You-en Zhao  (赵有恩)
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  4. Min Guo  (郭敏)
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Corresponding author

Correspondence to Shou-jun Zhou  (周守军).

Additional information

Project supported by the Scientific Development Program of Shandong Province (Grant No. 2012GGB01071).

Biography: ZHOU Shou-jun (1974-), Male, Ph. D., Associate Professor

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Zhou, Sj., Tian, Mc., Zhao, Ye. et al. Dynamic modeling of thermal conditions for hot-water district-heating networks. J Hydrodyn 26, 531–537 (2014). https://doi.org/10.1016/S1001-6058(14)60060-3

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  • DOI: https://doi.org/10.1016/S1001-6058(14)60060-3

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