IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v327y2025ics0360544225021085.html
   My bibliography  Save this article

Transient modelling of heat exchangers using a steady-state model for low heat capacity media

Author

Listed:
  • Granda, Mariusz
  • Trojan, Marcin
  • Taler, Jan
  • Taler, Dawid

Abstract

The paper presents an innovative method for simulating the transients of heat exchangers where fluids with different thermal inertia are considered. The study develops a mathematical model of a double-pipe system in which water and air flow. The discretisation of the spatial derivative of the differential heat conduction equation in cylindrical coordinates was carried out using the FVM (Finite Volume Method). The time solution involves the application of time-marching methods. A novelty is the use of steady-state equations for a fluid with lower thermal inertia, the solution of which is implemented into the system of nonlinear equations of the entire system at each time step. That influences their stable solution at a higher time step value. Studies show that this approach reduces the calculation time from 30 to 50 %. The mathematical modelling was compared with experiment and CFD modelling data. The research has shown that the method accurately obtains the time course of air temperature by approximately 2 %. This approach is becoming increasingly important as the power industry is exposed to unstable operating conditions, which requires additional tracking of power machinery and equipment operating parameters.

Suggested Citation

  • Granda, Mariusz & Trojan, Marcin & Taler, Jan & Taler, Dawid, 2025. "Transient modelling of heat exchangers using a steady-state model for low heat capacity media," Energy, Elsevier, vol. 327(C).
    • Handle: RePEc:eee:energy:v:327:y:2025:i:c:s0360544225021085
    DOI: 10.1016/j.energy.2025.136466
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544225021085
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2025.136466?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:energy:v:327:y:2025:i:c:s0360544225021085. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/energy .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.