IDEAS home Printed from https://ideas.repec.org/a/eee/renene/v111y2017icp95-104.html
   My bibliography  Save this article

Development of a control model to regulate temperature in a solar receiver

Author

Listed:
  • Najafabadi, Hamed Abedini
  • Ozalp, Nesrin

Abstract

Solar irradiation intermittency is a big challenge in operating the solar thermochemical processes due to its direct effect on flux entry into the cavity reactor/receiver. A control system driven by heat transfer model developed for a receiver can compensate impact of fluctuation in solar radiation. This study presents an optimal dynamics and control strategy assessing the performance of a novel method based on aperture size adjustment in comparison to feedstock flow adjustment. The controller is designed based on a mathematical model representing dynamic behavior of the system. The model tackles transient behavior of the system by coupling unsteady energy balance equation solver with Monte Carlo (MC) ray tracing method. Simulations per numerical model provide thorough comparison of the effectiveness of temperature control via aperture size adjustment versus gas flowrate adjustment in open loop and closed loop circuits. Open loop simulations feature step response method where the results confirm that change in aperture size influences the system dynamics more effective than the change in gas flowrate. Closed loop simulations feature two separate controllers designed to adjust aperture size and gas flowrate. Performance of these controllers are compared in tracking desired setpoints and compensating the effect of fluctuation in solar irradiance as the process disturbance. Results of setpoint tracking simulations show that average settling time of the system controlled by aperture size is 30% lower than the system controlled by gas flow rate which exhibits that control performance by aperture size adjustment is superior. As for disturbance rejection, results obtained by using aperture size based controller reveals that the overshoot of the system is about three times lower than the system controlled by gas flowrate. Efficiency analysis also confirmed that adjusting the aperture size or gas flow rate resulted to the same absorption efficiency in the solar receiver. These findings justify the impact of aperture size as a better parameter for temperature control of a solar receiver.

Suggested Citation

  • Najafabadi, Hamed Abedini & Ozalp, Nesrin, 2017. "Development of a control model to regulate temperature in a solar receiver," Renewable Energy, Elsevier, vol. 111(C), pages 95-104.
    • Handle: RePEc:eee:renene:v:111:y:2017:i:c:p:95-104
    DOI: 10.1016/j.renene.2017.03.071
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0960148117302628
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.renene.2017.03.071?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.

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Li, Lu & Li, Yinshi & Yu, Huajie & He, Ya-Ling, 2020. "A feedforward-feedback hybrid control strategy towards ordered utilization of concentrating solar energy," Renewable Energy, Elsevier, vol. 154(C), pages 305-315.
    2. Fernández-Torrijos, M. & Albrecht, K.J. & Ho, C.K., 2018. "Dynamic modeling of a particle/supercritical CO2 heat exchanger for transient analysis and control," Applied Energy, Elsevier, vol. 226(C), pages 595-606.
    3. Abedini Najafabadi, Hamed & Ozalp, Nesrin, 2018. "An advanced modeling and experimental study to improve temperature uniformity of a solar receiver," Energy, Elsevier, vol. 165(PB), pages 984-998.

    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:renene:v:111:y:2017:i:c:p:95-104. 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/renewable-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.