IDEAS home Printed from https://ideas.repec.org/a/eee/renene/v244y2025ics0960148125003271.html
   My bibliography  Save this article

Performance, energy and exergy analysis of solar-assisted heat pump drying system with heat recovery: A comprehensive experimental study

Author

Listed:
  • Yao, Muchi
  • Li, Ming
  • Zhang, Yi
  • Wang, Yunfeng
  • Li, Guoliang
  • Zhang, Ying
  • Deng, Zhihan
  • Xing, Tianyu
  • Zhu, Yinlong

Abstract

This study introduces an innovative solar-assisted heat pump drying (SAHPD) system incorporating multi-stage waste heat recovery technology to enhance energy efficiency, environmental sustainability, and economic feasibility for diverse drying applications. Through comprehensive experimental analysis under solar drying (SD), heat pump drying (HPD), and SAHPD modes, the SAHPD system achieved the highest performance metrics. The average coefficient of performance (COP) in SAHPD mode reached 2.49, a 34.59 % improvement over the HPD mode without heat recovery (1.85). Notably, the multi-stage heat recovery system demonstrated significant advantages, with a heat recovery rate of 5040.69 kJ/h, marking a 228.03 % increase compared to single-stage recovery. The condenser heating power increased from 8.83 kW to 10.93 kW, reflecting notable energy efficiency improvements. Additionally, the system's specific moisture extraction rate (SMER) was 1.53 kg/kWh, far surpassing HPD's 0.576 kg/kWh, highlighting its superior moisture extraction efficiency. The SAHPD system also proved highly cost-effective, with a payback period of just 0.97 years These results confirm the SAHPD system's potential as a sustainable, energy-efficient, and economically viable solution for agricultural products drying processes, setting a benchmark for integrating solar energy with heat recovery technologies.

Suggested Citation

  • Yao, Muchi & Li, Ming & Zhang, Yi & Wang, Yunfeng & Li, Guoliang & Zhang, Ying & Deng, Zhihan & Xing, Tianyu & Zhu, Yinlong, 2025. "Performance, energy and exergy analysis of solar-assisted heat pump drying system with heat recovery: A comprehensive experimental study," Renewable Energy, Elsevier, vol. 244(C).
    • Handle: RePEc:eee:renene:v:244:y:2025:i:c:s0960148125003271
    DOI: 10.1016/j.renene.2025.122665
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0960148125003271
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.renene.2025.122665?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:renene:v:244:y:2025:i:c:s0960148125003271. 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.