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Experimental investigation of a thermo-responsive composite coated heat exchanger for ultra-low grade heat utilization

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  • Zheng, Xu
  • Wan, Tinghao
  • Zhang, Yu
  • Ma, Qianling

Abstract

There is a growing interest in desiccant coated heat exchanger (DCHE)-based systems due to characteristics of isothermal dehumidification and compact structure. To enhance the dehumidification efficiency and reduce the regeneration temperature of DCHE-based systems, a thermo-responsive composite desiccant coated heat exchanger (PSLCHE) was developed. This study focuses on investigating the influence of operating parameters (such as air temperature, relative humidity, regeneration temperature and adsorption/desorption time ratio) on the dynamic performance, average dehumidification capacity (Davg) and thermal coefficient of performance (COPth) of the system. Under the air condition of 30 °C & 60% RH, the PSLCHE demonstrates remarkable performance with the Davg of 7.3 g·kg−1 and COPth of 0.93 at 40 °C. This study provides a route to the design of highly efficient air conditioning systems using thermo-responsive composite for ultra-low grade thermal energy at 40 °C.

Suggested Citation

  • Zheng, Xu & Wan, Tinghao & Zhang, Yu & Ma, Qianling, 2024. "Experimental investigation of a thermo-responsive composite coated heat exchanger for ultra-low grade heat utilization," Energy, Elsevier, vol. 293(C).
    • Handle: RePEc:eee:energy:v:293:y:2024:i:c:s0360544224005711
    DOI: 10.1016/j.energy.2024.130799
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