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Design, fabrication and performance evaluation of a compact regenerative evaporative cooler: Towards low energy cooling for buildings

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  • Duan, Zhiyin
  • Zhao, Xudong
  • Li, Junming

Abstract

The urges of reducing energy use and carbon footprint in buildings have prompted the developments of regenerative evaporative coolers (RECs). However, the physical dimensions of RECs have to be designed enormous in order to deliver a large amount of supply airflow rate and cooling capacity. To tackle the issue, this paper develops a large-scale counter-flow REC with compact heat exchanger through dedicated numerical modelling, optimal design, fabrication and experimentation. Using modified ε-NTU method, a finite element model is established in Engineering Equation Solver environment to optimise the cooler's geometric and operating parameters. Based on modelling predictions, the cooler's experimental prototype was optimally designed and constructed to evaluate operating performance. The experiment results show that the cooler's attained wet-bulb effectiveness ranges from 0.96 to 1.07, the cooling capacity and energy efficiency ratio from 3.9 to 8.5 kW and 10.6 to 19.7 respectively. It can provide sub-wet bulb cooling while operating at high intake channel air velocities of 3.04–3.60 m/s. The superior performance of proposed cooler is disclosed by comparing with different RECs under similar operating conditions. Both the cooler's cooling capacity per unit of volume and per unit of airflow rate are found to be 62–108% and 21.6% higher respectively.

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  • Duan, Zhiyin & Zhao, Xudong & Li, Junming, 2017. "Design, fabrication and performance evaluation of a compact regenerative evaporative cooler: Towards low energy cooling for buildings," Energy, Elsevier, vol. 140(P1), pages 506-519.
    • Handle: RePEc:eee:energy:v:140:y:2017:i:p1:p:506-519
    DOI: 10.1016/j.energy.2017.08.110
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    References listed on IDEAS

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    Cited by:

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    2. Rasikh Tariq & Changhong Zhan & Nadeem Ahmed Sheikh & Xudong Zhao, 2018. "Thermal Performance Enhancement of a Cross-Flow-Type Maisotsenko Heat and Mass Exchanger Using Various Nanofluids," Energies, MDPI, vol. 11(10), pages 1-19, October.
    3. Kashyap, Sarvesh & Sarkar, Jahar & Kumar, Amitesh, 2021. "Performance enhancement of regenerative evaporative cooler by surface alterations and using ternary hybrid nanofluids," Energy, Elsevier, vol. 225(C).
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    6. Tariq, Rasikh & Sheikh, Nadeem Ahmed & Livas-García, A. & Xamán, J. & Bassam, A. & Maisotsenko, Valeriy, 2021. "Projecting global water footprints diminution of a dew-point cooling system: Sustainability approach assisted with energetic and economic assessment," Renewable and Sustainable Energy Reviews, Elsevier, vol. 140(C).
    7. Cui, X. & Islam, M.R. & Chua, K.J., 2019. "Experimental study and energy saving potential analysis of a hybrid air treatment cooling system in tropical climates," Energy, Elsevier, vol. 172(C), pages 1016-1026.
    8. Miranda, Nicole D. & Renaldi, Renaldi & Khosla, Radhika & McCulloch, Malcolm D., 2021. "Bibliometric analysis and landscape of actors in passive cooling research," Renewable and Sustainable Energy Reviews, Elsevier, vol. 149(C).
    9. Pandelidis, Demis & Cichoń, Aleksandra & Pacak, Anna & Anisimov, Sergey & Drąg, Paweł, 2018. "Counter-flow indirect evaporative cooler for heat recovery in the temperate climate," Energy, Elsevier, vol. 165(PA), pages 877-894.

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