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Performance investigation of nanostructured composite surfaces for use in adsorption cooling systems with a mass recovery cycle

机译：具有质量恢复循环的吸附冷却系统中纳米结构复合表面的性能研究

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摘要

With an increase of the heat transfer coefficient and condensation rate in a condenser, a lower pressure can be achieved in a desorber, which leads to a dryer adsorber for the next adsorption phase and a better cooling performance in an adsorption cooling system. This study aims to experimentally investigate the condensation rate of different nanostructured surfaces and improve the cooling performance of an adsorption cooling system by coating a superhydrophobic-zeolite 13X adsorbent composite surface in the condenser. An experiment was designed and built to investigate the condensation rate of various nanostructured surfaces on a copper plate. The results show that a water collection rate (condensation rate) of the superhydrophobic-zeolite 13X adsorbent composite surface of 49.3 g/m(2) min is achieved, which shows an enhancement of about 50% compared to that of the copper surface. A mathematic model is developed to estimate the cooling performance of the adsorption cooling system utilizing the composite surface and a mass recovery cycle. The simulation results show that a specific cooling power (SCP) of 231.4 W/kg and a coefficient of performance (COP) of 0.317 are determined, which shows an improvement of 25.0% and 7.8%, respectively, compared to that of the system without coating the nanostructured composite surface.
机译：随着冷凝器中的传热系数和冷凝率的增加，解吸器可以实现较低的压力，这导致干燥器吸附器，用于下一个吸附阶段和吸附冷却系统中的更好的冷却性能。本研究旨在通过在冷凝器中涂覆超疏水 - 沸石13x吸附剂复合表面，通过在实验上研究不同纳米结构表面的冷凝率，提高吸附冷却系统的冷却性能。设计了一个实验，并建立并探讨了铜板上各种纳米结构表面的冷凝率。结果表明，与铜表面相比，实现了49.3g / m（2）分钟的超疏水沸石13x吸附剂复合表面的水收集率（缩合速率），其增强约50％。开发了一种数学模型来估计利用复合表面和质量恢复循环的吸附冷却系统的冷却性能。模拟结果表明，与系统的情况相比，确定了231.4W / kg的特定冷却功率（SCP）和0.317的性能系数（COP）分别显示出25.0％和7.8％的提高涂覆纳米结构复合表面。

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    Zhu L. Q.; Tso C. Y.; Chan K. C.; Wu C. L.; Chen J.; He W.; Luo S. W.; Chao Christopher Y. H.;

  • 作者单位

    Hong Kong Univ Sci &

    Technol Dept Mech &

    Aerosp Engn Kowloon Clear Water Bay Hong Kong Peoples R China;

    Hong Kong Univ Sci &

    Technol Dept Mech &

    Aerosp Engn Kowloon Clear Water Bay Hong Kong Peoples R China;

    Hong Kong Univ Sci &

    Technol Dept Mech &

    Aerosp Engn Kowloon Clear Water Bay Hong Kong Peoples R China;

    Guangzhou HKUST Fok Ying Tung Res Inst Bldg Energy Res Ctr Guangzhou Guangdong Peoples R China;

    Guangzhou HKUST Fok Ying Tung Res Inst Bldg Energy Res Ctr Guangzhou Guangdong Peoples R China;

    Guangzhou HKUST Fok Ying Tung Res Inst Bldg Energy Res Ctr Guangzhou Guangdong Peoples R China;

    Guangzhou HKUST Fok Ying Tung Res Inst Bldg Energy Res Ctr Guangzhou Guangdong Peoples R China;

    Hong Kong Univ Sci &

    Technol Dept Mech &

    Aerosp Engn Kowloon Clear Water Bay Hong Kong Peoples R China;

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  • 正文语种 eng
  • 中图分类 建筑基础科学;
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