• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2021, Vol. 57 ›› Issue (8): 255-264.doi: 10.3901/JME.2021.08.255

• 可再生能源与工程热物理 • 上一篇    

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运行模式及参数对吸附制冷系统性能的影响

朱龙潜1, 吴池力2, 贺伟1, 罗森文1, 胡韩莹3   

  1. 1. 广州市香港科大霍英东研究院 广州 510000;
    2. 香港科技大学霍英东研究院 中国香港 999077;
    3. 广州市万宝集团有限公司 广州 510000
  • 收稿日期:2020-01-03 修回日期:2020-09-02 出版日期:2021-04-20 发布日期:2021-06-15
  • 通讯作者: 吴池力(通信作者),男,1984年出生,博士,研究助理教授,硕士研究生导师。主要研究方向为室内空气质量、吸附制冷、小型风力发电和电池热管理等。E-mail:chiliwu@ust.hk
  • 作者简介:朱龙潜,男,1988年出生,博士,研究助理教授。主要研究方向为吸附制冷、冷凝、纳米涂层等。E-mail:lzhuac@connect.ust.hk
  • 基金资助:
    广东省博士后(219600)、广州市科技(201807010097,201907010036)和南海科大专项资金(FSNH-18FYTRI01)资助项目。

Investigation of the Effect of Operating Sequences and Conditions on the Cooling Performance of Adsorption Cooling System

ZHU Longqian1, WU Chili2, HE Wei1, LUO Senwen1, HU Hanying3   

  1. 1. Guangzhou HKUST Fok Ying Tung Research Institute, Guangzhou 510000;
    2. Fok Ying Tung Graduate School, The Hong Kong University of Science and Technology, Hong Kong 999077, China;
    3. Guangzhou Wanbao Group Company Limited, Guangzhou 510000
  • Received:2020-01-03 Revised:2020-09-02 Online:2021-04-20 Published:2021-06-15

摘要: 因为气候变暖及能源短缺,新能源制冷技术受到了越来越多的关注。为了验证吸附制冷技术在实际应用中实现节能减排的潜力及静电喷涂技术在吸附制冷系统中应用的可行性,研发一台双箱吸附制冷系统。吸附剂由硅胶构成,涂敷式吸附床由静电喷涂技术喷涂而成。研发了一种新型回质回热运行模式,为了探讨该运行模式对系统性能的影响,设计、测试并对比了多种运行模式,发现添加了该新型运行模式具有一定的优越性,相对于基本运行循环性能提升了113.7%。试验中通过控制变量法,对多个运行参数进行了研究及优化,例如:吸附/脱附时间、回质时间、回热时间、冷却水进水温度、热水进水温度等。发现各个运行参数对系统性能均有不同程度的影响。在25℃冷却水进水温度、90℃热水进水温度、16℃载冷水进水温度、660 s吸附/脱附时间、85 s回质时间、50 s回热时间、2 kg/min载冷水流速、8 kg/min热水以及冷却水流速的工况下,系统能效比为0.25、单位制冷量为180.4 W/kg。由试验结果可见,吸附制冷系统以及由静电喷涂技术制作而成吸附床对节能减排有促进作用,有一定的应用前景。

关键词: 吸附制冷系统, 运行模式, 运行参数, 静电喷涂, 系统性能

Abstract: Because of the global warming and energy shortage, new energy cooling technologies have received more and more attention. In order to verify the potential of the adsorption cooling technology in the real application and the feasibility of the electrostatic coating method in an adsorption cooling system, a double-bed adsorption chiller was built. In this chiller, silica gel was used as the adsorbent, and the coated adsorbent beds were prepared with the electrostatic coating method. A novel heat and mass recovery phase was developed. In order to investigate its effect on the performance, various operating sequences were designed and tested. It was found that this novel operating sequence had a better performance than the basic operating sequence, which showed an improvement of 113.7%. Various operating conditions for example, adsorption/desorption phase time, mass recovery time, heat recovery phase time, cooling water inlet temperature, and hot water inlet temperature, were investigated and optimized with the control variate method. It was found that the operating conditions had significant influence on the system performance. The coefficient of performance (COP) is recorded at about 0.25, while the specific cooling power (SCP) is about 180.4 W/kg under the operating condition of about 25 ℃ cooling water inlet temperature, 90 ℃ hot water inlet temperature, 16 ℃ chilled water inlet temperature, 660 s of adsorption/desorption phase time, 85 s of mass recovery time, 50 s of heat recovery time, 2 kg/min chilled water flow rate, and 8 kg/min hot water and cooling water flow rate. According to the experimental results, it was found that the adsorption chiller and the coated adsorbent bed had a positive impact on the energy-saving and a great potential on the real application.

Key words: adsorption chiller, operating sequence, operating condition, electrostatic coating, system performance

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