| 摘要: |
| 本文设计开发了一种吸附式制冷系统，采用分体式双床结构，以85~100 ℃的低品位热水作为驱动热源，通过两个吸附床对制冷剂-水的交替吸附和解吸，实现连续制冷。吸附床采用翅片管式换热器，翅片表面涂覆了新型研制的13X分子筛-氯化钙复合吸附剂，涂覆厚度仅0.15 mm，加速了吸附/解吸速率以及传热速率。蒸发器采用盘管和水盘结构，且从上而下呈阶梯状间隔分布，保证蒸发时换热管表面均进行高效的沸腾换热。冷凝器的设计上增加了不凝气体排放装置，可在系统运行的过程中随时抽取不凝性气体，维持了冷凝器的高换热效率。还从强度、密封性以及装配结构紧凑性等方面对各个换热器箱体结构进行了优化设计。此外，所述吸附制冷系统循环中引入了回质和回热过程。基于此循环模式，对系统性能进行了测试可知：以85 ℃的热水作为解吸热源时，系统制冷功率为7.7 kW，性能系数COP为0.467，SCP为380 W/kg，平均耗电量1.23 kW。 |
| 关键词: 吸附制冷 13X分子筛-氯化钙复合吸附剂 制冷功率 性能系数(COP) 单位吸附剂制冷功率(SCP) 耗电量 |
| DOI： |
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| 基金项目:广东省科技计划(2014B090903007）——万宝集团制冷空调研究院和广东省对外科技合作（2013B050900020）——低品位热源辅助的吸附制冷系统关键技术及应用项目资助。 |
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| The Design and Development of a Split Type Continuous Adsorption Refrigeration System with Two Adsorbent Beds |
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Hu Hanying1, Fang Xujun2, He Wei2
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| (1.Guang Zhou Wanbao Group Co., Ltd., Guang Zhou;2.HKUST Fok Ying Tung Research Institute) |
| Abstract: |
| An adsorption refrigeration system with two beds is designed and developed, which uses hot water of 85~100℃ as the driving heat source. Through the alternating adsorption and desorption of the refrigerant by two adsorption beds, the system can realize continuous refrigeration. The adsorbent beds use fin and tube structure, and the surface of the fin is coated with adsorbent, which is composited by 13X and CaCl2. The coating thickness of the absorbent is only 0.15mm, which can accelerate the adsorption / desorption rate and the heat transfer rate. The evaporator uses coil and water plate structure, and they are stepped with interval and distributed from top to bottom. This structure can ensure that the water is boiling on the surface of the heat exchangers tube. The condenser adds a non-condensable gas discharging device, and the device can discharge non-condensing gas during the system’s operation, which can ensure the high efficiency of the condenser. At the same time, the structure of the cylinder block is optimized from the aspects of strength, sealing and assembly structure. In addition, the mass recovery and heat recovery are added to the adsorption refrigeration cycle. Based on this cycle model, the performance of the system is tested，it is found that when the desorption heat source is 85 ℃ hot water, the system cooling power is 7.7kW, the coefficient of performance is 0.467, the SCP is 380W / kg, and the average power consumption is 1.23 kW. |
| Key words: adsorption refrigeration composite adsorbent 13X/CaCl2 refrigeration capacity coefficient of performance SCP power consumption |
