渔业现代化

渔业现代化

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渔船氨水吸收式制冷系统氨液流动分析

赵新颖1,2，黄温赟1,2，黄文超1,2，吕续舰（1 中国水产科学研究院渔业机械仪器研究所，农业部远洋渔船与装备重点实验室，上海 200092;
2 海洋国家实验室深蓝渔业工程装备技术联合实验室，山东 青岛 266237;
3 南京理工大学能源与动力工程学院，江苏 南京 210094）   

  1. （1 中国水产科学研究院渔业机械仪器研究所，农业部远洋渔船与装备重点实验室，上海 200092;
    2 海洋国家实验室深蓝渔业工程装备技术联合实验室，山东 青岛 266237;
    3 南京理工大学能源与动力工程学院，江苏 南京 210094）
  • 出版日期:2019-10-20 发布日期:2019-12-11
  • 作者简介:赵新颖（1979—），男，高级工程师。研究方向：渔船轮机工程与节能技术。E-mail: zhaoxinying@fmiri.ac.cn
  • 基金资助:
    上海市科技兴农重点攻关项目——渔船主机余热利用制冷保鲜关键技术研究与开发( 2017-02-08-00-07-F00073)

Analysis of ammonia flow in ammonia water absorption refrigeration system of fishing vessels#br#

ZHAO Xinying1,2, HUANG Wenyun1,2, HUANG Wenchao1,2, LV Xujian3(1 Fishery Machinery and Instrument Research Institute, Chinese Academy of Fishery Sciences,#br# Key Laboratory of Ocean Fishing Vessel and Equipment, Ministry of Agriculture, Shanghai 200092, China;#br# 2 Joint Research Laboratory for Deep Blue Fishery Engineering Equipment Technology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, Shandong, China;#br# 3 School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China))   

  1. (1 Fishery Machinery and Instrument Research Institute, Chinese Academy of Fishery Sciences,
    Key Laboratory of Ocean Fishing Vessel and Equipment, Ministry of Agriculture, Shanghai 200092, China;
    2 Joint Research Laboratory for Deep Blue Fishery Engineering Equipment Technology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, Shandong, China;
    3 School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China))
  • Online:2019-10-20 Published:2019-12-11

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摘要： 主机尾气热能制冷一方面能够为渔获物的保鲜提供所需冷量，另一方面能够在降低尾气排放温度的同时,节省大量能源消耗。明确主机余热吸收制冷过程，有助于为渔业发展和环保节能提供必要的参考。针对10 kW目标制冷量的渔船主机尾气吸收式制冷装置，利用化工过程模拟软件Aspen Plus建立仿真模型，对装置制冷过程中的氨液流动进行分析计算，获取溶液泵和冷却泵的性能参数。过程中发现，纯氨析出量是影响制冷量的直接因素，而其又受到发生器热负荷和溶液泵功率等因素的影响；通过控制溶液泵的功率可以减缓发生器热负荷的波动对氨液循环的影响，稳定系统制冷量；对于该仿真模型，当溶液泵流量在355~455 kg/h范围内时，系统可获得最优制冷效果；把吸收器中热量顺利带走是系统制冷循环运行的保障。

关键词: 吸收式制冷, 氨液流动, 仿真分析

Abstract: On the one hand, the refrigeration using the tail gas of the main engine can provide the required cooling capacity for the freshness preservation of the fishes; on the other hand, it can save a lot of energy consumption while reducing the temperature of the tail gas emission as well. To clarify the process of waste heat absorption refrigeration of the main engine is helpful to provide necessary reference for fishery development, environmental protection and energy conservation. For the tail gas absorption refrigeration device of main engine on fishing vessel with 10 kW target cooling capacity, the chemical process simulation software Aspen Plus is used to establish a simulation model to analyze and calculate the ammonia flow in the refrigeration process of the device, and obtain the performance parameters of the solution pump and the cooling pump. During the process, it is found that pure ammonia precipitation is a direct factor affecting the cooling capacity, but it is also affected by the heat load of the generator and the power of the solution pump. By controlling the power of the solution pump, the influence of heat load fluctuation of the generator on ammonia circulation can be reduced, and the cooling capacity of the system can be stabilized; for the simulation model, the optimal refrigeration effect can be achieved when the flow of the solution pump is in the range of 355-455 kg/h; smooth removal of heat in the absorber can guarantee the system refrigeration cycle operation.

Key words: absorption refrigeration, ammonia flow, simulation analysis