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。
On the one hand,the refrigeration using the tail gas of the main engine on fishing boat 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.For the fishing vessel main exhaust refrigeration device with 10 kW target cooling capacity,the paper uses the chemical process simulation software Aspen Plus 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 the amount of pure ammonia is a direct factor affecting the cooling capacity,which is affected by the heat load of the generator and the power of the solution pump.By controlling the power of the solution pump,the fluctuation of the heat load of the generator can be slowed down to the ammonia solution.The effect of circulation,stabilize the cooling capacity of the system;for the present refrigeration system,the optimal refrigeration effect can be achieved when the flow rate of the pump is in the range of 355-455 kg/h;the smooth removal of heat in the absorber is the guarantee of the system refrigeration cycle operation.
作者
赵新颖
黄温赟
黄文超
吕续舰
ZHAO Xinying;HUANG Wenyun;HUANG Wenchao;LYU Xujian(Fishery Machinery and Instrument Research Institute,Chinese Academy of Fishery Science,Key Laboratory of Ocean Fishing Vessel and Equipment,Ministry of Agriculture,Shanghai200092,China;Joint Research Laboratory for Deep Blue Fishery Engineering Equipment Technology,Qingdao National Laboratory for Marine Science and Technology,Shanghai 200092,China;School of Energy and Power Engineering,Nanjing University of Science and Technology,Nanjing 210094,China)
出处
《渔业现代化》
CSCD
2019年第5期68-73,共6页
Fishery Modernization
基金
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)”
关键词
吸收式制冷
氨液流动
仿真分析
absorption refrigeration
ammonia flow
simulation analysis
