摘要
探究适合于匹配小型分布式能源的烟气-热水型溴化锂吸收式制冷机组可降低设备初投资及拓展应用场景,选取某国产130kW烟气-热水型吸收式溴化锂制冷机组为研究对象,通过搭建与之匹配的试验台,测试了该机组冷冻水出口温度和冷却水进口温度对制冷量的影响,并测试了余热烟气进出口温度和热水温度、冷冻水进出口温度、吸收机制冷量、高低发温度随时间的变化规律。研究结果表明,冷冻水出口温度每升高1℃,制冷量提升3-4%,冷却水进口温度每增加2℃,制冷量降低2-6%。烟气进吸收机温度在280-440℃之间变化,出口烟气温度维持在65℃。冷剂泵开启后(约吸收机启动20min),高压和低发溶液出口温度随时间逐步升高,分别稳定在108℃和57℃,冷冻水进出口温度维持在15/10℃左右。吸收机制冷量维持在100-115k W。误差分析得到制冷量和冷冻水出口温度误差分别为8.6%和0.5%,显示了较高的准确度。
To explore the exhaust-gas-and-hot-water-driven absorption chiller suitable for matching small distributed energy sources, it can reduce the initial investment of equipment and expand the application scenarios. This paper selects a domestic130kW double-effect waste heat absorption type lithium bromide refrigeration unit as the research object. By building a matching test bench, the effects of the chilled water outlet temperature and cooling water inlet temperature of the unit on the cooling capacity of the chiller was conducted. Besides, the inlet and outlet temperatures of the flue gas, the temperature of the hot water, the inlet and outlet temperatures of the chilled water, and the cooling of the absorption machine were tested as time changes Moreover,temperatures of solution from high pressure generator and low pressure generator were recorded with time, respectively. Results showed that for every 1℃ increase in the chilled water outlet temperature, the cooling capacity increased by 3-4%, and for every2℃ increase in the cooling water inlet temperature, the cooling capacity decreased by 2-6%. The temperature of the flue gas entering the chiller varied between 280-440℃, and the temperature of the flue gas at the outlet was maintained at 65℃. After the refrigerant pump was turned on(about 20 minutes after the chiller was started), the outlet temperatures of the high-pressure and low pressure solutions gradually increase with time, and were stable at 108 ℃ and 57 ℃, respectively, and the inlet and outlet temperatures of the chilled water were maintained at about 15/10℃. The cooling capacity of the absorption machine remained at100-115kW. Based on the error analysis, the errors of Q and Tout were 8.6% and 0.5%, respectively, indicating the testing results have a good accuracy.
作者
范峻铭
蒋鹏
余健亭
杨光
孟伟
李璐伶
Fan Junming;Jiang Peng;Yu Jianting;Yang Guang;Meng Wei;Li Luling(Shenzhen Engineering Research Centre for Gas Distribution and Efficient Utilization,Shenzhen,518049;Shenzhen Gas Co.,Ltd,Shenzhen,518049)
出处
《制冷与空调（四川）》
2022年第6期854-858,923,共6页
Refrigeration and Air Conditioning
基金
国家重点研发计划(2021YFB4001605)
中国博士后科学基金资助项目(2021M692220,2021M702289)。
关键词
小型分布式能源系统
双效余热吸收式
溴化锂制冷机组
性能测试
Small distributed energy system
Double-effect waste heat absorption
Lithium bromide refrigeration unit
Performance test
