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首页> 外文期刊>International Journal of Refrigeration >Performance analysis and evaluation of a commercial absorption-refrigeration water-ammonia (ARWA) system
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Performance analysis and evaluation of a commercial absorption-refrigeration water-ammonia (ARWA) system

机译：商用吸收式制冷氨水系统的性能分析和评估

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摘要

The Robur absorption-refrigeration water-ammonia (ARWA) system is analyzed using Aspen Plus flowsheet simulator. The results are compared with experimental and some manufacturer data reported in the open literature. Among performance parameters analyzed are coefficient of performance (COP), heat duties of the evaporator, absorber, and the condenser, refrigerant concentration in the weak and strong solution, and flow rates of the weak solution and the flow rate of refrigerant passing through the evaporator. In general, a very good agreement between the simulator's results and the experimental measurements was found. Also, results obtained for the effect of separator (input) heat duty on the COP agree well with the reported experimental data with a maximum percentage deviation of 1.8%. Efficiency of the separator in splitting off the refrigerant at the column top is shown to be of crucial importance; COP increased by 15% in going from 1 to 5 theoretical equivalent mass transfer stages in the separator. Some innovative modifications to Robur cycle aimed at enhancing the separator operation have shown a promising improvement in the COP. In particular, introducing a throttling process directly before the separator can alleviate the separator heat load and enhance the COP by up to 20%. Use of stripping gas injected at the bottom of the boiler is another strategy that has been investigated in this work.
机译：使用Aspen Plus流程模拟器分析Robur吸收式制冷氨水（ARWA）系统。将结果与公开文献中报道的实验数据和一些制造商数据进行比较。分析的性能参数包括性能系数（COP），蒸发器，吸收器和冷凝器的热负荷，稀溶液和浓溶液中的制冷剂浓度，稀溶液的流量和流经蒸发器的制冷剂的流量。通常，在模拟器的结果和实验测量结果之间找到了很好的一致性。此外，获得的分离器（输入）热负荷对COP的影响结果与报道的实验数据非常吻合，最大百分比偏差为1.8％。分离器在塔顶分离出制冷剂的效率非常重要。在分离器中从1到5的理论当量传质阶段，COP增加了15％。旨在增强分离器操作的Robur循环的一些创新性改进已显示出COP有望实现改善。特别是，在分离器之前直接引入节流过程可以减轻分离器的热负荷，并提高COP达20％。使用注入到锅炉底部的汽提气是这项工作中研究的另一种策略。

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