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首页> 外文期刊>Energy Conversion & Management >Numerical evaluation of thermal performances of diffusion absorption refrigeration using 1,3-dimethylimidazolylium dimethylphosphate/methanol/helium as working fluid
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Numerical evaluation of thermal performances of diffusion absorption refrigeration using 1,3-dimethylimidazolylium dimethylphosphate/methanol/helium as working fluid

机译：1,3-二甲基咪唑基二甲基磷酸二甲酯/甲醇/氦作为工作流体的扩散吸收式制冷热性能的数值评估

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摘要

The thermal performances of diffusion-absorption refrigeration using 1,3-dimethylimidazolylium dimethylphosphate/methanol/helium as working fluid were numerically analyzed. The operating characteristics of bubble pump, boiler, and evaporator were investigated. The variations in the coefficient of performance and exergy efficiencies with different heat inputs of the bubble pump and boiler were simulated and discussed. The thermal performances were compared with those of the butaneonane/helium and lithium bromide/water/helium systems. The trend of variation in coefficient of performance is accordance to that of the experimental results for butaneonane/helium system. The optimal coefficient of performance of the proposed system was lower than that of the lithium bromide/water/helium system. But the proposed system possessed the advantages of non-crystallization and non-corrosion, and it could operate at a higher boiler temperature. The exergy losses of each component were calculated and compared with one another. The largest four exergy losses occurred in the condenser, absorber, boiler, and bubble pump, which accounted for approximately two thirds of the total exergy input. The main reason for the exergy loss of the diffusion absorption refrigeration system was the heat transfer with temperature difference.
机译：数值分析了以1，3-二甲基咪唑基二甲基磷酸二甲酯/甲醇/氦为工作流体的扩散吸收式制冷的热性能。研究了气泡泵，锅炉和蒸发器的运行特性。模拟并讨论了随着鼓泡泵和锅炉的不同热输入而产生的性能系数和火用效率的变化。将热性能与丁烷/壬烷/氦气和溴化锂/水/氦气系统的热性能进行了比较。性能系数的变化趋势与丁烷/壬烷/氦气系统的实验结果一致。拟议系统的最佳性能系数低于溴化锂/水/氦气系统。但该系统具有非结晶，不腐蚀的优点，可以在较高的锅炉温度下运行。计算了每种成分的火用损失，并将其相互比较。最大的四个火用损失发生在冷凝器，吸收器，锅炉和气泡泵中，约占总火用输入的三分之二。扩散吸收式制冷系统的火用损失的主要原因是随着温度差的传热。

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