New Working Fluid-Absorbent System for Absorption Refrigerating Machine and Absorption Heat Pump

本文研究了水-甲醇-溴化锂-氯化锌（9wt%水/1wt%甲醇，1wt%溴化锂/1wt%氯化锌）吸收式制冷机和吸收式热泵的性能。测量了其物理性质（密度、粘度、溶解度、蒸汽压和汽液平衡）和热性质（比热和混合积分热）。在不同的温度和吸收剂浓度下进行了密度、粘度、蒸汽压、汽液平衡和比热的测量。在270.35 ~ 389.55K温度范围内测定了溶解度数据。在298.15K下，在吸收剂浓度为0重量%至75.16重量%的范围内获得了积分混合热数据。由实验数据分别关联了蒸汽压、比热和积分混合热的经验公式。从这些观察到的 ...更多信息 数据，构建了浓度-浓度图。利用该浓度-浓度图考察了单级、双效吸收式制冷机、吸收式热泵和吸收式热Transformer的特性。对水-甲醇-溴化锂-氯化锌制冷系统、热泵系统和热Transformer系统的性能特点与各种工质-吸收剂系统进行了比较，并对水-甲醇-溴化锂-氯化锌系统的缓蚀剂进行了实验研究。采用有机缓蚀剂和无机缓蚀剂进行了连续沸腾试验、间歇沸腾试验和高压釜腐蚀试验。在这些腐蚀试验中使用的金属主要是SS 41和铜。结果表明，对不锈钢41和铜的缓蚀效果最好的缓蚀剂为甲苯基三唑、5-甲基苯并三唑、硝酸锂和碳酸锂。少

This investigation was undertaken for obtaining performance characteristics of the water-methanol-lithium bromide-zinc chloride ( 9 weights water / 1 weight methanol , 1 weight lithium bromide / 1 weight zinc chloride ) absorption refrigerating machine and absorption heat pump. The physical properties ( density , viscosity , solubility , vapor pressure and vapor-liquid equilibrium ) and the thermal properties ( specific heat and integral heat of mixing ) were measured. The measurements of density , viscosity , vapor pressure , vapor-liquid equilibrium and specific heat were carried out at various temperatures and absorbent concentrations. Solubility data were obtained in the temperature range of 270.35K to 389.55K. Integral heat of mixing data at 298.15K were obtained in the absorbent concentration range of 0 wt% to 75.16 wt%. The empirical formulas for vapor pressure , specific heat and integral heat of mixing were correlated from experimental data , respectively. From these observed … More data , the enthalpy-concentration chart was constructed. The characteristics of the single stage and double effect absorption refrigerating machines , absorption heat pump and absorption heat transformer were examine by using this enthalpy-concentration chart. The performance characteristics of the water-methanol-lithium bromide-zinc chloride refrigeration , heat pump and heat transformer were compared with that of the various working fluid-absorbent system.On the other hand , a laboratory investigation was carried out in order to find corrosion inhibitors which would be effective in controlling the corrosion for the water- methanol-lithium bromide-zinc chloride system. The experiments were carried out on continuous boiling test , intermittent boiling test and corrosion test in the autoclaves with the use of organic inhibitors and inorganic inhibitors. The metals used in these corrosion tests were mainly SS41 and copper. From these experimental results , the most suitable corrosion inhibitors for SS41 and copper were recognized to be tolyltriazole , 5-methylbenzotriazole , lithium molybdate and lithium nitrate. Less