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Absorption of Ammonia into Water 氨在水中的吸收
ANSI/ASHRAE标准15-1989建议了从制冷系统中释放氨时的收集程序。该程序利用系统中每磅氨的1加仑静水。或者,该标准建议氨水混合器在每磅/分钟氨水2 gpm的条件下运行。为评估这些程序而进行的实验使用了一个接收容器,其中使用水或水喷雾来吸收氨。制造了一个使用不锈钢织物的氨分配器,以彻底混合氨和静水。相对于ANSI/ASHRAE标准15-1989建议的氨水比,90%的释放氨水蒸汽被静水吸收。随着液氨释放到静水中,所有的氨都被吸收了。 使用带有喷水装置的氨水混合器可吸收86%释放的氨水蒸汽。氨吸收的分析模型预测测量的吸收量在正负15%以内。实验观察到,水中截留的氨的解吸会导致液体混合物中的氨浓度在50天内降低约2倍。这些结果仅适用于本研究的实验装置配置。关键词:吸收式制冷,制冷,泄漏,氨,水,计算,测量,实验引文:ASHRAE交易,第97卷,Pt。1991年,纽约
ANSI/ASHRAE Standard 15-1989 suggest a procedure for trapping ammonia when it is released from a refrigeration system. The procedure utilises one gallon of standing water for every pound of ammonia in the system. Alternatively, the standard suggests that ammonia-water mixers operate under the conditions of 2 gpm of water per lb/min of ammonia. Experiments conducted to evaluate these procedures used a receiving vessel in which water or a water spray was used to absorb ammonia. An ammonia distributor utilising stainless steel fabric cloth was constructed to thoroughly mix the ammonia and standing water. Relative to the ammonia-water ratios recommended by, ANSI/ASHRAE Standard 15-1989, 90% of the released ammonia vapour was absorbed in standing water. With the release of liquid ammonia to standing water, all the ammonia was absorbed. Use of the ammonia-water mixer with a water spray absorbed 86% of the released ammonia vapour. Analytical models for ammonia absorption predict measured absorption quantities to within plus or minus 15%. Desorption of ammonia trapped in water was experimentally observed to result in the decrease of ammonia concentration in the liquid mixture by a factor of about 2 in 50 days. These results are valid only for the experimental apparatus configuration of this study.KEYWORDS: absorption refrigeration, refrigeration, leaking, ammonia, water, calculating, measuring, experiment
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