化工学报
化工學報
화공학보
JOURNAL OF CHEMICAL INDUSY AND ENGINEERING (CHINA)
2014年
10期
4131-4137
,共7页
章学来%赵群志%孟祥来%李春蕾%徐斌
章學來%趙群誌%孟祥來%李春蕾%徐斌
장학래%조군지%맹상래%리춘뢰%서빈
真空%沸石%吸附%制冰%强化
真空%沸石%吸附%製冰%彊化
진공%비석%흡부%제빙%강화
vacuum%zeolite%adsorption%ice-making%strengthening
基于水的真空闪蒸理论,设计了一种吸附作用下闪蒸制冰的实验装置。在一定的预设压力值(400、600、800 Pa)、液面高度(20~50 mm)及初始温度(32、22℃)条件下,进行了有无吸附模块的对比性实验。对实验结果进行了定性分析,结果表明:与无吸附条件相比,在吸附作用下,闪蒸室压力及液体温度下降得更快,沸石吸附模块的存在能够强化真空条件下水的闪蒸。同时分析了液面高度对闪蒸的影响,相同的初始温度、预设压力条件下,液面高度越小,吸附条件下闪蒸室的压力下降得越快。
基于水的真空閃蒸理論,設計瞭一種吸附作用下閃蒸製冰的實驗裝置。在一定的預設壓力值(400、600、800 Pa)、液麵高度(20~50 mm)及初始溫度(32、22℃)條件下,進行瞭有無吸附模塊的對比性實驗。對實驗結果進行瞭定性分析,結果錶明:與無吸附條件相比,在吸附作用下,閃蒸室壓力及液體溫度下降得更快,沸石吸附模塊的存在能夠彊化真空條件下水的閃蒸。同時分析瞭液麵高度對閃蒸的影響,相同的初始溫度、預設壓力條件下,液麵高度越小,吸附條件下閃蒸室的壓力下降得越快。
기우수적진공섬증이론,설계료일충흡부작용하섬증제빙적실험장치。재일정적예설압력치(400、600、800 Pa)、액면고도(20~50 mm)급초시온도(32、22℃)조건하,진행료유무흡부모괴적대비성실험。대실험결과진행료정성분석,결과표명:여무흡부조건상비,재흡부작용하,섬증실압력급액체온도하강득경쾌,비석흡부모괴적존재능구강화진공조건하수적섬증。동시분석료액면고도대섬증적영향,상동적초시온도、예설압력조건하,액면고도월소,흡부조건하섬증실적압력하강득월쾌。
Based on the theory of vacuum flash of water, a flash device is designed for experiment of ice-making under the condition of adsorption. Vacuum preparation of binary ice makes use of the principle of the triple point of water. However, the water flash will inevitably increase the chamber pressure and the pressure will be higher than the triple point (611 Pa). This paper proposes a method using solid adsorbent to maintain the pressure. Based on the initial establishment of a low pressure environment, the flash vapor can be adsorbed by the solid zeolite adsorbent in the closed system. Due to the experimental conditions, only the effect of adsorption modules on the flash is analyzed. At certain preset pressure (400, 600, and 800 Pa), height of liquid film (20-50 mm) and initial temperature (32℃, 22℃), comparative experiments are carried out in the presence or absence of adsorption module. The results show that the flash chamber pressure and temperature of liquid film can be reduced faster with the adsorption. With the adsorption module, vacuum flash of water can be enhanced. With smaller height of liquid film, the flash chamber pressure decreases more quickly at the same initial temperature and preset pressure.