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  本文選題：粒徑分布　切入點：實驗研究　出處：《制冷學(xué)報》2017年04期 　論文類型：期刊論文

【摘要】：為獲得真空法制得冰漿中冰晶的平均粒徑及粒徑分布規(guī)律,本文以乙二醇水溶液為制冰溶液,采用真空法制備得到冰漿,并通過顯微裝置觀測冰漿中的冰晶形態(tài)。實驗分別研究了攪拌速率、乙二醇初始濃度和含冰率(IPF)對冰晶平均粒徑的影響,并將實驗得到的粒徑分布與正態(tài)分布、對數(shù)正態(tài)分布、伽馬分布和威爾布分布進行對比。結(jié)果表明:不同實驗條件下冰漿中冰晶粒徑分布均可統(tǒng)一用伽馬分布來描述;攪拌速率對冰晶平均粒徑幾乎無影響;冰晶平均粒徑隨溶液初始濃度的增大而減小,當(dāng)乙二醇濃度從1%提高至7%時,冰晶平均粒徑從74.8μm降至34.3μm;含冰率達到一定大小時,才會對冰晶平均粒徑產(chǎn)生較顯著的影響,表現(xiàn)為含冰率越高,平均粒徑越大。
[Abstract]:In order to obtain the law of average particle size and particle size distribution of ice crystals in ice slurry obtained by vacuum method, ice slurry was prepared by vacuum method with ethylene glycol aqueous solution as ice making solution. The effects of stirring rate, initial concentration of ethylene glycol and ice content ratio (IPF) on the average particle size of ice crystals were studied by means of microscopic device, and the particle size distribution, normal distribution and logarithmic normal distribution were obtained. The results show that the particle size distribution of ice crystals in ice slurry can be described by gamma distribution under different experimental conditions, and the mixing rate has little effect on the average particle size of ice crystals. The average particle size of ice crystal decreases with the increase of initial concentration of solution. When the concentration of ethylene glycol increases from 1% to 74.30 渭 m, the average particle size of ice crystal decreases from 74.8 渭 m to 34.3 渭 m, and the average particle size of ice crystal decreases from 74.8 渭 m to 34.3 渭 m. The higher the ice content, the larger the average particle size.
【作者單位】： 福州大學(xué)石油化工學(xué)院;福建工程學(xué)院生態(tài)環(huán)境與城市建設(shè)學(xué)院;
【基金】：國家基礎(chǔ)科學(xué)人才培養(yǎng)基金(J1103303)資助項目~~
【分類號】：TB657.1

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