农业工程学报2011，Vol.27Issue(4)：366-369,4.DOI:10.3969/j.issn.1002-6819.2011.04.064
白米水冷却降温提高抛光后整精米率
Improving head rice rate with water cooling process
摘要
Abstract
In order to reduce the formation and growth of cracks within milled rice kernel caused by air cooling before the firther polishing process, a new technical process was explored.The influences of temperature of cooling water and cooling time on the final temperature of rice, and the effects of water cooling method on the head rice rate of polished rice were investigated on a self-design test-bed for the water-cooling rice.And the complex heat transfer coefficient of rice with water cooling method was determined.The head rice rate of rice after the polishing process was abtained with water and air cooling method respectively.Excel and SAS software were used to analyze the experimental data.The results showed that, the temperature of cooling water and cooling time had significant effects on the final temperature of rice; the complex heat transfer coefficient of rice of 181.13 kJ/(m2·℃·h) was determined; the head rice rate with water cooling was 4 to 9 percentage higher than that with air cooling method when the moisture content of the brown rice was 15％-16％.The results can provide a theoretical basis for water cooling method of rice and design of water cooling equipment.关键词
水冷却降温系统/传热系数/农产品/白米Key words
water-cooling systems/ heat transfer coefficients/ agricultural products/ rice分类
轻工纺织引用本文复制引用
兰海鹏,贾富国,王吉泰,张强,付倩..白米水冷却降温提高抛光后整精米率[J].农业工程学报,2011,27(4):366-369,4.基金项目
东北农业大学博士启动基金(2009RC27),黑龙江省自然科学基金资助(200809) （2009RC27）
