化工进展Issue(1)：69-74,6.DOI:10.16085/j.issn.1000-6613.2015.01.012
CO2水合物浆在水平圆管中的传热特性
Heat transfer characteristics of CO2 hydrate slurry in horizontal circular tube
摘要
Abstract
The flow and heat transfer characteristics of CO2 hydrate slurry in horizontal circular tube was studied experimentally. The dissociation properties of CO2 hydrate slurry was investigated using the electric heating water around the tube method. The analysis of phase transition and heat transfer characteristics of CO2 hydrate slurry indicated that the phase transition temperature of CO2 hydrate slurry was at 8—12℃. The heat transfer characteristics of CO2 hydrate slurry with 13.2%(vol) solid fraction in a 8 mm straight stainless steel horizontal circular tube were studied at the flow rate of 0.45 m/s in a dynamic loop. The corresponding local convective heat transfer coefficient in horizontal circular tube increased and then stayed constant and the range was calculated to be 1500—1800 W/(m2·K). The results showed that the largest corresponding convective heat transfer coefficient appeared in the phase transition field of CO2 hydrate slurry. The influences of heating power on tube wall temperature and the convective heat transfer coefficient were discussed respectively. It was discovered that the heating power had a strong effect on wall temperature. The phase transition effect of CO2 hydrate slurry can be used to enhance the heat transfer and increase the heat transfer efficiency in related applications.关键词
二氧化碳/水合物浆/传热/相变Key words
carbon dioxide/hydrate slurry/heat transfer/phase transition分类
化学化工引用本文复制引用
刘妮,由龙涛,张亚楠,柳秀婷..CO2水合物浆在水平圆管中的传热特性[J].化工进展,2015,(1):69-74,6.基金项目
国家自然科学基金（50706028）及上海市教委科研创新项目（12YZ106）。 （）
