储能颗粒粒度分布对相变储能石膏板导热系数的影响  

Effect of Particle Size Distribution of Power Storage Clay on Conductivity Factor of Phase Transformation Power Storage Gypsum Board

作　　者：朱圣晓[1] 蔡其生[2] 林丽莹[1] 胡小芳[1] 

机构地区：[1]华南理工大学机械与汽车工程学院,广东广州510640 [2]合肥水泥研究设计院,安徽合肥230051

出　　处：《中国粉体技术》2009年第3期56-59,共4页China Powder Science and Technology

摘　　要：以石蜡作为相变储能材料，不同粒径的轻质多孔陶粒作为吸附基体，通过包封制备定形相变储能颗粒，并将相变储能颗粒掺入石膏中制备相变储能石膏板试样。采用数字成像设备及图像处理软件和导热测试仪分别测得储能颗粒的粒度分布和石膏板试样的导热性能，运用灰色关联分析原理计算了储能颗粒的粒度分布与石膏板导热系数的灰色关联度，表征了储能颗粒各粒度级配对相变储能材料的导热性能的影响。计算表明，储能颗粒中粒级在0～3mm之间的颗粒对储能石膏板导热系数有较小的增强作用；粒级在3～14mm之间的颗粒，尤其是粒级在3～4mm之间的颗粒对储能石膏板导热系数有较强的减弱作用。The phase transformation power storage gypsum was prepared by using gypsum and power storage clay which utilizing paraffin as a latent heat storage material and porous clay of different particle size as a supporting matrix. The particle size distribution of power storage clay and conductivity factor of phase transformation power storage gypsum were measured respectively by digital camera and image process software and heat test machine, and the grey relational degree between the particle size distribution of power storage clay and the conductivity factor of phase transformation power storage gypsum was calculated by means of grey relational rule in order to investigate the influence of the particle size distribution of power storage clay on conductivity factor of phase transformation power storage gypsum. The calculated results indicated that the particles whose size ranged from 0 to 3 mm could enhance the conductivity factor;for the particles whose size ranged from 3 mm to 14 mm,especially those whose size ranged from 3 mm to 4 mm, the circumstance was reverse distinctly.

关 键 词：储能颗粒 粒度分布 导热系数 灰色关联度 

分 类 号：TU55[建筑科学—建筑技术科学]