东南大学学报（自然科学版）Issue(5)：897-902,6.DOI:10.3969/j.issn.1001-0505.2015.05.014
全玻璃真空管太阳能热水器实验和模拟研究
Experimental and simulation study for all-glass evacuated tube solar water heaters
摘要
Abstract
The water heaters with different tube length and diameter,different coating material and guide plate were built with the research background of solar-assisted fuel cells to study the thermal performance in all-glass evacuated tube solar water heaters through experiment and simulation.The three-dimensional mathematical model of solar water heaters was established to study the enhanced data of heat transfer according to field synergy and entransy principles.The results show that the col-laboration in the jet region of the evacuated tube exit is the best and horizontal vortexs exist in water tank.The guide plate reduces mixed flow of cold and hot fluid,strengthens the flow at the bottom of the evacuated tube and decreases the entransy dissipation in the tube.After the evacuated tube is e-quipped with the guide plate,the temperature gradient in the water tank is reduced and the field syn-ergy degree is higher than those of other water heaters.The water heater with the guide plate should be adopted in natural convection for the thermal field of solar-assisted fuel cells.关键词
太阳能热水器/太阳能辅助燃料电池/全玻璃真空管/场协同/耗散Key words
solar water heaters/solar-assisted fuel cells/all-glass evacuated tube/field synergy principle/entransy dissipation分类
能源科技引用本文复制引用
张涛,韩吉田,田瑞,于泽庭,史汝涛..全玻璃真空管太阳能热水器实验和模拟研究[J].东南大学学报（自然科学版）,2015,(5):897-902,6.基金项目
国家自然科学基金资助项目（51376110）、教育部博士点基金资助项目（2013013110006）、国家基金重大国际（地区）合作研究资助项目（61320106011）． （）
