中北大学学报（自然科学版）2016，Vol.37Issue(6)：648-653,6.DOI:10.3969/j.issn.1673-3193.2016.06.016
太阳能喷射制冷系统蒸发器设计参数的优化
Optimization on Design Parameters of Evaporator in Solar Ej ector Refrigeration System
摘要
Abstract
In order to study the effect of evaporator on solar ej ector refrigeration system’s thermal per-formance and choose the evaporator’s optimal design parameters,a model of solar ej ector refrigeration system was established using TRNSYS.Combining with FLUENT,a model of flooded evaporator with phase change was built.Using R141b as working medium,refrigerating capacity Qe and coefficient of performance COPz of the system on 11th of July in typical meteorological year were calculated and ana-lyzed as change of condensing temperature and solar radiation intensity when different outlet and inlet tubes’location X,heat-exchange tubes’spacing Sh and height of initial liquid h were employed.On the basis of all above,design parameters of evaporator were optimized.Results show that the system has better thermal performance with initial liquid at a height of 50% or 55% of cylinder diameter;the sys-tem’s refrigerating capacity is greater when the heat-exchange tubes’spacing is larger;The refrigera-ting capacity of the system is weakened whether outlet and inlet tubes keep too far or too near,while,a horizontal distance of 225 mm or 375 mm from the center of the cylinder helps system presents better thermal performance.关键词
太阳能喷射制冷/系统热性能/满液式蒸发器/设计参数/优化Key words
solar ej ector refrigeration/system’s thermal performance/flooded evaporator/design pa-rameters/optimization分类
通用工业技术引用本文复制引用
张峰峰,田琦,李风雷,白慧峰..太阳能喷射制冷系统蒸发器设计参数的优化[J].中北大学学报（自然科学版）,2016,37(6):648-653,6.基金项目
国家国际科技合作项目(2013DFA61580) （2013DFA61580）
