摘要
通过对膜蒸馏过程及热电制冷的分析,以前期太阳能空气隙膜蒸馏系统实验数据作为基础数据进行耦合实例计算,定义耦合特性参数、耦合工况、最优耦合工况,建立耦合特性参数方程,通过求解得出采用热电制冷时并非制冷面温度越低膜蒸馏通量越大。针对最优耦合工况的选取,提出最大产水量和最佳经济性2种判定准则。对比2种判定准则发现,仅有少数耦合工况同时满足2种判定准则,且随着料液温度Tf的增大,按照2准则所确定的理论膜蒸馏通量差值在波动中逐渐增大。
According to analyzing membrane distillation process and thermoelectric refrigeration, the coupling case calculation was performed based on the experimental research data of previous solar air gap membrane distillation system, in which coupling characteristic parameters, coupling conditions and optimal coupling conditions were defined, and an equation of the coupling characteristic parameters was established. It was worked out by solving the equation that membrane distillation flux does not become large as temperature of a refrigeration surface becomes low for using the thermoelectric refrigeration. Aiming at selection of the optimal coupling conditions, two determination criteria, namely a maximum water production and an optimal economical efficiency are proposed. It can be found by comparing two determination criteria that only a few coupling operating conditions can satisfy the two determination criteria at same time, and with increase of feed liquid temperature Tf, the difference between theoretical membrane distillation fluxes determined by two criteria increases gradually in fluctuation.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2017年第2期409-415,共7页
Acta Energiae Solaris Sinica
基金
国家自然科学基金(51266007)
风能太阳能利用技术教育部重点实验室(内蒙古工业大学)开放基金(201508)
关键词
膜蒸馏
热电制冷
传质通量
耦合特性参数
最佳耦合工况
判定准则
membrane distillation
thermoelectric refrigeration
mass transfer flux
coupling characteristic parameters
optimal coupling conditions
determination criteria
