摘要
太阳能保证率是评价太阳能热水系统节能效果的重要指标,但实际运行情况表明,该评价指标具有一定的局限性,且仅按照此评价指标对热水系统进行评价达不到预期的节能效果。鉴于此,文章以天津某住宅的集中式太阳能热水系统作为研究对象,建立该热水系统的数学模型,并对该热水系统的性能指标进行模拟计算。文章基于模拟结果,研究了集中式太阳能热水系统全年的运行性能以及用户用水量、控制策略对该热水系统运行性能的影响,提出了应采用太阳能保证率、太阳能利用率、常规能源有效替代率和系统散热比4个参数作为太阳能热水系统的性能评价指标,以及适当减少供水循环时间的控制策略。
Solar fraction is important index to evaluate the energy saving effect of solar hot water system. In fact, it has the certain limitation and fails to achieve the energy saving effect if you evaluate the solar hot water system by it only. So, the article takes a certain residential centralized solar hot water system of Tianjin as the object of study and we establish the mathematical model and carry out the simulated calculation to its performance. Based on the simulated results, we conduct a series of study,which include system performance throughout the year, water consumption and control strategies have the effects on system performance and put forward taking solar fraction, solar energy utilization efficiency, conventional energy efficient replacement rate, system heat dissipation rate four parameters as system performance evaluation index as well as the control strategy of reducing the water cycling time properly.
出处
《可再生能源》
CAS
北大核心
2017年第4期613-620,共8页
Renewable Energy Resources
基金
国家"十三五"重点研发计划项目子课题(2016YFC0700104)
北京市节能减排协同创新中心项目(02058415002)
关键词
集中式太阳能热水系统
运行性能
控制策略
centralized solar hot water system
system performance
control strategy
作者简介
陈红兵（1977-），博士，副教授，研究方向为太阳能PV/T系统、相变流体。E—mail：chenhongbing@bucea．edu．cn
