双水箱太阳能集中热水系统关键参数优化及建筑类型的适用性研究  

APPLICABILITY STUDY OF KEY PARAMETER OPTIMIZATION AND BUILDING TYPE OF CENTRALIZED SOLAR HOT WATER SYSTEM WITH TWO WATER TANKS

作　　者：孙亮亮[1] 袁艳平[1] 姚盼[1] 曹晓玲[1] 邓志辉[1] 

机构地区：[1]西南交通大学机械工程学院,成都610031

出　　处：《太阳能学报》2016年第10期2569-2577,共9页Acta Energiae Solaris Sinica

基　　金：建筑环境与能源高效利用四川省青年科技创新研究团队项目(2015TD0015);四川省住房和城乡规划建设项目(2013K05);四川省住房和城乡建设厅科研课题(2014K07);中央高校基本科研业务费专项资金(2682015CX038)

摘　　要：为对供热水箱容积、供热水箱控制最低水位、补水泵流量、集热水箱放水温度等关键参数进行系统优化,建立典型的双水箱太阳能集中热水系统仿真模型,以太阳能保证率和集热效率为主优化指标。结果表明:部分工况下供热水箱容积的增大会引起太阳能保证率的增大,但集热器的集热效率会有所减小;对于供热水箱通过水位控制的双水箱太阳能集中热水系统,建筑类型对系统补水泵流量的影响较大;对于集热水箱到供热水箱的热水通过温差控制的热水系统,放水温度应大于用户用水温度;双水箱太阳能集中热水系统,更适于24 h连续供水的建筑类型。In order to systematically optimize the key parameters of centralized solar hot water system with two water tanks, such as the volume and minimum water level of hot water supply tank, flow rate of make-up pump and the supply water temperature of hot collection water tank, the typical numerical simulation model of centralized solar hot water system with two water tanks was set up with main optimization index of solar fraction and collection efficiency. The simulation results indicate that the increase of volume of hot water supply tank can increase the solar fraction and decrease the collection efficiency of solar collectors in some operation conditions. For centralized solar hot water system with two water tanks, if the hot water supply tank is controlled by water level, the effect of building types on flow rate of make-up pump is significant. If the hot water from hot collection water tank to hot water supply tank flows through hot water system with temperature-difference control, the supply water temperature must be higher than user＇ s water temperature. The centralized solar hot water system with two water tanks is better suitable to the building type with 24 h continuous hot water supply.

关 键 词：双水箱太阳能集中热水系统 优化设计 热水负荷特性 适用性 

分 类 号：TK519[动力工程及工程热物理—热能工程]