太阳能与空气源热泵联合按需分时供暖柔性节能控制策略  

Flexible Energy-Saving Control Strategy of a Solar-ASHP Integrated Heating System Based on Time-Sharing Heat Demand

作　　者：闫秀英[1] 于鹏飞 王登甲[1] YAN Xiuying;YU Pengfei;WANG Dengjia(School of Building Services Science and Engineering,Xi'an University of Architecture and Technology,Xi'an 710048,Shaanxi Province,China)

机构地区：[1]西安建筑科技大学建筑设备科学与工程学院,陕西省西安市710048

出　　处：《分布式能源》2023年第1期1-10,共10页Distributed Energy

基　　金：国家自然科学基金面上项目(52078408);西部绿色建筑国家重点实验室自主课题项目(LSZZ202208)。

摘　　要：结合分时室内热需求的不同,通过设计合理的控制策略对房间进行供暖,将为有辅助热泵的太阳能供暖系统(solar heating system,SHS)带来巨大的节能潜力。在当前西北地区人体差异化热需求研究的基础上,提出太阳能与空气源热泵(air source heat pump,ASHP)联合按需分时供暖柔性节能控制策略,根据不同时段的室内热需求,设置一定的温度波动范围,优化热源出力顺序,使控制系统更具柔性。并通过TRNSYS软件建立联合供暖系统的仿真模型,对3个太阳能资源等级不同地区的某住宅建筑进行不同控制策略下系统的运行研究。结果表明,与常用的“恒温策略”相比,所提出的控制策略可充分利用太阳能,在保证热舒适的前提下通过减少ASHP的工作时长,从而减少高达24%的系统总能耗;所提出的控制策略在高辐照度地区应用更有效。Combining the different indoor heat demands of time-sharing,designing a reasonable control strategy will bring huge energy saving potential to the solar heating system(SHS)with auxiliary heat pump.Based on the existing research on the human body􀆳s differential heat demand in northwest China,this study proposes a flexible energy-saving control strategy of a combined solar and air source heat pump(ASHP)heating system based on timesharing heat demand.Considering the indoor heat demand in different time periods,the corresponding room temperature control range is set and the output sequence of the heat source is optimized.As a result,the control system becomes more flexible.The simulation model of the system is established by TRNSYS,and the operation of the system under different control strategies is studied.A case study of a residential building in three areas with different solar energy resource levels is considered.Compared with the commonly used“thermostatic”control strategy,the proposed control strategy allows the full utilization of the solar energy and a reduction in the total energy consumption by up to 24%through reducing the working time of the ASHP.The results also show that the proposed control strategy is more effective in areas with high radiation intensity.

关 键 词：太阳能供暖系统 柔性控制策略 空气源热泵 分时热需求 节能 

分 类 号：TK51[动力工程及工程热物理—热能工程] TU83[建筑科学—供热、供燃气、通风及空调工程]