光伏发电辅助空气源热泵供暖系统研究

doi:10.3969/j.issn.2097-0706.2023.12.002

摘要/Abstract

摘要：

为实现“双碳”目标，国家出台了“煤改电”等政策，针对北方冬季单独使用空气源热泵供暖运行成本高的问题，提出了使用光伏发电系统对热泵进行供电补充的光伏发电辅助空气源热泵供暖系统，基于沈阳市某学校实验室，借助Matlab以及TRNSYS平台构建了系统仿真模型。确定系统运行控制策略后，在最大功率点跟踪控制模式下，对比了不同辐照度下光伏系统输出功率、直流母线电压以及蓄电池充放电过程中的电压电流等参数的变化，分析了整个供暖季的室内外温度、热泵耗电量等参数并对系统的经济性及环境效益进行了计算。分析结果表明：光伏-热泵系统供暖季累计制热量为4 627.66 kW·h，满足热负荷需求且最冷日房间平均温度也能维持在19.12 ℃；光伏-空气源热泵系统费用年值仅为单一热泵系统的56.68%；相比于传统燃煤锅炉，该系统每年可降低CO₂排放974.24 kg，降低SO₂排放量7.89 kg，经济及环保效益显著。

关键词: “双碳”目标, 煤改电, 光伏发电, 空气源热泵, 最大功率点跟踪, 辐照度, 清洁取暖

Abstract:

To achieve the dual carbon target， China has carried out a series of policies，such as "coal to electricity". To control the excessive heating cost resulting from taking air source heat pumps alone for heating in northern China， PV power generation systems are coupled with heat pumps to assist their heating capacity. The simulation model of a solar assisted heat pump （SAHP）heating system is constructed by Matlab and TRNSYS platform in a laboratory of a Shenyang college. With a designed system operation strategy and maximum power point tracking （MPPT） control algorithm， the PV system output under various irradiation， DC bus voltage， voltage and current varying with the charging and discharging of batteries and other parameters of an SAHP heating system are studied. The influences of the indoor and outdoor temperatures， heat pump power consumption on economic and environmental benefits in heating seasons of the system are analyzed. The results show that the total heating capacity of the SAHP system in one heating season is 4 627.66 kW·h，which meets the heating requirement of keeping the indoor temperature above 19.12 ℃. Furthermore， the cost of the SAHP system per heating season is only 56.68% of that of a pure heat pump system. In terms of the environmental benefits， the SAHP system can reduce the CO₂ emission by 974.24 kg and SO₂ emission by 7.89 kg per year， compared with the traditional boiler.

Key words: "dual carbon" target, coal to electricity, PV power generation, air source heat pump, MPPT, irradiation, clean heating

中图分类号:

TK01

张思亮, 祁麟童, 曲浩维, 臧德华, 周文汉, 王立地. 光伏发电辅助空气源热泵供暖系统研究[J]. 综合智慧能源, 2023, 45(12): 10-19.

ZHANG Siliang, QI Lintong, QU Haowei, ZANG Dehua, ZHOU Wenhan, WANG Lidi. Research on solar assisted air source heat pump heating systems[J]. Integrated Intelligent Energy, 2023, 45(12): 10-19.

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设备名称	参数	设计值
光伏组件	装机容量/ kW	2.345
光伏组件	倾角/(°)	51
蓄电池	容量/(kW·h)	10
空气源热泵	额定功率/kW	0.907
空气源热泵	额定制热量/kW	3.56
蓄热水箱	体积/m³	0.15
循环水泵	流量/(m³·h^-1)	1.948 8
循环水泵	功率/kW	0.067

参数	数值
最大功率点处功率/W	335
最大功率点处电压/V	38.00
最大功率点处电流/A	8.82
开路电压/V	46.10
短路电流/A	9.30

设备名称	规格/数量	价格/元
光伏板	7×335 W	6 000
蓄电池	10 kW·h	4 000
空气源热泵	735 W	2 100
蓄热水箱	150 L	600
循环水泵	67 W	90
暖气片	1组	250
控制器	1台	1 000
管路阀门及温度传感器等		500
共计		14 540

运行方式	消耗电能/（kW·h）	年运行费用/元
光伏-热泵系统	935.18	467.59
单一热泵系统	1 980.25	990.13

运行方式	初投资	年运行费用	费用年值
光伏-热泵系统	14 540	467.59	976.95
单一热泵系统	4 540	990.13	1 723.62