The use of renewable energy is an important technical way to achieve building energy conservation and environmental protection. In this study, a new type of dual-source building energy supply system with heat pumps and energy storage, which can solve the problems of unstable operation and low reliability of a single-energy system and high investment and operation cost of existing multi-source energy systems, is proposed. In this system, photovoltaic–thermal water is used as the low-temperature heat source of the water source heat pump and the air source heat pump as the auxiliary energy supply device to realize cascade utilization of energy. “Peak load shifting” and minimization of building energy consumption and operation costs are realized by storing energy (cold and heat) at night when electricity prices are low. On the basis of the long-term monitoring data of the energy supply system for an office building, load-forecasting and system performance models are established, and the operation strategy in winter and summer is optimized. Then, the whole-year operation of the system is simulated and analyzed. Results show that the optimized system runs efficiently and can save approximately 10% of operating costs compared with the situation before optimization. The operating cost of the system is 55% of that of the conventional air source heat pump system, and its dynamic payback period is 3.66 years. The proposed system is a form of building energy supply system worthy of popularization and application in cold regions.

利用可再生能源是实现建筑节能和环境保护的重要技术手段。本研究建立了一种新型的带热泵和储能的双源建筑能源供应系统，可以解决单能源系统运行不稳定，可靠性低以及现有多源投资和运行成本高的问题。能源系统，建议。在该系统中，光伏热水被用作水源热泵的低温热源，而空气源热泵被用作辅助能源供应设备，以实现能源的级联利用。通过在夜间电价低的时候存储能量（冷热），可以实现“峰值负荷转移”，并将建筑能耗和运营成本降至最低。根据办公楼能源供应系统的长期监测数据，建立了负荷预测和系统性能模型，并优化了冬季和夏季的运行策略。然后，对系统的全年运行进行了仿真和分析。结果表明，与优化前相比，优化后的系统可以高效运行，并可以节省约10％的运营成本。该系统的运行成本是传统空气源热泵系统的55％，其动态投资回收期为3.66年。所提出的系统是值得在寒冷地区推广应用的建筑能源供应系统的一种形式。优化了冬季和夏季的运营策略。然后，对系统的全年运行进行了仿真和分析。结果表明，与优化前相比，优化后的系统可以高效运行，并可以节省约10％的运营成本。该系统的运行成本是传统空气源热泵系统的55％，其动态投资回收期为3.66年。所提出的系统是值得在寒冷地区推广应用的建筑能源供应系统的一种形式。优化了冬季和夏季的运营策略。然后，对系统的全年运行进行了仿真和分析。结果表明，与优化前相比，优化后的系统可以高效运行，并可以节省约10％的运营成本。该系统的运行成本是传统空气源热泵系统的55％，其动态投资回收期为3.66年。所提出的系统是值得在寒冷地区推广应用的建筑能源供应系统的一种形式。该系统的运行成本是传统空气源热泵系统的55％，其动态投资回收期为3.66年。所提出的系统是值得在寒冷地区推广应用的建筑能源供应系统的一种形式。该系统的运行成本是传统空气源热泵系统的55％，其动态投资回收期为3.66年。所提出的系统是值得在寒冷地区推广应用的建筑能源供应系统的一种形式。