太阳能谷电蓄能供热系统在北京地区的应用
Application of solar energy-valley electric energy storage heating systems in Beijing
摘要：
为合理利用低谷电能，研发了一套太阳能谷电蓄能供热系统，并以北京市某工程项目为例，分析了该系统的运行状况及其效益。结果表明：采用相变蓄能材料的太阳能集热器较好地解决了太阳能利用的间断性问题；晴天时太阳能保证率基本维持在20%左右，环境温度相对天气条件对太阳能保证率的影响小；采用太阳能谷电蓄能供热系统比燃煤锅炉系统减少运行费用52.4%，年均可节省203.94 t标准煤；系统谷电使用率为97.4%，起到了削峰填谷的作用。
Abstract：
In order to make reasonable use of low-valley electric energy, develops a set of solar energy-valley electric energy storage heating system. Taking a project in Beijing as an example, analyses the operation status and benefits of the system. The results show that solar collectors using phase-change energy storage materials can better solve the intermittent problem of solar energy utilization. The solar energy guarantee rate is basically maintained at about 20% in sunny days, and the environmental temperature has little effect on the solar energy guarantee rate relative to weather conditions. The use of solar energy-valley electric energy storage heating system reduces operating costs by 52.4% compared with coal-fired boiler systems, and can save 203.94 tons of standard coal annually. The utilization rate of valley electric in the system is 97.4%, which has the effect of peak shaving and valley filling.
Keywords:solar energy, heat collector, phase change energy storage, valley electricity, peak shaving and valley filling, heating, energy conservation