北方地区农村清洁取暖技术适用性评价以北京为例

Applicability evaluation of clean heating technologies in rural areas in northern China: a case study in Beijing

  • 摘要: 为了切实改善区域大气环境质量,中国在北方地区大规模开展以煤改电、煤改气为主的农村清洁取暖改造工程,如何选择技术可行、经济上可接受的清洁取暖技术路径是清洁取暖改造可持续的关键问题。基于北京农村地区实地调研数据,从经济性和舒适性2个维度对4种农村清洁取暖技术进行适用性评价,总结出各种技术的适用条件,提出农村清洁取暖技术路径选择建议。结果表明:空气源热泵运行费用较低,舒适性较好,适合冬季温度不低于−20 ℃的各类区域;燃气壁挂炉运行费用略高于空气源热泵,舒适性较好,适合距离燃气管线或燃气站较近的平原、半山区地区,不同气候温度范围均适用;蓄能式电暖器运行费用较高,舒适性较差,适合冬季温度接近于城区的农村或城乡接合部、农宅面积较小的区域;地源热泵取暖最好结合政府资金支持项目实施,运行费用较低,舒适性较好,适合地质结构适宜建井,有足够空间进行地埋管的区域。建议农村清洁取暖工作立足长远,因地制宜地选择清洁取暖技术,着力降低农户清洁取暖运行成本,同时提高农村清洁取暖电力和天然气供应的可靠性。

     

    Abstract: In order to effectively improve the regional atmospheric environmental quality, China has launched large-scale rural clean heating renovation projects in the northern region, mainly from coal to electricity and coal to gas. How to choose a technically feasible and economically acceptable clean heating technology path is a key issue for the sustainability of clean heating renovation. Based on field survey data in rural areas of Beijing, the applicability of four rural clean heating technologies was evaluated from two dimensions of economy and comfort, the applicable conditions of various technologies were summarized and the suggestions on the choice of rural clean heating technologies were proposed. The results showed that: The air source heat pump had low operating cost and good comfort, which was suitable for various areas where the temperature was not lower than −20 ℃ in winter. The gas wall-hung boiler operation cost was slightly higher than the air source heat pump and had good comfort, which was suitable for plain and semi-mountainous areas close to gas pipelines or gas stations, and it was applicable to various climate and temperature ranges. Energy storage heater had high operating costs and poor comfort, which was suitable for rural areas where the winter temperature was close to urban areas, or areas of urban-rural junctions and small farm houses. The ground-source heat pump was best implemented in conjunction with government-funded projects, with lower operating costs, better comfort, and was suitable for areas where the geological structure was suitable for well construction and there was enough space for underground pipes. It was suggested that the rural clean heating work should be based on the long-term perspective, select clean heating technologies according to local conditions, and strive to reduce the operation cost of clean heating for farmers, while improving the reliability of rural clean heating power and natural gas supply.

     

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