The potential of utilizing temperature-variable district heating systems in rural areas was investigated. A local district heating system in Germany and the related project NATAR are briefly described; measurement data is evaluated. Operational experiences with a seasonal temperature reduction and consequent advantages for different heat generation systems and heat storages are discussed. The analysis of measurement data reveals a high optimization potential for solar thermal systems in case of an integration both into a low- and a high-temperature storage. Furthermore, a combined heat-and-power plant in combination with a CO₂ heat pump promises sector-coupling potential and high electricity self-consumption.

中文翻译：

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农村社区变温区域供热管网运行经验

调查了在农村地区使用变温区域供暖系统的潜力。简要介绍了德国当地的一个区域供热系统和相关项目NATAR；评估测量数据。讨论了季节性降温的运行经验以及不同供热系统和蓄热器的优势。对测量数据的分析揭示了在集成到低温和高温存储中的情况下，太阳能热系统具有很高的优化潜力。_{此外，与 CO 2}热泵相结合的热电联产厂有望实现行业耦合潜力和高电力自耗。