Integration of heat storage system into district heating networks fed by a biomass CHP plant
Integration of heat storage system into district heating networks fed by a biomass CHP plant
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DOI：
10.1016/j.est.2017.12.010
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发表时间：
2018-02
影响因子：
9.4
通讯作者：
Kevin Sartor;Pierre Dewallef
中科院分区：
文献类型：
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作者：
Kevin Sartor;Pierre Dewallef
连接到区域供热网络 (DHN) 的生物质热电联产 (CHP) 工厂被认为是增加可再生能源在能源系统中的份额的绝佳机会。然而，由于热电联产电厂并未针对电力生产进行优化，因此只有在全年有足够的热需求的情况下，其运营才能盈利。另一方面，这些工厂通常用于基线运行，并使用备用锅炉来满足高峰需求。为了扩大热电联产电厂的使用范围并降低成本、传统燃料使用和排放，建议研究使用DHN本身或额外的高温储热作为现有热电联产电厂改造的可行性。这项工作基于一种简单有效的方法，该方法可以准确估计连接到区域供热网络的热电联产电厂的经济、环境和能源性能。考虑到当地政策，重点是将蓄热集成作为现有 DHN 的改造。使用列日大学（比利时）的 DHN 作为应用框架来证明所选方法的有效性。估算潜在的能源、污染物排放节省和由此产生的能源成本，并讨论当前政策的限制。
Biomass Combined Heat and Power (CHP) plants connected to district heating networks (DHN) are recognized as a very good opportunity to increase the share of renewable sources into energy systems. However, as CHP plants are not optimized for electricity production, their operation is profitable only if a sufficient heat demand is available throughout the year. On the other hand, these plants often work for baseline operations and back-up boilers are used to supply the peak demand. To extend the use of the CHP plants and reduce costs, conventional fuel use and emissions, it is proposed to study the feasibility of using the DHN itself or additional high temperature heat storage as retrofit of an existing CHP plant.This work is based on a simple and effective methodology that provides accurate estimations of economic, environmental and energetic performances of CHP plants connected to district heating networks. The focus is performed on the integration of the heat storage as retrofit of existing DHN considering the local policies.The DHN of the University in Liège (Belgium) is used as an application framework to demonstrate the effectiveness of the selected approach. The potential energy, pollutant emissions savings and resulting energy costs are estimated and the current policy limitations will be discussed.