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Calculation and analysis of energy storage in heat supply nets of distributed energy

机译：分布能源供热网储能的计算与分析

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摘要

The study of energy storage characteristics of heat-supply net in distributed energy system is essential to develop the control strategy of energy efficient utilization. Studying the energy storage characteristics of the heating network in the distributed energy system is the key to formulating energy-saving utilization control strategies. In this paper, the quantitative calculation model of heat transfer and energy storage (HTES) is established through the research on the energy storage characteristics of heat-supply net in distributed energy system, and the duration of thermal storage energy (TSED) of the energy storage characteristics in heat-supply net is also described. In the HTES model, the influence factor is introduced to make the temperature of the heat transfer section in the initial model more realistic, which also improves the accuracy of the model. Based on the HTES model and experimental data, the lag time of the three heat exchange stations was calculated and compared to verify the correctness of the HTES model. Through the calculation of practical cases, the TSED is obtained and analyzed, and for a best flow rate is found for the working medium. In addition, the quality and quantity regulation of central heating network under the conditions of unit shutdown and time-divided heating is calculated to achieve the purpose of guiding the actual water supply temperature and flow.
机译：分布式能源系统供热网能量储存特性研究对于开发节能利用控制策略至关重要。研究分布式能源系统中加热网络的能量存储特性是配制节能利用控制策略的关键。本文通过分布式能量系统供热网的能量存储特性研究，以及能量的热存储能量（TSED）的持续时间来建立传热和能量存储（HTES）的定量计算模型。还描述了供热网中的存储特性。在HTES模型中，引入了影响因素，以使初始模型中的传热部分的温度更加真实，这也提高了模型的准确性。基于HTES模型和实验数据，计算了三个热交换站的滞后时间，并比较了验证HTES模型的正确性。通过实际情况的计算，获得并分析了TSED，并为工作介质找到了最佳流速。此外，计算中央热网络的质量和数量调节在单位关断和分隔加热的条件下，以达到指导实际供水温度和流量的目的。

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