基于变流量通断时间面积法热计量系统的研究

发布时间：2018-06-15 17:22

本文选题：集中供热 + 水力工况　；参考：《石家庄铁道大学》2014年硕士论文

【摘要】：随着我国建筑节能大力开展，供热体制的不断完善，，对集中供热热计量的方法的研究与探讨也日趋完善。本文以通断时间面积法热计量理论为依托，针对该计量装置对分摊用户热量的合理性、准确性进行了深入的分析和研究，最大限度的满足了用户“等舒适度，等热费”的用热理念。供热系统管网的水力平衡直接决定着通断时间面积法热计量的准确性，本文结合通断式供热系统的特点分析了系统在正常水力工况运行时热用户流量变化对其它用户的影响，并通过LabVIEW仿真计算得出了用户在用户流量改变化其它用户流量的波动情况。用户流量的变化对热用户分摊热量带来一定的影响，目前应用的通断时间计量方法没有考虑用户流量变化对分摊热量的影响，为了研究这种影响情况，分析了以铝制散热器作为散热末端时，流量的增减对散热量影响的大小。通过对散热器的不同供回水温度，不同室温的工况下测试以及散热器散热特性理论推导，提出对现有通断时间面积法热计量分摊方法的修正，从而使基于通断式热计量的热量分摊更精确，热计量收费更公平。
[Abstract]:With the development of building energy conservation and the continuous improvement of heating system, the research and discussion on the method of heat metering for central heating is becoming more and more perfect. In this paper, based on the theory of on-off time area method heat measurement, the rationality and accuracy of the measuring device to distribute the heat to the users are analyzed and studied in depth, which can satisfy the comfort of the users to the maximum extent. The idea of "equal heat cost". The hydraulic balance of the heating system pipe network directly determines the accuracy of the on-off time area method. This paper analyzes the influence of the heat user flow change on the other users when the system is running under the normal hydraulic condition combined with the characteristics of the on-off heating system. Through LabVIEW simulation, the fluctuation of other users' traffic is obtained when the user traffic changes. The change of user flow has a certain impact on the heat allocation of hot users. The current method of on-off time measurement does not take into account the effect of the change of user flow on the heat distribution. In order to study the effect of this kind of influence, The effect of flow rate on heat dissipation is analyzed when aluminum radiator is used as the end of heat dissipation. By testing the radiator at different temperature and at different room temperature, and deducing the radiator heat dissipation characteristic theory, this paper puts forward the modification of the existing method of heat metering and allocation of the on-off time area method. Thus, the heat allocation based on on-off heat metering is more accurate and the charge of heat metering is more fair.
【学位授予单位】：石家庄铁道大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU995

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