智慧建筑能源物联网冷热输送管网优化研究

Optimum Research on Cooling and Heat Transmission and Distribution Pipe Network in Smart Grid

在前期研究工作中,作者提出基于天然气基分布式能源系统智慧建筑能源物联网(NDES-SG)概念以及框架,而本文则重点对NDES-SG中,冷热输送管网能量耗散关键影响因素—保温层优化设计展开研究。本文以冷热物流管网输配为研究对象,研究冷热物流输送管道保温层厚度与输送距离(供冷、热半径)的协同关系,以及选取不同保温材料时,管网经济特性规律。分析结果表明,任意一种保温材料在一定约束条件下,冷热输配管网存在保温厚度与供能半径最优协同关系,即"二者协同最优"拐点值。在NDES-SG中,基于天然气基的分布式产能系统及大中型蓄能系统的位置布点、物联网总能系统效率与输送管网的损失密切相关,因此此研究成果将为智慧建筑能源物联网的冷热电管网输配优化设计以及产能系统和蓄能系统容量的选择和布点的研究提供了理论指导与研究思路。

During the previous research,the concept of NDES-SG has been proposed by the author.And the emphasis of this paper lies in the optimal design of thermal insulation layer,which is an important part of NDES-SG.The constraint condition of maximum cooling loss is selected to study the synergic relation between the insulation layer thickness and distribution distance,and the economic characteristics of transmission and distribution network with different insulation materials.The results show that,there is an optimal synergic relation between insulation layer thickness and transmission distance exists,which means an inflection point can be determined.In NDES-SG,the node locating of multi-energy system's generation plants and storage tanks and the total energy efficiency is affected by the transmission loss to certain degree.Thus,the research offers a reference for the optimal design of transmission and distribution pipe network and the principle of locating generation and storage systems in Smart Grid.