摘要
目的建立太阳能-天然气冷热电三联供高效能源耦合系统,并且求出在实际工况下的太阳能天然气最优耦合比例。方法应用DeST软件对典型办公楼建筑进行动态负荷计算,根据计算所得负荷选择合适机组,并在Trnsys中建立冬季与夏季的机组仿真模型。在保证机组实际运行工况条件下,以制冷机组效率为目标函数,根据非线性规划和遗传算法,求得最优耦合比例。结果求解得到当太阳能所占份额为0.25时,机组能源利用效率达到最大值0.696。当太阳能与天然气的耦合比例为1∶3时,机组能源效率达到最大。结论在太阳能-天然气冷热电三联供系统中太阳能所占比例会影响到机组的能源利用效率。
In order to establish a high-efficiency energy coupling system of solar-natural gas cold,heat and power,dynamic load of a typical office building is calculated to find the optimal coupling ratio between solar and natural gas under actual operating conditions by DeST software.A appropriate unit is selected based on the calculated load,and a simulation model of winter and summer unit is established in Trnsys.Under ensuring the actual operating conditions of the unit,the cooling unit efficiency is taken as the objective function to find the optimal coupling ratio based on nonlinear programming and genetic algorithms.When the solar energy share is 0.25,the unit’s energy utilization efficiency reaches a maximum of 0.696.When the coupling ratio of solar energy and natural gas is 1∶3,the energy efficiency of the unit reaches the maximum.So in a solar-natural gas combined heat and power system The proportion of solar energy will affect the energy efficiency of the unit.
作者
于水
常忠浩
杨江辉
YU Shui;CHANG Zhonghao;YANG Jianghui(School of Municipal and Environmental Engineering,Shenyang Jianzhu University,Shenyang,China,110168)
出处
《沈阳建筑大学学报（自然科学版）》
CAS
CSCD
北大核心
2021年第2期324-329,共6页
Journal of Shenyang Jianzhu University：Natural Science
基金
国家重点研发计划项目(2017YFB0604000)。
作者简介
于水(1983-),女,教授,博士,主要从建筑节能方面研究。
