北京地区办公建筑供暖系统的数值模拟  

Numerical Simulation of the Heating System for the Office Building in Beijing Area

作　　者：冯涛 李迅 丁德平 

机构地区：[1]北京市气象服务中心,北京100089

出　　处：《土木建筑与环境工程》2013年第S1期181-185,共5页Journal of Civil,Architectural & Environment Engineering

基　　金：北京市科技计划课题资助项目(Z111100074211010)

摘　　要：应用能量平衡原理,建立建筑物热损失方程和供热量方程,从而推导出室外温度和室内温度、供水、回水温度的数值模型,建立了北京地区某办公建筑供暖系统数学模型。利用自动气象观测站获得的24h逐时的室外温度实况数据,对2012年2月1日至29日期间的供、回水温度进行数值模拟,并与该办公大厦实况值进行对比分析。检验结果表明,供、回水温度模拟值随着室外温度的变化而发生明显的变化,并且与室外温度呈反比例关系,相关系数为-0.95,室内温度模拟值始终维持在设计温度附近上下波动。此外,供热量的模拟值与实况值具有较一致的变化趋势,随着室外气温的升高,模拟的供热量能够随着下降,供热量的模拟值要比实况值低,能够节约近8%的供热量。上述情况表明该供暖系统数学模型的模拟效果较好。The principle of the energy equilibrium is applied to establish the relationship between heat loss and supply,indoor and outdoor temperature,supply and return water temperature of heating system for a building.A numerical simulation model of supply-return water temperature is deduced.The heating system mathmatical model for the office building in Beijing area is developed Based on the hourly air temperatures at the automatic weather observation station and observed indoor temperature from the office building in February 2010 in Beijing area,a simulation experiment of hourly prediction for next 24-hours is executed.The test results show that the simulated and observed supply and return water temperature changed significantly when the outdoor air temperature changes,it is inversely proportional relationship between them,the correlation coefficient is-0.95,the simulated indoor temperature has remained near the designed temperature.There is a consistent trend between simulated and observed heating,as outdoor air temperatures rise,the simulated heating declined,it can save nearly 8 % for heating.This means the simulated model of supply-return water temperature has a good quality.

关 键 词：能量平衡原理 数值模拟 供暖系统 供水温度 回水温度 

分 类 号：TU832[建筑科学—供热、供燃气、通风及空调工程]