暖通空调>期刊目次>2021年>第1期

复杂水系统分析引擎CAENAE-W:原理、开发及验证

Complex water system analysis engine CAENAE-W: Principle, development and verification

王海 李铮伟
同济大学

摘要:

介绍了复杂水系统分析引擎(CAENAE-W)的基本原理、使用界面及验证结果。CAENAE-W基于面向对象法,对管网中的元件(管段、制冷机、水泵等)以面向对象的方式建立模型,将所有组成流体网络的元件定义为某类特定对象,根据初始化的边界条件和流体的流动状态,通过适当的摩擦系数计算公式校核各管段摩擦系数,对水力计算进行反复迭代,直至满足设定的精度要求。基于这一原理,开发了基于浏览器-服务器架构(B-S架构)的计算软件,并基于某实际系统与动态仿真软件Dymola进行了对比,结果表明,两者的计算结果偏差在1%以内,说明CAENAE-W具有较高的准确性和工程应用潜力。

关键词:空调系统,水力分析,水力模型,面向对象,管道数值模拟

Abstract:

Presents the basic principle, user interface, and verification results of the complex water system analysis engine (CAENAE-W). Based on the object-oriented method, CAENAE-W establishes object-oriented models for all components in a water system, including pipes, chillers and pumps, and defines all the components as a certain type of specific object. According to the initial boundary conditions and the fluid flow state, CAENAE-W calibrates the friction coefficient of all pipes through the appropriate friction coefficient calculation formula, and iterates the hydraulic calculation until the required solution accuracy is achieved. To validate its accuracy, develops a calculation software based on the B-S architecture, and compares the CAENAE-W with the dynamic simulation software Dymola based on a specific case. The results show that the calculation error is less than 1%, indicating the high accuracy and engineering application potential of the CAENAE-W.

Keywords:air conditioning system, hydraulic analysis, hydraulic model, object-oriented, pipeline numerical simulation

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