Development And Evaluation Of A Simplified Modeling Approach For Hydraulic Systems

Authors

Yuebin Yu, Carnegie Mellon UniversityFollow
Vivian Loftness, Carnegie Mellon UniversityFollow
Daihong Yu, University of Nebraska - LincolnFollow
Yan Lu, Corporate Research of Siemens CorporationFollow
Volker Hartkopf, Carnegie Mellon UniversityFollow

Document Type

Article

Date of this Version

2012

Citation

International High Performance Buildings Conference. Paper 87.

Comments

International High Performance Buildings Conference at Purdue, July 16-19, 2012

Abstract

This paper presents how a hydraulic system can be properly modeled for hydraulic balancing, knowledge of flow distribution, coupled simulation, and evaluation of control, etc. It focuses on water-based heating and cooling systems, which generally have high energy efficiency in design but could perform poorly in reality due to the undersensing condition and strong thermal-hydraulic coupling. The study introduces the motivation, presents the simplified modeling methodology, and illustrates the model and simulating structure. A preliminary evaluation of the method is conducted with two simple simulations. The proposed “node-branch-state” modeling approach could be easily modified, expanded and integrated into a detailed thermal model. The paper concludes with some discussions on future work.