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Valve influence on the power requirement of centralized pumps in hydronic heating systems - Theoretical study and evaluation of MathModelica as a hydronic systems simulation tool

Mattias Gruber (Institutionen för energi och miljö, Installationsteknik)
Technical session, HVAC systems; Clima 2010, 10th Rehva world congress, "Sustainable energy use in buildings", Antalya Turkey, 9-12 May 2010 (2010)
[Konferensbidrag, refereegranskat]

This paper describes a method which has been used to evaluate a modeling and simulation software. The method focuses on hydronic system applications and primarily consists of a theoretical study. The study is applied to an assessment of what influence valves have on the power requirement of a centralized pump. In the execution of this study a reference system was simulated in steps using different pump types. The changes in drive power requirement were observed when first balancing and then control valves were introduced to the system. One of the aims of the evaluation method is to determine how well modeled hydronic components corresponded to reality; both regarding dynamic behavior and numerical accuracy. For the conclusion, the evaluation method showed that the software has potential to serve as a hydronic systems simulation software. However, large deviations between simulated and measured data were observed in areas with close to zero flow.

Nyckelord: MathModelica, systems modeling and simulation, hydronic heating systems, balancing, controlling, pumps



Denna post skapades 2010-09-16.
CPL Pubid: 126424

 

Institutioner (Chalmers)

Institutionen för energi och miljö, Installationsteknik (2005-2014)

Ämnesområden

Byggnadsteknik

Chalmers infrastruktur