Science – Future of Lithuania / Mokslas – Lietuvos Ateitis, Vol 2, No 5 (2010)

The Analysis of Balancing Water Cooling Systems and Making Management Decisions Regarding Office Buildings

Andrius Timofejevas
Kęstutis Čiuprinskas

Abstract


The paper analyses a cooling system installed using 268 fan coils and having an area of 7900 m2 in a public building situated in Vilnius city. A comparison between a constant flow system having three way valves, a variable flow system having manually balanced valves and a variable flow system having automatically balanced control valves is made. The analysis has been performed to find out initial investments, installation costs and operating costs during 10 year period. Calculation has showed advantages of the variable flow. The overall cost of the system having manually balanced and two way control valves is 20% lower than that of the constant flow system. The overall cost of the system having automatically balanced control valves is 37% lower than that of the constant flow system. The marked differences may increase in case of growth in electricity price.

Article in Lithuanian


Article in: Lithuanian

Article published:

Keyword(s): cooling; hydraulic balancing; efficiency; energy saving; tie up schemes; flow

DOI: 10.3846/mla.2010.101

Full Text: PDF pdf

Science – Future of Lithuania / Mokslas – Lietuvos Ateitis ISSN 2029-2341, eISSN 2029-2252
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