Adapting the Existing District Heating Systems to Dynamic Operating Conditions

Abstract:

District heating systems operating under dynamic conditions without proper hydronic balancing is one of the causes of discomfort for heating consumers. Moreover, from the point of view of producers, unbalanced heating networks generate low energy efficiency. The study analyzes the operation conditions in three cases, on the same network: the first simulates the operating conditions of the network without balancing, the second when just balancing valves set to corresponding nominal flow rate values are used and the third when balancing valves and differential pressure controllers are used, the so-called total balancing method. Results highlight the importance of the hydraulic balancing under steady state and dynamic operating conditions, as a source to increase the energy efficiency and assure thermal comfort by better distribution of fluid flow rates between consumers.

• Periodical: Applied Mechanics and Materials (Volumes 809-810)
• Pages: 688-693
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.809-810.688
• Online since: November 2015
• Authors: Răzvan Corneliu Lefter*, Daniela Popescu
• Keywords: Balancing Valve, Differential Pressure Controller, District Heating System, Hydronic Balancing

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