Abstract
At present times, in the context of rising fuel and energy prices the energy saving is very actual phenomenon. A better building insulation and the replacement of large transparent constructions will significantly reduce heat loss of the building. The hydraulic adjustment of heating systems is also a essential requirement for optimum operation of buildings. The peak load of the heating system occurs only a few days a year, mostly the transitional period dominates. Correct settings of control valves and pumps can achieve significant savings from the energy requirement of the building. This study is focused on the hydraulic analysis of rising pipes in reference high-rise building in Bratislava. The main aim of this study was to determine hydraulic behavior of two reference risers and to analyze wall roughness of the old seamless steel pipes and buoyancy effect on hydraulic conditions.
Highlights
In large energy systems, for example in high-rise buildings is necessary to use balancing elements on problematic places
Regular checking and cleaning is highly recommended in old energy systems to eliminate higher corrosion rate
In the high-rise buildings is worth considering the buoyancy, which can confuse the hydraulic stability of energy system
Summary
For example in high-rise buildings is necessary to use balancing elements on problematic places. These are mainly the heels of rising pipes and places before each floor circuits. In static hydraulic systems with constant mass flow is recommended to use static balancing elements. In variable hydraulic systems with dynamic flow is recommended to use beyond static elements dynamic balancing elements, such as pressure differential controller [1]. With these components, a constant pressure difference is maintained in balanced modules. The main aim of this study was to determine hydraulic behavior of two reference risers in high-rise reference building in Bratislava and to analyze wall roughness and buoyancy effect based on experimental measurements and numerical modelling
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