摘要：The paper presents the analysis of thermal processes occurring
in thermal energy storage tanks used for heating hot water systems.
Three- dimensional Computational Fluid Dynamics (CFD) methods were
used. The standard buffer charging stage was modelled for three tank inlets’
diameters DN20, DN40 and DN80. With a constant charging water flow and
temperature the port diameter affects inlet velocity, heat storage dynamics,
thermal stratification and thermocline thickness in storage tank. The smallest
diameter causes unfavourable thermal mixing of accumulated water, and the
largest diameter supports thermal stratification.
其他摘要：The paper presents the analysis of thermal processes occurring in thermal energy storage tanks used for heating hot water systems. Three-dimensional Computational Fluid Dynamics (CFD) methods were used. The standard buffer charging stage was modelled for three tank inlets’ diameters DN20, DN40 and DN80. With a constant charging water flow and temperature the port diameter affects inlet velocity, heat storage dynamics, thermal stratification and thermocline thickness in storage tank. The smallest diameter causes unfavourable thermal mixing of accumulated water, and the largest diameter supports thermal stratification
