Understanding Water storage temperature stratification
Thermal stratification in water storage tanks refers to the natural formation of distinct temperature layers within the tank, where warmer water tends to reside above cooler water.
Thermal stratification in water storage tanks refers to the natural formation of distinct temperature layers within the tank, where warmer water tends to reside above cooler water.
Stratification in an HWS tank increases energy efficiency as the water reaches a higher temperature value at a shorter time (Njoku et al., 2014). Thermal stratification is a buoyancy driven phenomenon in which the fluid separates into layers of different temperatures with height.
We numerically analyzed the heat storage processes in hot water tanks with three water distribution configurations: star, antenna, and octagonal. Temperature stratification was evaluated based on thermocline thickness and storage efficiency.
The temperature contour lines are obtained for nine different cases to show the effect of aspect ratio and flow rate on the tank stratification.
Thermal stratification: the water tank should be able to sustain hot and cold water separately without any physical barrier, in other words, continuous or stepped temperature distribution of water should be practiced.
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About Water storage temperature stratification video introduction
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