What is a stratified chilled water storage tank?
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It is a component in a chilled water system utilizing the water’s natural tendency to stratify.
The lower temperature water will settle at the low part of the tank while the warmer water will be at top.
But to have this type of reaction, the tank must have a height to diameter ratio of 0.25 to 0.5.
Increasing the height to diameter ration of a cylindrical tank reduces the proportion of the tank volume occupied by the thermocline.
Best way to have a proper stratification is by designing a chilled water diffuser which will force the water in and out of the tank.
The fluid velocity in the diffuser must be around 1ft/s.
Check out some design guide in ASHRAE.
The lower temperature water will settle at the low part of the tank while the warmer water will be at top.
But to have this type of reaction, the tank must have a height to diameter ratio of 0.25 to 0.5.
Increasing the height to diameter ration of a cylindrical tank reduces the proportion of the tank volume occupied by the thermocline.
Best way to have a proper stratification is by designing a chilled water diffuser which will force the water in and out of the tank.
The fluid velocity in the diffuser must be around 1ft/s.
Check out some design guide in ASHRAE.