Design and Operation of a Differential Surge Tank

by Paul Otter, CH2M Hill, Boise, ID, USA,



Document Type: Proceeding Paper

Part of: Water Power '87

Abstract: The differential type of surge tank is more effective in operation than the simple type because it reacts more quickly to load changes of all sizes. The differential tank is also usually smaller and less costly than a simple tank. However, since the tank combines several hydraulic actions, its operation is difficult to predict. Predicting the tank's operation can only be accomplished by detailed operation study. Several operation studies may be required to optimize the operation and tank dimensions during different startup and load rejection sequences. A computer program was developed to simulate operation of this type of tank on small computers. Using this program, the tank size and operation were optimized. After the project was constructed, actual operation of the tank was compared with predicted operation and found to agree closely.

Subject Headings: Water storage | Water tanks | Load factors | Computer software | Hydraulics | Computer models

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