2 edition of Optimum control of pump operations. found in the catalog.
Optimum control of pump operations.
D. W. Reed
|Contributions||Institute of Hydrology.|
|The Physical Object|
|Number of Pages||34|
Figure 1 – Illustrations of pump flow control methods. A – throttling, B – bypassing, C – on-off control and D – VSD control. The relative power consumption of the different control methods can be estimated from the area between the x and y-axes and the operating point. AGEC Lectures in Dynamic Optimization Optimal Control and Numerical Dynamic Programming Richard T. Woodward, Department of Agricultural Economics, Texas A&M University.. The following lecture notes are made available for students in AGEC and other interested readers.
Pumps Operation, Maintenance and Monitoring Basics Daniel Kernan Manager Monitoring and Control Group, ITT Executive Summary Pumps are at the heart of most industrial processes, and the second most common machine in the Size: KB. Most existing systems requiring flow control make use of bypass lines, throttling valves, or pump speed adjustments. The most efficient of these is pump speed con-File Size: 1MB.
Figure Schematic of pump two-stage compensator control. Pressure compensation and load sensing are terms often used to describe pump features that improve the efficiency of pump operation. Sometimes these terms are used interchangeably, a misconception that is cleared up once you understand the differences in how the two enhancements operate. The control panel manufacturing capabilities extend from small simplex pump controllers to multi-unit walk in main instrument and control consoles. Optimum Controls Corporation provides OEM panels for pump system manufactures, industrial skid fabricators, process equipment manufacturers and specialized equipment manufacturers.
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The optimal policy should result in the lowest total operating cost for a given set of boundary conditions and system constraints. An optimal control system for a water-supply pumping system will contain three major components: a hydraulic network model, a demand forecast model, and an optimal control model.
optimal control formulation (duration of pump operations). The system constraints can be represented explicitly by the use of a simplified inductive model of the water distribution system  or a deductive model .
The exact form of the objective function and the associated decisions variables depend upon the nature of the problem Size: KB. The requirements and basic components of a typical optimal control environment for water‐supply pumping systems are presented and discussed.
Examined model components include hydraulic network models, demand forecast models, and optimal control models. Material is an up-to-date treatment of optimal control problems which have thus far been difficult to solve; Applications selected have major current interest: routing in communications networks, freeway traffic control, water resources management, etc Authors with backgrounds in automatic control, systems theory and operations research lend the book a breadth of approach which makes Optimum control of pump operations.
book. CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): The water utility industry has started investigating the integration of on-line telemetry and optimal computer control systems in an effort to reduce operating costs and provide more reliable operations. Energy costs constitute the largest expenditure for nearly all water utilities worldwide and can consume up to Nakahori I., Sakaguchi I., Ozawa J.
() An optimum operation of pump and reservoir in water supply system. In: Stoer J. (eds) Optimization Techniques Part 1. Lecture Notes in Control and Information Sciences, vol by: 3. Statement of design problems using the optimum control theory has stricter and more precise solutions.
These approaches are reflected in papers [8, 9], etc. We will provide the basic formulations for optimum control problems and establish their connections with optimum design problems of hydraulic machines. The drive and control system is designed to interface the gear pump operation with the extruder screw speed to provide constant pressure and output from the die.
Pump drives use either a DC or AC motor. This method of control helps to reduce pump operating costs. Its start-up and checking are smooth, which eliminates water hammers. Pump operation according to the diagram shown in Figure 2 allows for ‘sleeping’, ensures uniform pump operation, eliminates the less-than-optimum cascading operation system and current overload during pump by: Flow control by speed regulation of pumps, is one of today’s best methods of varying the output on both Rotodynamic and Positive Displacement pumps and this guide describes its many advantages and potential system Size: KB.
Centrifugal pumps are the most common type of pumps found in DOE facilities. Centrifugal pumps enjoy widespread application partly due to their ability to operate over a wide range of flow rates and pump heads. EO STATE the purposes of the following centrifugal pump File Size: KB. What we now need is a new pump which will operate with its best efficiency point at C.
But there are other simpler options rather than replacing the pump. The speed of the pump can be reduced or the existing impeller can be trimmed (or new lower size impeller). The blue pump curve represents either of these options. Pumps and Pumping SystemFile Size: 1MB.
The pumps are mechanical structures indispensable in numerous socio-economic areas like: villages water supply, irrigations, oil industry, sewage movement, chemical movement, flood control and for the production of various goods. Pumps must supply the energy necessary to lift liquids from a lower elevation to a greater one.
Pumps operation and maintenance generates significant : Simona Adina Miron, Aurora Alexandrescu, Mihail Luca. Engages pump. Properly deploys wheel chocks. Opens tank to pump/tank suction.
Identifies and opens correct discharge valve. Builds correct pressure for discharge line. Correctly sets pressure control device. Assembles hose lines, valves, and appliances as necessary. Transitions to pressurized water source in a File Size: KB. Damage on Pumps and Systems.
The Handbook for the Operation of Centrifugal Pumps offers a combination of the theoretical basics and practical experience for the operation of circulation pumps in the engineering industry.
Centrifugal pumps and systems are extremely vulnerable to damage from a variety of causes, but the resulting breakdown can be prevented by ensuring that these pumps and Format: Paperback. The operation of pumps imposes significant costs on a water distribution system for energy supply and pumps maintenance.
To derive an optimum pumps scheduling program, this study presents a multiobjective optimization problem with the objective functions of 1- energy cost and 2- the number of pump switches. The optimization of both objective functions together leads to a Cited by: c. Ensure all drains and valves on the intake side of the pump are closed d.
Use the front or opposite side intake if possible (front intake piping reduces capacity) 4. Ensure you have a means for water circulation 5.
Place pump in gear in accordance with transmission instructions: 6. Primer Operation a. Set throttle to to rpm's Size: KB. Figure Performance Curves for a 4x Pump Used for Water Service 39 Figure Multiple Pump Operation 44 Figure Multiple-Speed Pump Performance Curves 45 Figure Typical Tank Level Control 48 Figure Effect of Impeller Trimming on Pump Performance 49 Figure Effects of Reducing Speed on a Pump’s Operating Characteristics Total plant power is almost linear with load because, under optimal control, it is dominated by compressor power--even at the lightest of partial cooling loads.
Delta-T. Chilled water temperature delta-T is relatively constant under optimal control of fan, pump and compressor.
There is only a 17% reduction from design delta-T at the 50% part-loadFile Size: KB. Traditional pump scheduling models neglect the operation reliability which directly relates with the unscheduled maintenance cost and the wear cost during the operation.
Just for this, based on the assumption that the vibration directly relates with the operation reliability and the degree of wear, it could express the operation reliability as the normalization of the vibration by: 2.
Students will also learn how to operate fire pumps by gaining an understanding of water supply, nozzles and flow rates, optimal positioning, and more.
To help increase students retention of the material presented in the text, the following features are included in each chapter: NFPA Standards and Objectives Each chapter identifies the /5(16).annual spending on pump maintenance and operations is approximately 50% greater than that of any other rotating machine, according to a recent study by the FiveTwelve Group.
Companies that operate large numbers of pumps usually recognize the high energy costs as well as the impact pumps have on reliability and process control.
However, too manyFile Size: KB.5 Pump Type Select pump that has highest efficiency based on desired flow rate 6 Optimum Size of Components Select optimal size of pump, motor, seal section and check the limitations if any 7 Electric Cable Select correct type and size of cable based on well 8 Accessory and Optional Equipment.