Week_5_Pump_Construction_and_Pump_Selection.pptx

For Pump Selection

1. FME17 - Fluid Machineries Week 5: Pump Construction and Pump Selection Technological University of the Philippines Engr. Jay Mark P. Delos Reyes 5

2. 05 Week 5 : Pump Construction and Pump Selection   Centrifugal Flow Pump Axial Pump

3. 05 Week 5 : Pump Construction and Pump Selection   Mixed Flow Pump

4. 05 Week 5 : Pump Construction and Pump Selection   Pumps in Powerplant

5. 05 Week 5 : Pump Construction and Pump Selection   Pumps in Powerplant

6. 05 Week 5 : Pump Construction and Pump Selection   The proper application and selection of pumps for installation and operation in a piping system is one of the most crucial choices a power plant system designer must make. As was previously mentioned, choosing a pump can be challenging due to the wide variety of sizes, types, classes, and configurations available. In addition to the enormous number of pumps the designer, the design must also consider the hydraulics system, plant economics, the space and maintenance needs of the plants, structural support, electrical/control requirements, noise, vibration, and, finally, the acquisition and installation of the pumps.

7. 05   In any case, choosing a pump often involves the steps listed below: Prepare a piping system flow schematic . - all liquid flow channels must be determined, and all system components must be placed, before the system can be conceptually configured. This enables the system's designer to comprehend and validate the system's logical operation and calculate the calculations he needs to make to establish the pumps' hydraulic requirements. Determine the need for pumping . - this action is highly fundamental. The pipe system is examined during the design process to ascertain whether a pump or a number of pumps are actually necessary. To transport a liquid from one location to another, lift a liquid to a higher level, pressurize a liquid, or circulate a liquid in a system by reducing system friction losses, one may need to offer a controlled flow. Week 5 : Pump Construction and Pump Selection

8. 05 Determine the physical arrangement of the piping system . - The designer can physically arrange the pump, piping equipment, and piping system instrumentation and control devices within the plant to logically satisfy the needs of the system once he/she has determined the need for pumping and has a clear grasp of how the system must operate. In order to start the full analysis to ascertain the hydraulic requirements of the pump, this stage is essential since it provides the designer with crucial information, such as pipe lengths and static head requirements.   Week 5 : Pump Construction and Pump Selection

9. 05 Calculate the hydraulic requirements of the pumps - The pump flow, head, available NPSH, required suction, and finally the system head curve on which the pump will operate are all determined by the designer. The liquid's composition, specific gravity, temperature, and pH will all be measured and utilized to calculate the pump's hydraulic needs. This information will also be provided to the pump manufacturer so that they can use it to make a pump that satisfies the performance standards established in this stage or to confirm that the designer has chosen the right pump.   Week 5 : Pump Construction and Pump Selection

10. 05 Determine the pump materials of construction - It is advised to consult the pump's manufacturer or other users during this phase. The manufacturer can supply highly important information regarding the construction materials available and suggested for an application using the information determined in the preceding processes. The manufacturer may share recent knowledge of a material choice in related applications. The pump maker can provide information on material costs, material durability, production expertise, and expected service life. To choose the right building materials, designers may also depend on their own experience or the experience of the end user or operator.   Week 5 : Pump Construction and Pump Selection

11. 05 Determine the pump trim/construction requirements - The details of this stage can be found in a variety of manuals that cover the various factors the designer must decide, such as the type of pump, the impeller design, the type of shaft seal, shaft sleeves, bearings, couplings, and other accessories required for a successful pump application. Once more, experience is crucial when choosing these components. It is crucial to consult the pump's maker, consider the designer's background, and consider user and operator preferences.   Week 5 : Pump Construction and Pump Selection

12. 05 Determine the pump driver arrangement. The following significant issues must be carefully studied when choosing a drive for pumping equipment, among other system parameters: the duration of use of the pump/drive; acceptable time frame for reduced or lost pumping capability; the piping system must have variable pumping rates; importance and kind of speed control, automatic starting, or both; availability and dependability of fuels, such as electricity; parameters of the pump, such as its horsepower, torque, and speed under all working situations, as well as the availability of drives; initial expenses, which include construction and other equipment costs; the total cost of consumables each year, which includes fuel, cooling water, cooling air, and for electricity, the sum of energy, demand, and power factor charges; Any additional operating or inspection staff costs; 326 Power Plant Engineering; the price of maintenance components, supplies, and labor; And Reliability and quality of equipment kinds and scope   Week 5 : Pump Construction and Pump Selection

13. 05 Prepare a comprehensive pump performance/selection specification. -a thorough pump performance/ selection specification should contain all the relevant pump design/selection data and be presented to the pump manufacturer for a submitted proposal. The following sections of the specification ought to be present, however they are not required: Code requirements, Description of pump types, Pump arrangement, Pump hydraulic characteristics, Characteristic curves, Pump guarantees, Pump tests (shop and/or field),   Week 5 : Pump Construction and Pump Selection

14. 05 Prepare a comprehensive pump performance/selection specification. - a thorough pump performance/ selection specification should contain all the relevant pump design/selection data and be presented to the pump manufacturer for a submitted proposal. The following sections of the specification ought to be present, however they are not required : Pump construction, Materials of construction, Type of shaft seals, Shaft sleeve construction, Casing and connections, Bearings, Shaft couplings, Miscellaneous trim (recirculation orifices, vibration detector mountings, safety guards, etc.) Pump driver requirements, and Pump hydraulic specification summary sheet/system head curve.   Week 5 : Pump Construction and Pump Selection

15. 05 Select and prequalify pump manufacturers for bidding. - generally, in order to acquire a sufficient number of full and appropriate proposals for examination, the finished specification should be distributed to four to six prequalified pump manufacturers as available for tendering. Depending on the complexity of the pumps or the specified number of pumps, the bidders should be allowed 4 to 6 weeks to develop their proposals.   Week 5 : Pump Construction and Pump Selection

16. 05 Select and prequalify pump manufacturers for bidding. The following things ought to be taken into account while shortlisting potential pump manufacturers: skills in production and experience; Financial stability; number of installations of pumps with similar characteristics and the same pump size (for example, five pumps, each with five years of successful operation); extent of the engineering department required to support the design of pumps, design drawings and documentation, testing facilities; being able to offer installation and startup services; the size of the network of service representatives; ability to promptly deliver replacement parts; Extent of user references and ; Program and practices for QA/QC   Week 5 : Pump Construction and Pump Selection

17. 05 Receive and evaluate pump proposals. - It is important to do a thorough review of the bid after it has been received and accepted. An examination of competing bids for the specified pumps constitutes a bid analysis, and the winning proposal or bidder is typically recommended. The proposal price, payment terms, general conditions (including legal issues), delivery of equipment, escalation, user/operator allowance for funds (cost of money) during equipment installation and plant construction (AFUDC), differential operating costs, and cost of electrical/fuel power losses are all things that need to be taken into account when analyzing bids. The pump proposals' annual running expenses are typically stated as capital equivalent costs. In some circumstances, the specification will include the equivalent capital cost of power or fuel losses that will be considered in the proposal evaluation, for instance, dollars per foot of head of pumping power.   Week 5 : Pump Construction and Pump Selection