Dredging in California This great state of California was founded as a result of the discovery of gold at Sutter’s Mill in January 1848. The modern day prospector is under attack by various environmentalist groups that have declared war on suction dredges. A suction dredge is a mechanical underwater vacuum cleaner that sucks up gravel‚ sand from the bottom of river ways‚ and passes these items through a sluice box that uses specially designed riffles to create low pressure zones that trap heavy minerals
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head Hst = the vertical distance between the water surface level of the suction and discharge tanks. •Static discharge head Hsd = the vertical distance from the pump centerline up to The water surface level in the discharge tank. •Static suction head Hss (+ve) Applies when the supply tank is above the pump. It isThe vertical distance from the pump centerline up to the water surface level in the suction tank.. •Static suction lift Hss (-ve) Applies when the supply tank is below the pump. It is the
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CENTRIFUGAL PUMP DEMONSTRATION UNIT (CH3132 - Energy Efficiency and Conservation) INSTRUCTED BY : Mr. M.A. THARANGA NAME INDEX NO GROUP DATE OF PER DATE OF SUB : T.R.MUHANDIRAMGE : 090334 H :E : 2012-03-30 : 2012-04-24 RESULTS AND DISCUSSION Exercise 1 :-Understanding the basic characteristic curves of a centrifugal pump. 1. Total head against the flow rate At 70% At 50% 2. Mechanical power changes with the flow rate At 70% At 50% 3. Pump efficiency against the flow rate
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Diaphragm o Rotary Single rotor Vane Piston Flexible member Screw Peristaltic Multiple rotor Gear Lobe Circumferential piston Screw Dynamic o Centrifugal Axial flow Single stage Multi stage Mixed Flow Single suction Double suction Radial flowl Single stage Multi stage o Special Effect Jet Gas lift Hydraulic ram Electromagnetic This document only addresses centrifugal pumps‚ with a focus on single-stage radial-flow slurry pumps. Centrifugal pumps are capable
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Pump Selection and Sizing ( ENGINEERING DESIGN GUIDELINE) Rev: 03 Feb 2007 D) Total Head E) Net Positive Suction Head – NPSH F) Pump Power and Efficiency I) Power II) Hydraulic Power III) Brake Power IV) Pump Efficiency G) Pump Sizing- Step by Step Calculation 25 26 28 28 29 29 30 31 TROUBLESHOOTING OF THE PUMP PROBLEMS I) Seal Leakage II) Loss of flow III) Loss of Suction IV) Low Discharge Pressure V) Excessive Noise and Vibration VI) Excessive Power Consumption VII) Rapid Pump Wear
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1 (9) with the main switch on the switchbox (11); pump 2 must remain off! 3. Set the desired volumetric flow rate Q with the drain cock (8); ensure continuous water inflow into the reservoir. 4. Record measured values‚ (Refer Table 1): P Suction - on the intake side of the pump (13) P Delivery - on the delivery side of the pump (14) Q - Volumetric flow rate Note: To determine volumetric flow rate close the outlet valve. Use stopwatch to establish time required for raising the level
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K. Segrest Evaluation English 1111 Mrs. Cornelli 12 February 2013 The Dyson DC25 Ball Vacuum Cleaner The Dyson DC25 Ball vacuum cleaner‚ overall‚ has the most powerful suction as well as maneuverability. I have used this cleaner for a few years now in my home cleaning business and when compared to the more traditional vacuum‚ I think it is well worth every penny spent on it. Although it does cost hundreds of dollars more than others that can be purchased‚ I think it has been more carefully
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to boil. It was then removed from heat and 2 grams of Na2CO3 was added and dissolved. Finally the loose tea was added to the water and allowed to steep for 5 minutes. After 5 minutes the mixture was put through a suction filtration. A suction funnel was secured on top of the suction flask with the vacuum tubing. No filter paper was used because the tealeaves were very course. Then 400mg of NaCl was added and dissolved. The solution was then cooled in an ice bath. The solution was then transferred
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CENTRIFUGAL PUMP A centrifugal pump converts the input power to kinetic energy in the liquid by accelerating the liquid by a revolving device - an impeller. The most common type is the volute pump. Fluid enters the pump through the eye of the impeller which rotates at high speed. The fluid is accelerated radially outward from the pump chasing. A vacuum is created at the impellers eye that continuously draws more fluid into the pump. The energy created by the pump is kinetic energy according the
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Refrigeration Cycles Prof. U.S.P. Shet ‚ Prof. T. Sundararajan and Prof. J.M . Mallikarjuna 6.5 Simple Vapor Compression Refrigeration System: A simple vapor compression refrigeration system consists of the following equipments: i) Compressor ii) Condenser iii) Expansion valve iv) Evaporator. B COMPRESOR C ∆Q1 200C FLUID TO BE COOLED EVAPORATOR (-300C) w CONDENSER (350C) COOLING WATER 00C ∆Q2 A EXPANSION VALVE D Fig.6.5. Simple vapour compression system
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