design and testing of disc type hybrid turbine pump

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DESIGN AND TESTING OF DISC TYPE HYBRID TURBINE-PUMP Guided by, Er. Jiju John Assistant Professor ME Department Submitted by, Denny John Roll No: 19 S7

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this slide is about integrating a tesla pump with a tesla turbine inorder to increase efficiency.

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Page 1: Design and testing  of disc type hybrid turbine pump

DESIGN AND TESTING OF DISC TYPE HYBRID TURBINE-PUMP

Guided by, Er. Jiju John Assistant Professor ME Department

Submitted by, Denny John Roll No: 19 S7

Page 2: Design and testing  of disc type hybrid turbine pump

CONTENTS

INTRODUCTIONPROBLEM DESCRIPTIONLITERATURE REVIEWWORKING PRINCIPLEDESIGNEXPERIMENTAL TESTING AND RESULTSADVANTAGES AND DISADVANTAGESCONCLUSIONREFERENCE

Page 3: Design and testing  of disc type hybrid turbine pump

INTRODUCTION

• Nikola Tesla invented the bladeless turbine in 1913.• Instead of using fan type blades he used solid disc metal.• Here we uses properties of fluids like viscosity, adhesion, cohesion,

instead of conventional energy transfer mechanisms. • In this presentation, Integration of two types of viscous drag hydraulic

machines- tesla turbine & tesla pump are made.• Fluid transportation and power development is the advantage of these

type of power unit.

Page 4: Design and testing  of disc type hybrid turbine pump

LITERATURE REVIEW

• Nikola tesla invented bladeless turbine in 1909 and patented in1913.• In 1948, tesla turbine pump started its initial production.• In 1993 John pacello & Peter hanas studied the hard to pump

applications of tesla pump.• In 2013, Dr. Amalraju published a research paper regarding hybrid

tesla turbine pump

Page 5: Design and testing  of disc type hybrid turbine pump

PROBLEM DESCRIPTION

• Tesla pumps have a great application in lifting highly viscous fluids.• Ordinary pumps have the following disadvantages

o Difficulty in pumping highly viscous fluids.o Difficulty in pumping highly abrasive slurries with high

amount of solid particles.• Disadvantages of ordinary tesla pump are

oHigh inlet pressure required at inlet.oLow torque.oLow efficiency.

Page 6: Design and testing  of disc type hybrid turbine pump

WORKING PRINCIPLE

• Both turbine and pump operates mainly on the principles of boundary layer effect and viscous drag.• Fluid layer closer to the inner disc surface in the inner disc spacing are

almost stationary from external point of view but they are at highest velocity.• Energy is transferred to adjacent layers.• By viscous drag principle middle layer has maximum velocity.• Operation of turbine depends upon impinging velocity• A portion of the fluid pumped by the pump is bypassed to the turbine inlet

which rotates the turbine and turbine outlet is connected to the pump.

Page 7: Design and testing  of disc type hybrid turbine pump

Fig 1: Fluid path in a Tesla pump

Page 8: Design and testing  of disc type hybrid turbine pump

Fig 2:Fluid path in a Tesla turbine

Page 9: Design and testing  of disc type hybrid turbine pump

DESIGN OF TURBINE PUMP Uses same type of packing(metal, plastics, ceramics) and

sealing(carbon, ceramic, silicon carbide) arrangements as a centrifugal pump.

Disc assembly and pumping mechanisms can be varied by Number of discs. Diameter of disc (8,10,12,14,17,20 inches are

standard). Spacing of the disc (determined by solids to be

passed and nature of fluids). Discs are of smooth or ribbed. Spacers are used in between discs.

Page 10: Design and testing  of disc type hybrid turbine pump

Contd…

Disc are arranged in tandem and are fitted to a circular flange which is coupled with a shaft.

Fig 3: Forms of discs

Page 11: Design and testing  of disc type hybrid turbine pump

TESTING BY SIMULATION Flow simulation by cosmos flow is presented. A prototype is created for this purpose. Pump is simulated for head range of 2 to 10m with 1m

interval. Simulation Configuration-

No of discs: 10. Inlet pressure: Environmental pressure. Outlet pressure: 20000 to 100000 Pa. RPM: 1440

It doesn’t account losses.

Fig 4: Simulation model

Page 12: Design and testing  of disc type hybrid turbine pump

• Head vs Discharge: for each head, discharge is obtained. Results are plotted to know the pump performance.

TABLE: Head Vs Discharge

Page 13: Design and testing  of disc type hybrid turbine pump

•Velocity : Flow produce a vortex in the outlet Pressure produced by boundary layer effect is effectively collected to produce more head. Volute casing is used for this.

• Pressure : centrifugal force by the disc to the fluid pro- duce high pressure inside casing. It is effectively transferred to make a higher head of delivery by pump.

Fig 5: Velocity plot

Fig 6: Pressure plot

Page 14: Design and testing  of disc type hybrid turbine pump

• Turbine output:

TABLE 2: discharge vs RPM

Page 15: Design and testing  of disc type hybrid turbine pump

EXPERIMENTAL TESTING AND RESULTS• Pump testing

Pump is tested to variable head from 1 to 10m. 1m suction lift is used. Discharge head= total head-suction head. Pipe friction losses are 1m/10m for selected pipe system.

Page 16: Design and testing  of disc type hybrid turbine pump

TABLE 3: Experimental(Q Vs H) value

Page 17: Design and testing  of disc type hybrid turbine pump

• Turbine testing: A control valve is used to get the desired flow rates. Theoretically required angular velocity is obtained by

V=ω * RWhere V= velocity in m/s

ω= angular velocity in rad/s R= radius in m

ω= (2ΠN)/60 By controlling mass flow, velocity at outlet is varied and desired

angular velocity is achieved.

Page 18: Design and testing  of disc type hybrid turbine pump

TABLE 4: Q Vs RPM

Page 19: Design and testing  of disc type hybrid turbine pump

RESULTS COMPARISON• Discharge decline is in a linear manner.• Difference in the graphs indicates the losses due to pumping, friction,

sealing.• To collect maximum pressure volute casing is recommended.• To produce best power outputs effective nozzle configurations should

be implemented.

Page 20: Design and testing  of disc type hybrid turbine pump

TABLE 5: Comparison Table

Page 21: Design and testing  of disc type hybrid turbine pump

ADVANTAGES Use of different kind of exotics fluids, with particles, droplets,

multiphase is possible.More stable flow and lower cavitation occurrence.It can turn at much higher speeds with total safety.Tesla disk is the double clockwise and anticlockwise direction of

rotation in a single machine. It can be used for lifting highly viscous fluids , viscosities upto several

10000 cP.Little wear from abrasion during pumping, slurries containing upto

80% solids by volume can be pumped without clogging the system.

Page 22: Design and testing  of disc type hybrid turbine pump

Tesla was able to demonstrate a fuel efficiency of 60% with his bladeless turbine design. Most of engines today do not get above 27 – 28% energy efficiency in their conversion of fuel to work.

Rotor has high efficiency as shown in the figure

Fig 7: Efficiency comparison

Fig 8: Rotor efficiency

Page 23: Design and testing  of disc type hybrid turbine pump

DISADVANTAGESHigh speed but low torque.Experimentally has been found many difficulties to achieve high

efficiencies in nozzles and rotors.Proof of its efficiency compared to conventional turbines is still

questionable and needs more research.

Page 24: Design and testing  of disc type hybrid turbine pump

APPLICATION Geothermal applications Chemical, oil & petrochemical processing. Pulp & paper manufacturing. Waste water treatment &disposal applications. Food & sanitary applications. Mining & environmental cleanup.

Page 25: Design and testing  of disc type hybrid turbine pump

CONCLUSION• Comparative study of experimental and simulation results shows that

disc pump is more suitable for high viscous liquids.• It requires effective nozzle design to produce more efficient output.• This integration of two hydraulic fluids forms a base of new

application and can be considered for further research.

Page 26: Design and testing  of disc type hybrid turbine pump

REFERENCE• “Rebirth of the Tesla Turbine”, Published in “Extra Ordinary

Technology” magazine – July 2003.• Danny Blanchard, Phil Ligrani, Bruce Gale. “Single-disc and double-

disc viscous, Micro pumps”.• Petr Bloudicek, David Palousek. “Design of tesla turbine”.

Konference diplomovych praci 2007• Warren Rice, “Tesla Turbomachinery”, Proc. IV International Nikola

Tesla Symposium (Sep. 23 – 25 1991).• H. S. Couto1, J.B.F. Duarte2 and D. Bastos-Netto, “The Tesla Turbine

Revisited”, 8thAsia-Pacific International Symposium on Combustion and Energy Utilization October 10-12, 2006, Sochi, Russian Federation.

Page 27: Design and testing  of disc type hybrid turbine pump

THANK YOU