Archives des Fluids dynamics - Pignat.com

Fan

PIGNAT — Thu, 25 Apr 2019 07:43:56 +0000

Study air velocity pressure drops

Study of the pressure drops

GENERAL SPECIFICATIONS

Centrifugal fan.
Pitot tube with display speed and flow.
Diaphragm with differential pressure transmitter.
Pressure drop measurement on line.
PVC butterfly valves .
Damping-grid at the outlet of the two PVC pipe-lines with port-hole and light for anemometer position setting

Instrumentation

Column liquid manometer.
2 differential pressures transmitter.
Transmitter speed/flow.
Anemometer of helices.
2 electronic thermometers.

Dim : 435 x 100 x 190 cm - 200 kg

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L’article Fan est apparu en premier sur Pignat.com.

Open channel flow monitoring

PIGNAT — Tue, 23 Apr 2019 11:44:19 +0000

This unit implements the methods of open channel flow monitoring by pneumatic orifice and spillways

GENERAL SPECIFICATIONS

450L polyethylene Tank, removable lid.
SS feeding centrifugal pump.
Selection of the measurement network, by venturi or by weir.
Weir channel measurement , PVC, zone of stilling with baffles, flows into measuring channel and flows into the feeding tank.
Venturi channel measurement, PVC, zone of stilling with baffles, flows into measuring channel and flows into the feeding tank.
Weir.
Level measures : by level Ultrasonic.
Three weirs interchangeable :
- Triangular 20 °.
- Triangular 30 °.
- Square.

Instrumentation

Flowmeter.
Ultrasonic level transmitter with electronic display.

Dim : 320 x 125 x 190 cm - 400 kg
SS tubular framework 40 x 40mm

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L’article Open channel flow monitoring est apparu en premier sur Pignat.com.

Solid-liquid fluidisation

PIGNAT — Tue, 16 Apr 2019 11:47:53 +0000

Study the fluidisation with water of a bed of glass beads

GENERAL SPECIFICATIONS

Polyethylene tank with removable lid and draining valve.
Stainless steel centrifugal pump.
PVC column, length 1 m, packed with glass beads, SS support grid, quick dismantling, two pressure sets.
Bed support by SS grid.
Weir enabling water flowing outlet towards the tank 1, retention grid.
Piezometric tube with stainless steel 1 m graduated ruler, a hand pump for the pressure setting, draining valve and quick fitting connections.
PVC column, length 1 m, packed with glass beads, SS support grid, quick dismantling, two pressure sets.

Instruments

Flowmeters

Dim : 110 x 80 x 180 cm - 150 kg

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L’article Solid-liquid fluidisation est apparu en premier sur Pignat.com.

Hydrodinamic column

PIGNAT — Thu, 07 Mar 2019 16:04:23 +0000

Hydrodynamic study of the three columns

GENERAL SPECIFICATIONS

Polyethylene tank with removable lid and draining valve.
Submerged pump, low level detector, isolating valve.
Bubble tray column, isolating valve.
Glass column, packing with glass Raschig rings, isolating valve.
Glass column packing with Multiknit, isolating valve.
Fan, by-pass valve. Pressure measurements.

Instrumentation

Air float rotameter.
Water float rotameter.
U piping.

Dim : 200 x 75 x 240 cm - 235 kg
SS tubular framework 40 x 40mm

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L’article Hydrodinamic column est apparu en premier sur Pignat.com.

Gas solid fluidization

PIGNAT — Thu, 07 Mar 2019 15:50:32 +0000

Study air fluidization of solid particles

Implement pneumatic transport of solids

GENERAL SPECIFICATIONS

Air feeding circuitry with filter, pressure reducing valve.
Air flow rate measurement with float rotameter.
Fluidization chamber in glass, with bronze retention grid and solid particles bed.
Glass cyclone.
Filter to collect light particles (filtering capacity : 50μm). Solid particles delivered with the unit : recrystallized alumina.

Instrumentation

1 float rotameter.
Differential manometer with graduation.

Dim : 90 x 40 x 155 cm - 60 kg
Aluminum profile frame

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L’article Gas solid fluidization est apparu en premier sur Pignat.com.

Gas solid fluidization drying

PIGNAT — Thu, 07 Mar 2019 14:17:18 +0000

The fluidization process

The study of heat transfer in a fluidized bed is an additional part of the Gas Solid Fluidization unit.

This additional equipment allows the characterization of heat exchanges.

We can measure the value of heat-transfer coefficient for different configurations of the bed of particles: fixed bed, fluidized bed and only air.

From a network of curves, we will plot the evolution of heat-transfer coefficient as a function of the air flow rate for a constant temperature of the filament.

This equipment can also define the criteria for fluidizing the alumina powder by monitoring the air flow and the pressure drop of the bed.

Study of the air fluidization of solid particles

Characterize the solid to be fluidized

Determine the minimum fluidization speed

Study of the drying of solid particles in a hot air stream

Apply the wet air graph

Determine the kinetic graphs for linear phase and diffusion phase drying

Study of the thermal convection coefficient (option)

Compare the thermal convection coefficient for various medium configurations: in air, in a bed

of fixed particles and in a bed of fluidized particles.

L’article Gas solid fluidization drying est apparu en premier sur Pignat.com.

Combined fluidization

PIGNAT — Thu, 07 Mar 2019 14:05:17 +0000

Liquid-Solid and Gas-Solid fluidization study

GENERAL SPECIFICATIONS

Compressed air feeding circuit: general isolating valve, pressure reducing valve isolating valve.
Gas-solid fluidization: glass column, evacuation jar, glass fritted support, two pressure ports, quick-closing clamp.
Differential manometer of liquid column, filling valve, draining valve and scale.
Water feeding circuit: general isolating valve, float flowmeter with setting valve.
Solid-liquid fluidization: glass column, evacuation jar, support: glass perforated plate, two pressure ports, quick-closing clamp, recovery filter at the outlet.

Instrumentation

Air flowmeter.
Water flowmeter.

Dim : 105 x 55 x 175 cm - 60 kg
SS tubular framework 40 x 40mm

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L’article Combined fluidization est apparu en premier sur Pignat.com.

Solid liquid fluidization

PIGNAT — Thu, 07 Mar 2019 13:55:37 +0000

Study the fluidization with water of a bed of glass beads

GENERAL SPECIFICATIONS

100 L tank with removable lid.
SS centrifugal pump.
Glass column, packed.
ND 60 glass column, packed.

Glass column.
Set of valves: column selection and draining.

Instrumentation

2 flowmeters.
Piezometric tube, a hand pump for the
pressure setting, draining valve.

Dim : 160 x 90 x 190 cm - 150 kg
SS tubular framework 40 x 40mm

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L’article Solid liquid fluidization est apparu en premier sur Pignat.com.

Fluids dynamics

PIGNAT — Thu, 07 Mar 2019 13:41:04 +0000

Horizontal bench, piezometric tubes measurments

Experimental approach to fluid dynamics

GENERAL SPECIFICATIONS

100 L polyethylene storage tank with removable lid and isolating valve.
SS centrifugal pump.
Circuit 1, smooth piping, 1m, ND 20, Two 90° bends, two 45° bends, tracer injection device.
Circuit 2, Sudden narrowing from ND 25 to ND 10. Sudden enlargement from ND 10 to ND25.
Circuit 3 Smooth piping, ND 10, 1 m long. Rough piping, ND 20, 1 m long. Diaphragm, ND 10. Venturi, ND10.

Instrumentation

Float flowmeter.
Nineteen piezometric tubes.

Dim : 190 x 70 x 210 cm - 175 kg
SS tubular framework 40 x 40mm

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L’article Fluids dynamics est apparu en premier sur Pignat.com.

Fluids dynamics

PIGNAT — Thu, 07 Mar 2019 13:27:36 +0000

Introduction to fluid dynamics on a compact bench

GENERAL SPECIFICATIONS

PE storage tank, centrifugal pump.

PVC mono circuit Ø: 32 mm and Ø16 mm

90° bend.

Brutal narrowing, brutal widening.
Ring-follower valve and inclined seat valve.
180° bend, different radius.
Dye tracer injection with isolating valve.
Smooth PVC piping, 2 Ø different, L=1m.
Striped PVC piping, length 1m with a PVC elbow radius 50 mm.
Plexiglas diaphragm.
Plexiglas Venturi.
Three way valve.

Instrumentation

Flowmeter.
Differential electronic transmitter.

Dim : 190 x 75 x 180 cm - 175 kg
SS tubular framework 40 x 40mm

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L’article Fluids dynamics est apparu en premier sur Pignat.com.