Department of aerogas dynamics and technical systems dynamics
Head of Department – Corresponding Member of the National Academy of Sciences of Ukraine, D.Sc., Professor V. I. Tymoshenko
Description
The pneumatic transport bench is an assemblage of circulation units, solid phase (bulk material) loading, unloading, and reloading units, and a compressed gas source, which are functionally integrated by pipelines, instruments, and control means; the bench serves to reproduce a gas or two-phase mixture flow whose parameters correspond to those of the pneumatic transport system under development.
2,3 – Du30 and Du50 measuring sections;
4 – gas supply unit;
5 – pressure regulator;
6 – flow switch;
7 – transparent inserts;
8 – video camera;
p, T, Δp – pressure, temperature, and differential pressure pickups;
I – gas flow;
II – two-phase flow
Key specifications
| Working pressure | 0.1 to 3.3 MPa |
| Power consumption | 30 kW |
| Total length of the linear portion | up to 70 m |
| Measuring pipeline diameters | 30 and 50 mm |
| Flow speed | up to 45 m/s |
| Solid particle size | up to 10 mm |
| Solid phase volume concentration | up to 15% |
| Charging material volume | up to 30 liters |
| Cooling | water |
| Instrumentation | Venturi tube, measuring orifice plate, Sapfir 22DD differential pressure pickups, TSM 0879 temperature transducers, DDI-20 pressure transducer |
Capabilities
The pneumatic transport bench is fitted with equipment, control means, and instruments that make possible the following types of operation:
- solid phase and carrier gas closed-circuit operation;
- gas closed-circuit and solid phase open-circuit operation;
- solid phase closed-circuit and gas open-circuit operation;
- solid phase and gas closed-circuit two-loop operation;
- solid phase and gas closed-circuit single-loop operation.
Advantages
In the level of working pressure, the bench has no parallel both in Ukraine and abroad.
Use
In the design of increased-haul pneumatic transport systems for the determination of the hydraulic characteristics of gas – solid particles two-phase flows in an uninvestigated carrier gas pressure range: hydraulic resistance, critical speed and dancing speed, specific power consumption, and allowable particle size.
| OFFICE ADDRESS: | Institute of Technical Mechanics , 15 Leshko-Popelya St., Dnipro 49005, Ukraine |
| PHONE NUMBER: | +38-056-372-06-41 |
| E-MAIL: | vitymoshenko@nas.gov.ua |
