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HM 260 Nozzle Performance Study System Show data sheet (pdf file)
Technical Description
The critical pressure ratio and the efficiency of nozzles can be determined using the experimental set-up HM 260. It is possible to insert various nozzles or a baffle plate into the force measurement device. The test chamber is fitted with two air connections. Different forces can be determined using the different inserts and air connections. The distance between nozzle and baffle plate is adjustable. The nozzle air inlet pressure is adjusted using a pressure controller. The back pressure is set with a needle valve at the mass flow meter. The following data are measured: airflow rate of air, air temperature, pressure at inlet and outlet of the nozzle and force.
Learning Objectives / Experiments
· Critical pressure ratio (convergent-divergent pressure ratio)
· Demonstration of choking effect
· Determination of airflow rate
· Nozzle thrust
· Nozzle efficiency
· Determination of flow rate at the narrowest cross-section of a nozzle
Features
Nozzle and baffle plate system with variable distance
Measurement of nozzle thrust or baffle plate force
Relationship of nozzle pressure, back pressure and critical pressure ratio
Demonstration of"choking effect"
Determination of nozzle efficiency
Alternative products
HM 261 -- Nozzle Pressure Distribution
Specification
[1] Benchtop unit to investigate different nozzles
[2] Determination of critical pressure ratio, nozzle thrust, baffle plate force, nozzle efficiency, "choking effect"
[3] Test chamber made of stainless steel, force measurement via bending beam
[4] 5 different nozzles, (4 convergent-divergent, 1 convergent)
[5] Measurement of pressure and temperature at nozzle inlet and outlet
[6] Needle valve for setting the back pressure
[7] Airflow directly indicated on flow meter
[8] lxwxh 800x450x830 35kg
Technical Data
Required air approx. 240l/min,
Compressed air: max. 10bar
Airflow meter made of conical glass,
measuring range: 0.7...8.3g/s
5 nozzles of different length:
diameter of nozzle cross-section: 2mm
- 1 convergent
- 4 convergent-divergent, 3.6…15.8mm long
Test chamber made of stainless steel
Force measurement: measuring the bending of a flexion beam with a distance sensor
Dimensions and Weight
l x w x h : 800 x 450 x 830 x mm
Weight : approx. 35 kg
Connections
100-240V, ~50/60Hz
Compressed air: 240l/min
Scope of Delivery
1 benchtop unit HM 260 including 5 different nozzles
1 instructions manual
Order Details
070.26000 HM 260 Nozzle Performance Study System
© 2005 G.U.N.T. Gerätebau GmbH