Comparison Of Pumps
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Product Description
COMPARISON OF PUMPS
The experiments familiarise students with various pump types, such as centrifugal and positivedisplacement pumps.
The trainer includes two centrifugal pumps, one piston pump as a positive-displacement pump and a self-priming side-channel pump. The sidechannel pump works primarily as a centrifugal pump and, depending on liquid level, can also act as a positive-displacement pump. This means, as a special feature, the side-channel pump also permits gases to be pumped.
The pump being investigated pumps water in a closed circuit. In the process, the performance data of the pump and pressure losses in the pipeline are recorded. The centrifugal pumps can also be operated in parallel or in series configuration. Each pump is driven by a separate threephase AC motor. The speed of the motors for the centrifugal pumps is variably adjustable by a frequency converter. All motors are mounted on swivel bearings, so the torque can be measured by way of a force sensor, enabling the mechanical drive power output to be determined.
One free position is likewise equipped with a reversible three-phase AC motor with variable speed. This position can be used for mounting of any pump.
Experiments demonstrate the basic operating behaviour of various pump types.
Relevant measured values can be read on digital displays. At the same time, the measured values can also be transmitted directly to a PC via USB. The data acquisition software is included. The performance data of the pump and losses in the pipeline are calculated by the software and represented by characteristic curves. The operating point of the pump can be determined from these characteristics.
The well-structured instructional material sets out the fundamentals and provides a step-bystep guide through the experiments.
- The unit perform the following experiments and investigations:
- Learning Objectives I Experiments
- Investigation and comparison of the operating behaviour of various pump types:
- Centrifugal pumps
- Piston pump (positive-displacernentpurnp)
- Side-channel pump
- Recording a pump characteristic curve
- Recording a system characteristic curve
- Determining efficiency
- Investigation and comparison of parallel and series configuration of centrifugal pump
- Comparison of pump types
Specification:
- Experiments relating to key issues in pump engineering
- Comparison of various pump types: centrifugal pump piston pump, side channel pump
- Operation of centrifugal pumps in parallel or series configuration
- Free position for additional pump
- Three-phase AC motors for centrifugal pumps and additional motor with variable speed by frequency converter
- Software for data acquisition via USB under Windows Vista or Windows 7
Technical Data:
- Centrifugal pump 2x
- Max. flow rate (Q): 300L/min
- Max. head (H): 16,9m
- Nominal speed: 2900min-1
Three-phase AC motor 2x, for centrifugal pump:
- Power output: 1,1kW
Side-channel pump, self-priming, one-stage:
- Q: 83,3L/min, H: 50m
- Nominal speed: 1450min-1
Three-phase AC motor for side-channel pump:
- Power output: 0,55kW
Piston pump:
- Q 17L/min, H: 60m
- Nominal speed: 405min-1
- Three-phase AC motor for piston pump
- Power output: 0,75kW
- Speed range: 750...3000 min-1
- Measuring ranges
- flow rate: 0...500L/min
- pressure (inlet): -1..1,5bar
- pressure (outlet): 0 ..10bar
- torque: 0....15Nm
- speed: 0...3000min-1
- pump electrical power consumption: 0...2kW
- Dimensions and Weight
- LxWxH: 3150 x 1250 .x 2100mm
- Weight: approx. 550kg
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