Self-priming centrifugal pumping set, capacity 20 Cubic Metres per hour at around 2900 RPM, at 20 meter TMH (Total Manometric Head) for 1-m suction head.
Maximum suction lift 5 metres.
Centrifugal pump, diesel driven, with a capacity of 20 m3/hr at 20 m Total Manometric Head.
Maintenance Kit containing Vacuum Pump Hoses and Manometers
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Self-priming centrifugal pumping set, capacity 30 Cubic Metres per hour at around 2900 RPM, at 20 metre TMH (Total Manometric Head) for 1-m suction head.
Maximum suction lift 5 metres.
Centrifugal pump, diesel driven, with a capacity of 30 m3/hr at 20 m Total Manometric Head.
Bench-top unit, with anodized aluminum structure and painted steel panels.
Main metallic elements of stainless steel.
Water condenser, capacity: 1580 W.
High pressure control.
Coolant accumulator.
Diagram in the front panel with similar distribution to the elements in the real unit.
Cooling compressor, computer controlled, power: 1/2 CV.
Air condenser, computer controlled.
Coolant filter to retain particles of condensate.
Expansion valve.
4 Manometers, situated at important points of the unit.
Water evaporator, capacity: 1580 W.
Air evaporator, computer controlled.
Liquid separator to retain liquid particles before going on to the compressor.
Self-priming centrifugal pumping set, capacity 40 Cubic Metres per hour at around 2900 RPM, at 20 metre TMH (Total Manometric Head) for 1-m suction head.
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Bench top unit with anodized aluminum structure and panels of painted steel.
Diagram in the front panel with similar distribution to the elements in the real unit.
Main metallic elements of stainless steel.
Computer controlled cooling compressor:
a. Type: hermetic.
b. Power: 1 CV.
2 water condensers, capacity: 1580 W.
2 computer controlled air condensers.
High pressure switch.
Expansion valve.
Coolant accumulator.
Coolant filter to retain particles of condensate.
2 computer controlled air evaporators.
2 water evaporators, capacity: 1580 W.
4 manometers, situated at important points of the process.
13 type J temperature sensors.
Liquid separator to retain liquid particles before being directed to the compressor.
Self-priming centrifugal pumping set, capacity 50 Cubic Metres per hour at around 2900 RPM, at 20 metre TMH (Total Manometric Head) for 1-m suction head.
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Torque measurement for the dynamometer is by load cell, whilst speed measurement uses a magnetic type pick up. Pump suction and delivery heads are monitored by pressure transducers and the flowrate in the circuit can be accurately determined using the built in flow meter. The testing of such a wide range of pumps on a single test unit is made possible by the provision of quick release hose and drive couplings together with quick release pump fixing clamps, enabling changeover to be made easily and efficiently. All data is logged and displayed on the P.C. that is supplied with the unit. Data can be exported to a spreadsheet for processing.
A positive displacement Gear Pump is supplied as standard with the following pumps available as optional extras:
A positive displacement Vane Pump 40 lpm at 1500 rpm
A rotodynamic Channel Impeller Pump 26 lpm at 3000 rpm
A rotodynamic Centrifugal Pump - duty point of 120 1pm and 0.5 bar at 3000 rpm (max. flow at zero head 140 lpm, max head at zero flow 1.1 bar at 3000 rpm). A rotodynamic Axial Pump - maximum flow 50-60 1pm at 0.2 bar at 10000 rpm. (max head at zero flow 0.5-1 bar with severe cavitation), impeller diameter 38 mm.
A positive displacement Piston Pump - stroke 19.5 mm, bore 20 mm, flow 19 1pm at 1040 rpm, maximum pressure head 67 bar, limited by relief valve to 5 bar
Experimental Capability:
Determination of volumetric and total efficiency
Variation of pump capacity with speed
Head / flow rate plots at various constant speeds
Measurement of brake power input
Cavitation
Specific speed analysis.
The Air Conditioning Heat Pump Learning System uses the principle of vapor compression and offers three different types of expansion methods, enabling students to explore a wide range of thermal application and system designs. The Air Conditioning Heat Pump Learning System is a working system with industrial components that can perform heat pump, air conditioning, and refrigeration systems operation. The Air Conditioning Heat Pump Learning System teaches three types of thermal systems: air conditioning, refrigeration, and heat pumps. These components are mounted on a mobile workstation and supported by instrumentation, microprocessor control, student learning materials for both theory and lab, and teachers guide. Students will learn industry-relevant skills including how to operate, install, analyze, and adjust these systems. Manual valves are provided throughout so students can create faults and change system performance. Extensive instrumentation is included. Components are arranged in a breadboard fashion on the workstation to make it easy for students to follow the system flow and understand its operation.
Features:
Heavy-duty components
Various instruments for monitoring system operation.
The handle has sufficient mechanical strength.
Used for bicycle. The base, the pump tube nozzle, hose, the bottom of each connection part has good sealing performance.
Cavitation can play a major role in the vibration of pumps during operation. The pump and tank are interconnected by hoses. Valves and manometers in the delivery and intake lines allow various operating conditions to be set. The transparent plastic pump housing provides a view into the interior of the pump during operation. With the accessory set, cavitation can be experimentally induced and its influence on the vibration spectrum investigated. The principal elements of the accessory set are a single-stage centrifugal pump and a storage tank. This enables the formation of cavitation bubbles to be observed.
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A front panel with mimic diagram and instrumentation allows to keep the most significant thermodynamic quantities undercontrol, so facilitating the students understanding and the teachers task. The Heat Pump Study Unit Air and Water is an extremely easy-to use and functional unit designed to allow the understanding of the theoreticalprinciples governing the frigorific cycles with heat pump. The unit is supplied with manuals which describe the components, the installation and utilization procedures as well as manyexercises with experimental results. The unit allows the cycle inversion, too.
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The Air Conditioning Heat Pump Troubleshooting Learning System utilizes, the industrys only electronic troubleshooting system, to provide a hands-on experience for identifying faults such as blockages, leakage, and refrigerant overcharging and undercharging. Air Conditioning Heat Pump Troubleshooting Learning System teaches valuable HVAC troubleshooting skills on a hands-on learning system that performs heat pump, air conditioning and refrigeration operation. The Air Conditioning Heat Pump Troubleshooting Learning System consists of a mobile workstation, compressor, pressure control system, refrigeration circuit, instrumentation set, temperature control system, blower control system, and much more! Thermal systems play a key role in industrial, commercial and residential applications to provide heating and cooling of spaces and processes. This system is ideal for training HVAC technicians and installers. Learners will gain this technical knowledge by studying major topic areas like compressors, condensers, metering devices, evaporators, temperature and pressure control devices, and reversing valves. These components will provide hands-on experience for operating, adjusting, and troubleshooting air conditioning / heat pump systems in real-world, on-the-job applications.
Features:
Variable Conditions
Modern Temperature Control
Computer-Based Fault Insertion
Instrumentation Features
Optional Online eBooks.
Vapour Jet Refrigerator And Heat Pump A simple ejector performs the expansion and compression processes involved in the combined cycles. A small electric motor drives the pump of the Rankine cycle. The heat source is electrically heated and produces high pressure vapour to drive the ejector.
A bench top example of a Vapour Jet Refrigerator And Heat Pump that is driven by a heat source. The unit operates on a combined Rankine and vapour compression refrigeration cycle using a low pressure, non-toxic ozone friendly refrigerant.
The Mechanical Heat Pump consists of a hermetic compressor, an insulated coiled concentric tube water cooled condenser, a liquid receiver, a thermostatically controlled expansion valve and air heated evaporator.
Mechanical Heat Pump components are clearly but compactly arranged in a manner similar to that used for many domestic air-water heat pumps and all are visible from the front of the unit.
The components of the heat pump and its instrumentation are mounted on a high quality ABS plastic panel.
Mechanical Heat Pump is given up to the cooling water and the refrigerant condenses to a liquid before passing to the liquid receiver and then the expansion valve. Slightly superheated Refrigerant vapour enters the compressor from the evaporator and its pressure is increased. This brings about a rise in temperature and the hot vapour enters the water cooled condenser.
Portable suction machine for airway aspiration, minor surgery, emergency, patient transfer, suitable for use in hospitals and at home.
The unit provides intermediate and continuous suction. Continuous is limited to 30 minutes after which the unit should be given 30 minutes to cool down.
The flow rate at maximum vacuum is ≥ 33 L/m (2 m³/h).
The unit is provided with a suction tube of at least 1.5 meters.
The suction tube is made of medical grade silicone which is autoclavable at 121°C.
During operating the unit's noise level does not exceed 65.5 dB.
The unit is designed in such a way that it requires little or no oil.
The pump is equipped with a provision preventing fluid flowing to the pump if the collection jar is full (overflow control valve).
The unit is provided with one (1) reusable collection jar.
The unit has maintenance free operating.
A gauge indicating the negative pressure generated by the unit.
A hydrophobic bacterial filter is included in the airline to the pump.
The user adjustable suction ranges between 0 and at least 525 mmHg (70 kPa).
The unit should be provided with a carrying handle and storage provisions for all accessories, allowing to carry the unit with one hand.
The body is to be constructed of stainless steel or material which is non-corrosive or has a corrosion resistant coating.
The unit is equipped with a lead-acid battery.
The battery should be able to power the unit for up to 60 min.
The design of the device should be such that it is easy to clean/disinfect by avoiding difficult-to-reach areas and having smooth surfaces.
The device should have a sturdy, shock resistant casing.
A visual alarm should be incorporated in the unit signalling depletion of the batteries.
The unit should be provided with a battery level indicator and a charging indicator.
The unit should be able to simultaneously operate and charge from 12 Volt as well as the main power grid.
Power requirements: 230 Volts - 50Hz
The weight of the unit does not exceed 5.5 kg.
The components are clearly but compactly arranged in a manner similar to that used for many domestic air-water heat pumps and all are visible from the front of the unit.
The Water Water Heat Pump consists of a hermetic compressor, an efficient plate heat exchanger condenser and evaporator, a liquid receiver, a thermostatically controlled expansion valve.
The operating cycle is as follows:
Slightly superheated Refrigerant vapour enters the compressor from the evaporator and Water Water Heat Pump pressure is increased. Heat is given up to the cooling water and the refrigerant condenses to a liquid before passing to the liquid receiver and then the expansion valve. This brings about a rise in temperature and the hot vapour enters the water cooled plate condenser.
