The unit allows the study of this cycle and particularly the influence of the temperature of the body to be cooled. Moreover it is possible to evaluate the cycle performances, hence the heat exchange when the body temperature changes. The Computerized Low Temperature Refrigeration Study Unit is an extremely easy-to use and functional unit able to permit the study of a low temperature refrigerating cycle through a simple compression refrigerating cycle. Moreover, the transducers and the dedicated software allows the data acquisition of the main thermodynamic quantities and to obtain or as a table or as a graph, the acquired values and the thermodynamic calculated quantities. A front panel with mimic diagram and instrumentation allows to keep the most significant thermodynamic quantities under control, so facilitating the students understanding and the teachers task. The unit is supplied with a manual which describes the components, the installation and utilization procedures as well as many exercises with experimental results.
....
Medical gas flow meter (Thorpe tube design) to regulate and measure theflow rate of medical gas supplied to a patient, maximum flow rate 8 LPM,for medical oxygen.
Graduation shall have over 270 degrees of visibility.
Needle valve and body constructed of brass or aluminium.
Calibrated at 50-55 psi / 345-380 kPa / 3.4-3.8 bar inlet gauge pressure.
Inlet pressure (nominal) > 50 psi (345 kPa / 3.45 bar), peak inlet pressure at least 100 psi (690 kPa / 6.89 bar).
Pressure compensated design to give specified accuracy for whole range of input pressures
Built-in inlet filter.
Thorpe tube design flow meter using DISS input connector for panel /regulator mounting.
Can be cleaned with damp cloth and a disinfection solution.
Transparent, graduated (metric system) column, shatter resistant polymer certified for medical use.
Maximum flow rate when fully opened: 50 L/min.
Inlet and outlet connectors DISS style, other types of connectors available upon request
Adjustment knobs to have rough surface to prevent slipping.
Transparent, graduated (metric system) column, shatter resistant polymer certified for medical use.
Graduation shall have over 270 degrees of visibility.
Thorpe tube design flow meter using DISS input connector for panel /regulator mounting.
Pressure compensated design to give specified accuracy for whole range of input pressures
Built-in inlet filter (depending on supplied model).
Inlet and outlet connectors DISS style, other types of connectors available upon request
Can be cleaned with damp cloth and a disinfection solution.
Needle valve and body constructed of brass or aluminium.
Calibrated at 50-55 psi / 345-380 kPa / 3.4-3.8 bar inlet gauge pressure.
Inlet pressure (nominal) > 50 psi (345 kPa / 3.45 bar), peak inlet pressure at least 100 psi (690 kPa / 6.89 bar).
Maximum flow rate when fully opened: 50 L/min (depending on supplied model).
This experimental and demonstration apparatus consists of an open channel of rectangular cross section supported at each end by frames, one of which is adjustable so that the slope of the channel may be varied. This Flow Channel provides a low cost experiment with accuracy comparable with larger scale channel investigations. The channel walls are made from clear acrylic plastic so that full visibility of the flow characteristics can be achieved. A number of test models are provided along with inclinometer and surface profile measuring instrument.
Experimental Capability:
Hydraulic jump - determination of energy head and power loss at the jump section by means of specific energy considerations.
Study of long base weir and calibration of broad crested weir.
Study of Venturi Flume, observation of flow through a throated Flume, calibration of the Flume when used as a flow measuring instrument.
Study of uniform flow in inclined channel, verification of Chazy equation and determination of Chazy Coefficient and Mannings Friction Factor.
Calibration of sharp crested, thin plate overshot weirs. Friction factor and roughened channel bed studies.
Determination of Hydraulic Mean Depth for the flow channel.
Study of flow over triangular hump section, plotting of Specific energy - Depth relationships, comparison of theoretical and experimental values of critical height.
Study of flow under a sluice gate (undershot weir) with application of Specific Energy and Momentum Functions.
Medical gas flow meter (Thorpe tube design) to regulate and measure the flow rate of medical gas supplied to a patient, maximum flow rate 15 LPM, for medical oxygen.
Graduation shall have over 270 degrees of visibility.
Needle valve and body constructed of brass or aluminium.
Calibrated at 50-55 psi / 345-380 kPa / 3.4-3.8 bar inlet gauge pressure.
Inlet pressure (nominal) > 50 psi (345 kPa / 3.45 bar), peak inlet pressure at least 100 psi (690 kPa / 6.89 bar).
Pressure compensated design to give specified accuracy for whole range of input pressures
Thorpe tube design flow meter using DISS input connector for panel /regulator mounting.
Can be cleaned with damp cloth and a disinfection solution.
Transparent, graduated (metric system) column, shatter resistant polymer certified for medical use.
Built-in inlet filter (depending on supplied model).
Maximum flow rate when fully opened: 50 L/min (depending on supplied model).
Adjustment knobs to have rough surface to prevent slipping.
Inlet and outlet connectors DISS style, other types of connectors available upon request.
Hydraulics Bench Chronometer Digital Flow Meter
....
The Low Temperature Refrigeration Study Unit is an extremely easy-to use and functional unit able to permit the study of a low temperature refrigerating cycle through a simple compression refrigerating cycle. A front panel with mimic diagram and instrumentation allows to keep the most significant thermodynamic quantities under control, so facilitating the students understanding and the teachers task. The unit allows the study of this cycle and particularly the influence of the temperature of the body to be cooled. Moreover it is possible to evaluate the cycle performances, hence the heat exchange when the body temperature changes. The main characteristic of the Low Temperature Refrigeration Study Unit is that to enable the student to study the low temperature refrigerating cycles, hence the properties of the low temperature heat exchanges, particularly the non-stationary low temperature heat exchange, as a function of the temperature of the body to be cooled. The unit is supplied with a manual which describes the components, the installation and utilization procedures as well as many exercises with experimental results.
....
The set of white acrylic models with black background comprise a cylinder, aerofoil, smooth contraction - enlargement, sudden contraction - enlargement, cross flow heat exchanger tube bank, and a bend and elbow model. Models are clearly illuminated when positioned in turn in the flow channel. The self-contained, bench mounting unit consists of a highwalled flow channel incorporating a detachable glass front panel, light source, inlet tank with removable flow straightener, level control sluice gate, outlet tank, electrically driven circulating pump, interconnecting pipework, flow control and drain valves, and is complete with a set of models, polystyrene beads and accessories. The aerofoil model allows the angle of incidence to be set as required and other models of the clients own supply can be easily fitted. Some models may be used to simulate either closed conduit or open channel flow by varying the quantity of water in the unit.
Features:
Flow pattern clearly visible
Self-contained system
Simple to operate
Wide range of models
Dye-free system
Illuminated system
Additional models easily made.
Medical gas flow meter (Thorpe tube design) to regulate and measure the flow rate of medical gas supplied to a patient, maximum flow rate 5 LPM, for medical medical air.
Graduation shall have over 270 degrees of visibility.
Needle valve and body constructed of brass or aluminium.
Pressure compensated design to give specified accuracy for whole range of input pressures.
Thorpe tube design flow meter using DISS input connector for panel /regulator mounting.
Can be cleaned with damp cloth and a disinfection solution.
Transparent, graduated (metric system) column, shatter resistant polymer certified for medical use.
Calibrated at 50-55 psi / 345-380 kPa / 3.4-3.8 bar inlet gauge pressure.
Inlet pressure (nominal) > 50 psi (345 kPa / 3.45 bar), peak inlet pressure at least 100 psi (690 kPa / 6.89 bar).
Structural Specifications:
Diagram in the front panel with similar distribution to the elements in the real unit.
Screws, nuts, plates and all the metallic elements in stainless steel.
Quick connections for adaptation to feed hydraulics source.
Stainless structure.
Flow straighteners and guide vanes are used. A choice of between one and three flow pumps can be ordered to provide maximum flow rates between 0.3 and 0.8m/s at maximum operating depths. Higher flow rates can be achieved with a smaller depth of water. 300 x 450 mm flow channel (Advanced flow channels) is designed in a modular way to allow different configurations to be purchased against the current and future needs of the user. The inlet chamber has been designed from experience with cavitation tunnels to provide a relatively stable flow. The basic channel is manufactured in 5m sections such that a length of up to 20m can be purchased. The walls of the channel are made from plexiglass (with toughened glass options), the base of the channel is formed from aluminium (with a stainless steel option), and the frame from a coated mild steel fabrication.
Experimental Capability:
Depending on the options purchased, experiments include:
Use and performance of weirs, dams and other hydro structures
Sedimentation transport and settlement
Hull resistance tests and performance
Tidal turbine power measurement
Flow related experiments in open channels
Wind and wave effects on structures.
Medical gas flow meter (Thorpe tube design) to regulate and measure theflow rate of medical gas supplied to a patient, maximum flow rate 5 LPM,for medical oxygen.
Transparent, graduated (metric system) column, shatter resistant polymer certified for medical use.
Graduation shall have over 270 degrees of visibility.
Needle valve and body constructed of brass or aluminium.
Thorpe tube design flow meter using DISS input connector for panel /regulator mounting.
Can be cleaned with damp cloth and a disinfection solution.
Inlet and outlet connectors DISS style, other types of connectors available upon request
Adjustment knobs to have rough surface to prevent slipping.
Calibrated at 50-55 psi / 345-380 kPa / 3.4-3.8 bar inlet gauge pressure.
Inlet pressure (nominal) > 50 psi (345 kPa / 3.45 bar), peak inlet pressure at least 100 psi (690 kPa / 6.89 bar).
Pressure compensated design to give specified accuracy for whole range of input pressures.
Structural Specifications:
Diagram in the front panel with similar distribution to the elements in the real unit.
Quick connections for adaptation to feed hydraulics source.
Stainless structure.
Screws, nuts, plates and all the metallic elements in stainless steel.
Oxygen concentrators are not suitable to be used as an oxygen source to other medical equipment providing respiratory support, such as ventilators, CPAP devices, High Flow Nasal Oxygen, etc.
Provides a continuous, variable flow of concentrated oxygen 93% (±3%) derived from room air, to a maximum rate 8 L/min.
Equipped with a single oxygen outlet provided with controllable flowmeter.
Audible and/or visual alarms for low oxygen concentration (<82%) and power supply failure.
Contains oxygen monitor to verify concentration.
Flowmeter minimum flow rate of 2 L/min. Lower flow rates may be achieved by a combination of the concentrator and a separately supplied flow splitter (details under RELATED PRODUCTS).
Audible and visual alarms for high temperature and pressure failure.
Power efficiency ≤ 70 W/LPM.
Digital meter that displays cumulative hours of device operation.
Oxygen outlet(s) with 6 mm (¼-inch) barbed fitting.
Flowmeter continuously adjustable, with markings of at most 0.5 LPM intervals.
Noise level <60 dB(A).
CASING AND ENVIRONMENT
Oxygen outlet to be securely mounted and sheltered.
The unit includes internally and externally mounted filters for cleaning the air intake.
All user-removable filters are cleanable. Cleaning instructions for filters are included in the instructions for use.
Case to be hard, to be cleanable with standard hospital cleaning materials.
Whole unit to be movable with four wheels.
ELECTRICAL CHARACTERISTICS
Electrical power requirements to be locally compatible.
Capacity for safe operation from at least ± 10% of rated voltage.
Electrical protection by resettable circuit breakers or replaceable fuses.
230 Volt, 50 Hz, 2.1 amps (110 Volt units available upon request)
Mains power cable to have length ≥ 2.5 m.
The unit is assembled in an anodized aluminum profile structure, with painted steel panel.
....
The apparatus consists of an open channel of rectangular cross section supported at its inlet end by a reservoir tank, and at the outlet end by a frame. A number of test models are provided along with an ink injector to allow streamlines to be observed. This Flow Channel provides a low cost experiment with an easy to set up and use operation. The nominal dimensions of the channel are 20 mm x 150 mm x 650 mm long. The channel walls are made from clear acrylic plastic so that full visibility of the flow characteristics can be achieved.
Experimental Capability:
Study of flow over triangular hump section, demonstration of approximate Specific energy - Depthâ„¢ relationships, comparison of theoretical and experimental values of critical height
Study of flow with variable head inlet and variable head outlet using the adjustable outlet orifice
Visualisation of flow around objects through the injection of ink into the flow
Study of flow under a sluice gate (undershot weir).
Demonstration of arching, mass flow and funnel flow with different bulk solids
Investigation of the outflow of bulk solids from silos with wedge-shaped discharge hoppers
Angle of the hopper wall adjustable while retaining
Constant outlet cross-section
Practical review of the design results
Two silos with different hopper wall materials
Silos can be removed for cleaning
Tamper for compacting the bulk solids
Front walls of the silo made of transparent material
Stopwatch for determining outflow times.
Moisture-absorbent gloves are constructed of 40-denier nylon tricot fabric and can be worn alone, or used as a glove liner.
Easy size identification by color-coded hem on rolled cuff
Can be worn alone or used as a liner
40-denier tricot fabric in a two-piece construction
Moisture absorbent.
K-type thermocouples measure the inlet and outlet water and air temperatures, as well as permitting the connection of the air velocity sensor.
The air mass flow rate is derived using an air velocity sensor.
Some parts in the heat exchanger such as probes and axial fan can be easily removed for cleaning.
Enables variation of the parameters involved in the cross flow exchange process and therefore a complete analysis of the phenomena.
A comprehensive instruction manual is included.
Mounted on a PVC base plate which is designed to be installed on the plinth of the Heat Exchanger Unit without the need for tools.
Separation of solid compound into coarse and fine material with air flow in 20-stage zigzag duct
Air flow generation by fan; adjustment by valve
Zigzag sifter to separate solid compounds
Dosage of feed material by way of distance of hopper outlet from vibrating trough and frequency of vibrating trough
Recording of volumetric air flow rate and differential pressure through sifter and cyclone
Feed hopper with vibrating trough for feed of solid compound into sifter
Separation of fine material from air flow by gas cyclone with tangential inlet.
3 tanks for feed material and coarse and fine materials.
