HSI training system refrigeration and air conditioning technology, base unit Teaching Equipment Heat Transfer Lab Equipment
SR-915 HSI training system refrigeration and air conditioning technology, base unit Teaching Equipment Heat Transfer Lab Equipment for college, vocational training center, university.
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SR-915 HSI training system refrigeration and air conditioning technology, base unit Teaching Equipment Heat Transfer Lab Equipment
1.Description
The base unit SR 915 is, dependent on the objective of the experiment, extended into complete refrigeration circuit with one of the models available as accessories (SR 915 .01 refrigerator, SR 915 .02 refrigeration system with refrigeration and freezing stage, simple air conditioning system, SR 915 .07 air conditioning).
The main components of SR 915 are compressor, condenser and receiver plus electrical and communications systems. The models are plugged onto the base unit and connected hydraulically with refrigerant hoses and electrically with cables. Self-sealing couplings reduce the refrigerant loss to a minimum. All components are arranged well visible to allow their operation to be monitored.
The modern and powerful software is an integral part of the training system in the form of hardware/software integration (HSI). It enables the comfortable execution and analysis of the experiments. The experimental unit is connected to the PC via a USB interface.
The software consists of a software for system operation and for data acquisition and an educational software. With explanatory texts and illustrations the educational software significantly aids the understanding of the theoretical principles. Each model has its own software matching the learning objectives. With the aid of an authoring system, the teacher can create further exercises.
Temperatures and pressures in the system are recorded by sensors and displayed dynamically in the software for system operation and data acquisition. The refrigerant mass flow rate is calculated in the software from the recorded measured values. The effect of parameter changes can be tracked in log p-h and h-x diagrams. The system is also operated via the software.
2.Technical details
Specification
basic experiments on the operation of refrigeration and air conditioning systems by combining the base unit and models
training system with HSI technology
condensing unit consisting of compressor, condenser and receiver
connection between condensing unit and model via refrigerant hoses
model attached securely on SR 915 with fasteners
manometer for refrigerant with temperature scale
Technical data
Compressor
refrigeration capacity: 463W at 7,2/54,4°C
power consumption: 288W at 7,2/54,4°C
Receiver: 0,7L
Refrigerant
R513A
GWP: 631
filling volume: 700g
CO2-equivalent: 0,4t
Measuring ranges
temperature: 1x -50…50°C, 3x 0…100°C
pressure:
1x intake side: -1…9bar
2x delivery side: -1…15bar
flow rate: 0…19kg/h (refrigerant)
230V, 50Hz, 1 phase
230V, 60Hz, 1 phase
120V, 60Hz, 1 phase
UL/CSA optional
Required for operation
PC with Windows
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Specification
[1] examination and comparison of various heat exchanger types
[2] five different types of heat exchangers included in the scope of delivery
[3] finned heat exchanger with fan
[4] operating mode (parallel flow or counter flow) selectable via valves
[5] flow rates adjustable via valves
[6] electromagnetic flow meter
[7] digital displays for temperature, pressure differences and flow rate
[8] hot & cold water benches available for
independent operation
[9] water/steam heat exchanger unit and electrical steam
Generator available for further experiments
[10] software for data acquisition via USB under Windows Vista or
Windows 7
Technical Data
Plate heat exchanger, 10 plates
– heat transfer surface area: approx. 0,26m²
– capacity: 15kW
Tubular heat exchanger
– heat transfer surface area: 0,1m²
– heat transfer surface area (coil): 0,17m²
Shell and tube heat exchanger
– capacity: 13kW
Finned cross-flow heat exchanger
– heat transfer surface area: approx. 2,8m²
– max. flow rate fan: 780m³/h
– max. pressure difference fan: 430Pa
Jacketed vessel with stirrer
– heat transfer surface area (vessel): 0,16m²
– heat transfer surface area (coil): 0,17m²
Measuring ranges
– differential pressure air: 0…10mbar
– differential pressure water: 0…1000mbar
– flow rate: 0…3m³/h
– temperature: 0…100°C
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Learning Objectives / Experiments
– pressure curve in a closed pipe system with circulation pump
– influence of pipe diameter, flow velocity, change in
cross-section and pipe fittings on the pressure losses
– determination of pump characteristics, system characteristics and the operating point
Specification
[1] investigation of the pressure losses at contractions, pipe angles, pipe bends, valves and fittings and pipe elements of different diameter
[2] pipe elements are commercially standard components in heating and sanitary engineering
[3] clear panel mounted on a sturdy, movable frame
[4] closed water circuit with pump and tank
[5] integrated bleed valve on manometer and in the pipe section
[6] flow measurement using rotameter
[7] measurement of the pressure distribution at
13 pressure measuring points, display with 13 tube manometers
Technical Data
Pump – 3 stages – max. flow rate: 4,5m³/h – max. head: 6m
Tank: approx. 5L
Measuring range – flow rate: 100…1000L/h – pressure: 1600mmWC
Dimensions and Weight LxWxH: 1900x700x2020mm Weight: approx. 140kg
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Learning Objectives / Experiments
– thermal expansion of different materials such as PVC, PE, copper and steel
– determination of thermal expansion coefficients and the expansion force
– measurement of pipe elongation
– effect of varying pipe diameter
– expansion compensator
Specification
[1] investigating the thermal expansion of different pipe sections
[2] pipe sections can be selected by ball valves
[3] water connections made using quick-release couplings
[4] operation with hot and cold water supplies
[5] adjustment of the water temperature using mixing battery with thermocouple
[6] temperature measurement using battery-operated digital thermometer
[7] force measuring device to determine the expansion force
Technical Data
Pipe section length: 1000mm
Nominal diameters- PVC, PE, Cu: – Cu: – Steel: 1/2″
Mixing battery connection: 1/2″
Force measuring device
– spring rate per spring: 78N/mm
– total spring rate c: 156N/mm
Measuring range
– temperature: -50…90°C
Dimensions and Weight
LxWxH: 1650x700x1850mm
Weight: approx. 100kg
Required for Operation
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I.Production profile
The key feature of plate heat exchangers is their compact design, in which optimum use is made of all of the material for heat transfer. The pressed in profile on the plates creates narrow flow channels, in which significant turbulence occurs. The turbulent flow allows effective heat transfer even with low flow rates and also has a self-cleaning effect. Plate heat exchangers are used in the food industry, offshore technology, refrigeration and domestic engineering.
II.Equipment feature
The SR1158E Plate Heat Exchanger is part of a series of units enabling experiments to be performed on different heat exchanger types. The experimental unit is ideally suited for investigating the functioning and behaviour of a plate heat exchanger in operation.
The plate heat exchanger is made up of profiled plates with water flowing through the spaces between them. The plates are soldered in such a way that two separate flow channels are formed. These are one “cold” and one “hot” flow channel, in an alternating arrangement. Part of the thermal energy of the hot water is transferred to the cold water. Valves on the supply unit are used to adjust the flow rates of hot and cold water. The supply hose can be reconnected using quick-release couplings, allowing the flow direction to be reversed. This allows parallel flow or counter flow operationspecification
[1] plate heat exchanger for connection
[2] hot and cold water supply
[3] parallel flow and counterflow operation possible
[4] six soldered plates
[5] recording of temperature
Technical Data
6 plates, stainless steel
Heat transfer area: 480cm²
Dimensions and Weight
LxWxH: 400x230x85mm
Weight: approx. 3kg
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1 Product Overview
1.1 Profile
This product is an extensible educational experiment equipment for students to observe the heating, cooling and air movement of the device during operation. Students can observe the mixing of air and conduct tests to monitor temperature and air pressure. Grasp its control principle and control method, cultivate students’ corresponding knowledge and skills, suitable for higher vocational schools, engineering university, secondary vocational school and technical school related professional teaching and skills training evaluation.
1.2 Feature
(1) The training platform adopts an aluminum column frame structure with a universal wheel at the bottom for flexible movement. The desktop uses a 25mm thick high-density substrate, and the surface is treated with high-temperature and high-pressure fire-resistant panels. The structure is firm and beautiful. The instrument and power supply are integrated and installed, which is easy to use and not easily damaged.
(2) The training platform has a good safety protection system.
2 Technical specifications
(1) Input Power: AC220V±10% 60Hz
(2) Fan: Supply voltage: AC220V/50Hz Power: 1.5kW; Maximum flow rate: 2.160m3/h
(3) Overall dimensions: 2000mm x 750mm x 2100mm
(4) Overall capacity: <2.5KVA
(5) Weight: <100kg
(6) Working conditions: Ambient temperature -10°C to +40°C Relative humidity <85% (25°C)
3 Product introduction
3.1 Power control panel
(1)The power control panel adopts an aluminum alloy frame and a closed box structure, which is integrated with the placement rack below.
(2)Configured with circuit breaker, power indicator, temperature adjustment knob, thermometer, power socket, differential pressure gauge, thermostat and intelligent electrical parameter measuring instrument
(3)The power input is controlled by the leakage breaker and the emergency stop control button is provided. In case of emergency, you press emergency stop button is so as to cut off the power.
3.2 Training workbench
(1)Training workbench:
The training table is supported by aluminum pillars, and the bottom universal wheel has a brake that can be moved and positioned flexibly. The desktop uses a 25mm thick high-density substrate, and the surface is treated with high-temperature and high-pressure fire-resistant panels. The structure is firm and beautiful.
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Specification
Training panel for investigating the thermal expansion of different pipe sections
• Length of each pipe section 1200mm
• Pipe sections can be selected by ball valves
• Water connections made using quick action hose couplings
• Operation with hot and cold water supplies
• Adjustment of the water temperature using mixing battery with thermocouple
• Temperature measurement using battery-operated digital thermometer
• Force measuring device to determine the expansion force
• Pipe section length: 1000mm
• Nominal diameters: – PVC, PE, Cu: DN15 – Cu: DN8 – Steel: 1/2″
• Mixing battery connection: 1/2″
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Specification
Training panel for investigating the pressure losses in pipe fittings such as elbows and bends
4different measuring sections, measured length of each section 2300mm, 10 elbows/bends
Pressure measurement with annular chambers with electronic differential pressure gauge
Flow rate measurement with Rota meter
Hose connections made using quick action coupling
Water feed via pressure reducer
Cold water connection
Differential pressure gauge with bleed – measuring range: 0…2000mbar – supply: 9V, battery-operated
Rota meter: measuring range 150…1600ltr/h
Outlet pressure at pressure reducer: 0.5…2bar
Pipe sections: measured length: 2300mm – Pipe section 1: steel, bend
1/2″, 90° bend – Pipe section 3: copper 18x1mm, 90° elbow – Pipe section 4: copper 18x1mm, 90° bend
Pipe and Fittings
7mm bore test section
13.6mm bore test section
13.6mm bore test section with four bends
13.6mm bore test section with four elbows
13.6mm bore test section with ball valve
13.6mm bore test section with angle seated valve
Expeirmental Capabilities
Determination of pressure drop across various pipes and fittings at differnet flow rates
Flow rate/diameter relationship determination for flid flow in pipes
Estimation of loss coefficient (K) for various pipes, pipe fitting and valve settings
Friction Factor determination for fluid flow in smooth pipes
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investigation of the pressure losses of flow through pipes
– measurement of the pressure differential on different pipe sections
– influence of various pipe diameters
– influence of different materials and surface roughness
– effect of the flow velocity
– comparison between experiment and theory
Specification
[1] investigation of friction-induced pressure losses in flow through pipes
[2] pipe elements are commercially standard components in heating and sanitary engineering
[3] clear panel mounted on a sturdy, movable frame
[4] four measuring sections with different pipe crosssections and materials
[5] pipe sections can be selected via ball valves
[6] water connections made using quick-release couplings in the inflow and return
[7] flow can be adjusted via valves
[8] flow measurement using rotameter
[9] differential pressure measurement via differential pressure meter with display
Technical Data
Pipe sections measuring length: 1000mm
– pipe section 1: transparent plastic, diameter: 20×1,5mm
– pipe section 2: steel, diameter: 1/2″
– pipe section 3: copper, diameter: 18x1mm
– pipe section 4: copper, diameter: 15x1mm
Differential pressure meter
Measuring ranges- flow rate: 150…1600L/h- differential pressure: -350mbar…350mbar
Dimensions and Weight LxWxH: 1650x700x1850mm Weight: approx. 92kg
Required for Operation
Water connection: 1500L/h, drain
