Features: 

• This trainer should be develop to meet the training requirements for Refrigeration technology, Refrigeration fluid machinery, home use refrigeration equipment principle and maintenance, Cold storage technology 

• The refrigerating cycle system structure and the real object of the main components should be observed clearly.  

• Liquid-level glass should be adopted in the pipeline for refrigerant state observation, and a fault simulation suite should be adopted for troubleshooting. 

• Should be equipped with an AC voltmeter, AC ammeter, thermometer, vacuum manometer and signal lamps, the working condition of the air conditioner and refrigerator should be clear at a glance. 

• It must intuitively display the system structure and working principle of a heat pump-type split air conditioner.  

• It should integrate an air conditioner and refrigerator simulator and adopt a real refrigerating unit, which is perfect for teaching. 

• It should be configured with two systems: an air conditioner system and a comprehensive direct/indirect cooling type refrigerator system.

• The whole system should be actual, tight, and integrated and is composed of an air conditioner/refrigerator refrigerating system, an electrical control system, a fault simulation system, and so on. 

 
Experimental Capabilities: 

• Refrigerator working principle 

• Refrigerator fault phenomenon 

• Refrigeration system maintenance tool 

• Refrigeration system gas tightness examination 

• Refrigeration system vacuum treatment and refrigerating fluid filling 

• Air conditioner/refrigerator fault setting 

• Split air conditioner control principle 

• Air conditioner working condition Air conditioner fault phenomenon 

• Temperature routing inspection 

• Detection and fault analysis  

Technical Parameters: 

• Input power: Single phase AC220V, 50Hz 

• Installed capacity: Minimum 1.2kVA 

• Refrigerant: Air conditioner (R22), Refrigerator (R12) 

• Safety protection: Voltage leakage, current leakage protection. 

• Toolsto be supplied as standard:Portable welding torch, Rotary-vane, vacuum pump, Pipe bender, Dual-gauge valve, Adapter, Monkey wrench, Tapeline, Charging hose, Socket head wrench, Expand tube reamer, Cutting-off tool and Chamfering tool 

 
Control System Simulation Software: 

• Software should combine controller design & implementation into one logical process 

• This should reduce learning difficulties and help quickly to understand & create a working control system 

• User can use the software icons and wire them together on screen, just as they would draw a control system on a piece of paper 

• The icons should include important parts of controllers, signal generators, manually controlled signals & voltages and virtual instruments 

• The software can be used to record important variables 

• Plotting the results in a chart and exporting data for use in other programs  

• Students can create one or more types of controller and simulate the theoretical responses 

• The user guide should show users how to use the software and how to build and test common control systems, such as: 

• Design and implementation of three-term controllers 

• Design of controllers and filters 

• Simulated signals: Signal generator (sinusoidal, saw tooth & square wave), with variable frequency, amplitude & offset and D.C. level (fully variable) 

• Virtual instruments: Digital meter, Bar graph, Analogue meter, Oscilloscope and Chart recorder

• Controller blocks: Proportional gain, Integral gain, Derivative gain and Phase advance 

• Simulation blocks: Integer, First order system, Double integrator, Second order system, First order with integrator system and Second order under damped system 

• Other blocks: Gain, Voltage to frequency convertor, Delay, Discrete transfer, Saturation, Summing junction (three input), Multiplier (three input), Switch and Relay 

• Fuzzy logic blocks: Fuzzy Pot, Fuzzifier, Defuzzifier, Fuzzy Multiplexer & Demultiplexer, Fuzzy AND, OR & NOT, Fuzzy AND Table, Fuzzy Combined Meter and Fuzzy Single Meter Single user licensed version dongle 

Fault Demonstration Module: 

• Should be provided with a dedicated 25-pin interface for the connection of the module to the training platform, the module should be provided with a common fault setting point for the simulation of system faults, such as power circuit faults, temperature sensor circuit faults, drive circuit fault, compressor protection circuit fault, indoor fan speed regulating circuit fault, etc.

• There should be 20 fault switches available for the air conditioner (intelligent for 16 faults) and 5 fault switches available for the refrigerator. 

Working Principle Demonstration Module: 

• Remote control split type air conditioner working principle demonstration module Refrigerator working principle demonstration module