Teaching equipment : Simulation of 15 failures Unit

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Simulation of 15 failures Unit

DESCRIPTION

The simulation of 15 failures unit is delivered complete with instrumentation and includes a technical and instruction manual.

Designed and manufactured to industrial standards.

This unit can be used at different levels and in various fields of study.

Uses refrigerant R134a as required by new regulations.

Teaching equipment : Simulation of 15 failures Unit - CRC 115

TECHNICAL SPECIFICATIONS

Semi sealed compressor
• Commercial type
• Refrigerating fluid R 134 A (CH2F/CF3)
• Nominal power : 1/2 CV
• Refrigerating power : 1230 watt
- Condensation temperature : + 32°C
- Evaporation temperature : - 10°C

Air condenser
• Forced convection
• Copper tube and aluminium blades
• Electric power of the fan : 80 W
• Air flow : 0,4 m3/sec.
• Pressure speed variator

Liquid tank
• Vertical, in steel
• Capacity : 3.1 dm3

Different expansion methods
• Capillary expansion
• Expansion by internal equalization thermostatic expansion valve

• Expansion by external equalization thermostatic expansion valve
• Expansion by manual valve Evaporators
• Forced convection
• Copper tube and aluminium blades
• Electric power of the fan : 43 W
• Refrigerating power : 590 W
• - TO = -8°C / Dt = 8 k

Other refrigeration components
• Oil separator
• Deshydrator
• Electromagnetic valves
• Manual valves, low pressure regulation valve
• Liqui-vapor exchanger
• Shock proof liquid bottle

Instruments
• HP and BP switch pressure and manometers
• Flowmeter with floater
• Digital thermometer with Pt 100 Ω probe
• Switches for electric failures simulation

PEDAGOGIC APPLICATIONS

• Study of the basic concepts found in a R 134a refrigeration installation

• Simulation of failures common to the refrigeration and electrical circuit, initiated by an infrared remote control. Failures simulated are:
- Fault for lack of charge
- Fault for excess of charge
- Bad exchanges at the condenser
- Bad exchanges at the evaporators
- Cloudy dehydrator
- Expansion valve leakage
- Improper functioning of the expansion valves
- Improper functioning of the constant pressure valve
- Over-intensity on the compressor engine
- Phase cut on the compressor engine
- Condenser fan cut out
- Evaporators fan cut out
- Fault in the electrovalve coil
- Fault in the security pressure switches
- Fault of short cycle temporisation

• Study of different expansion methods and their failures

• Study of evaporator coupling in parallel

• Calculation of heat exchanged at the condenser and evaporator and a comparison of theoretical and practical efficiencies
Construction of the refrigeration cycle in a state diagram.

Teaching equipment : Simulation of 15 failures Unit - CRC 115 schema

Dimensions
Length : 1 500 mm
Width : 700 mm
Height : 1 800 mm
Weight : 210 kg

Utilities
Electricity : 400 V three phases - 50/60 Hz
Other voltages can be supplied on request

Shipping specifications
Packing sizes :
Length : 1 610 mm
Width : 780 mm
Height : 2 010 mm
Global weight : 286 kg

Specifications
The CRC 115 positive refrigeration unit is a refrigeration block with one level of compression similar to that currently found in industrial applications.
This equipment is designed for the study of basic concepts in refrigeration and covers the basic refrigeration mechanisms.
It utilizes refrigerant R134a currently recommended for positive refrigeration installations.
This unit is delivered with a supply of the refrigerant and with a valve, which allows for the recovery of the refrigerant.

Options
This unit can be computerized

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Simulation of 15 failures Unit

Didatec Technologie - ZA du Parc 42490 Fraisses - France - Tel : 33 (0)4 77 10 10 10 - Fax : 33 (0)4 77 61 56 49
E-Mail : didatec.technologie@wanadoo.fr