Teaching equipment : Refrigeration cycle demonstration unit

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Refrigeration cycle demonstration unit

DESCRIPTION

This refrigeration cycle demonstration unit is delivered complete with instrumentation as well as technical and Instruction manuals.

It deals with the demonstration of a refrigeration cycle involving mechanical charging, as well as the calculation and dimensioning of a refrigeration system.

It is designed and constructed to meet industrial standards

It may be used at different levels and in various fields of study.

Teaching equipment : Refrigeration cycle demonstration unit - CRD 400

It uses the refrigerant R 134 a as required by new regulations covering the use of refrigerants

TECHNICAL SPECIFICATIONS

1 - Sealed motocompressor
• Commercial type
• Electrical power : 1/8 CV
• Frigorific power : 402 W
- Condensation temperature : + 55°C
- Evaporation temperature : + 5°C
2 - H.P manometer compressor outlet – condenser inlet
3 - Safety valve tared at 14 bares
4 - Exchanger (condenser)
• Glass casing
• Stainless steel coil tube
• Network water entrance and evacuation
• Water flow measurement
• Temperature measurement at inlet and outlet
5 - Liquid tank
• Vertical, iron, capacity : 0.9 litre
6 - H.P. manometer liquid tank
7 - Service valve liquid point of departure
8 - Solid dehydrator
• With solid body Ø ¼
9 – Fluid state indicator – high pressure liquid 10 – Rotameter
• Magnetic transmission

• Needle display
• Stainless steel construction
11 – Thermostatic expansion valve
• With internal pressure equalization
• Calibration orifice of interchangeable flow
12 - Low pressure manometer expansion valve outlet – evaporator inlet
13 – Exchanger (evaporator)
• Glass casing
• Stainless steel coil tube
• Network water entrance and evacuation
• Water flow measurement
• Measurement of the inlet and outlet temperature
14 – SCHRADER micro valve
15 – Shock proof liquid bottle
16 – Low pressure manometer evaporator exit – compressor aspiration
17 – Safety high pressure/low pressure with manual winding
Voltmeter
Ammeter
2A Circuit breaker
Temperature indicator and commutator for the measurement at characteristic points

PEDAGOGIC APPLICATIONS

• Study of the basic concepts in a refrigeration unit which utilizes R 134a refrigerant
• Study of the important phases found in one refrigeration cycle ( compression – condensation – evaporation)
• Analysis of the theoretical refrigeration cycle
• Analysis of the real refrigeration cycle
- Determination of loss of charge
- Determination of overheating
- Determination of under cooling
- Determination of the refrigeration power through the evaporator
- Determination of the power through the condenser

• Calculation of thermal results through a condenser and through an evaporator
• Construction of the refrigeration cycle in a state diagram

Diagram of a theoretical refrigeration cycle
Diagram of a real refrigeration cycle
Power through the condenser

Teaching equipment : Refrigeration cycle demonstration unit - CRD 400 schema

Dimensions
Length : 780 mm
Width : 630 mm
Height : 620 mm
Weight : 51 kg

Utilities
Electricity : 230 VAC Mono 1.1 A
Other voltges can be provided on request
Water : 3 L/min (network)

Shipping specifications
Packing case size :
Length : 800 mm
Width : 660 mm
Height : 650 mm
Global weight : 51 kg

Specifications
The refrigeration cycle demonstration unit, CRD 400, is a refrigeration block of one compression stage of a commercial unit. It is equipped with the industrial materials generally used in the refrigeration industry.

This unit utilizes the refrigerant R 134, which is now the preferred refrigerant.

Optional extra
This unit can be computerized.

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Refrigeration cycle demonstration 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