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CRA 530


Teaching suggested applications*

-          Identification of the components of an air handling unit and a refrigeration unit with direct expansion.

-          Commissioning and controls of operation of the unit.

-          Measures of operating parameters (air temperature, relative humidity of the air, air velocity, and differential pressure).

-          Study of heat exchanges and transformation of the air (electric heating coil, direct expansion cooling coil, humidifier).

-          Plot of the air cycle on a psychometric diagram.

-          Plot of fan characteristic curve (pressure according to flow rate)

-          Study of the refrigeration cycle and plot the cycle on an enthalpy diagram


The CRA530 bench allows the study of an industrial air handling unit single-flow type (a fan). It includes the classic elements of a network, namely: filters, a cooling coil, a cooling unit, a humidifier, a heating coil, a fan blower and mixing dampers.

Students will as a first step identify the components of the unit and the direction of air circulation.

They will then activate the system under conditions prescribed by the teacher (cooling mode or heating mode).

When the operation plan is established, then they must measure the operating parameters (temperature, humidity, air flow rate) with portable devices provided.

The next job is to exploit the measures by drawing the air cycle on a psychometric diagram and by calculating the powers of the exchangers.

The air handling bench also allows to study the refrigeration cycle through the direct expansion condensing unit.

 The robust design of this device makes it suitable for use in schools. The equipment is set up on an anodized aluminium frame on casters with wheels. This gives it great strength and a flexibility of integration into your premises. The manufacture of this equipment complies with the European standard for machinery manufacturing.

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*Teaching suggested applications


ZA du Parc
42490 Fraisses

Phone number/Fax

+33 (0)4 77 10 10 10
+33 (0)4 77 61 56 49


Please, give us your technical and teaching requirements and we will manufacture for you your new system.


Because we have the experience, and choose the best suppliers we will assure features and relevance.

The essential of DIDATEC :

Standard range distribution - Research department / Customization

 Units of : Demonstration, Teaching and lab manuals, Research and development.

Technical and lab manuals - Advice and layout plan studies 

Warehouse and trials : 1600 m², Research department : 150 m², Spare parts : 300 m².

Because all systems are being manufactured at our plant, accordind to your specific needs and budgets we will assure quality and long-lived. 

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