Geneq > Teaching Equipment > Energetics

Air conditioning unit
Model CRA 545


  • The air conditioning unit is delivered complete with instrumentation and with technical and instruction manuals.
  • The components are of industrial quality.
  • The operation is similar to that of larger capacity units.
  • This unit is designed to be used to air condition existing premises.
  • Treatment area in depression.
  • Mixing chamber through induction.
  • It is possible to measure what enters, what happens and what goes out.
  • Transparent treatment chambers for easy visibility.
  • Easy access to the elements.
  • Use of the refrigerant R134a as required by new standards
  • All the inlets of the controller are connected to 04 mm banana bushings that makes it possible to use the unit in the manual or regulated mode (connection to the "regulation and air conditioning unit " RTC 200)
UTILITIES
Electricity : three-phase 400 V - 50 A
Water : 1 L/min of the network and outlet
Air networks connections on the machine in Ø 355 mm

DIMENSIONS
Length : 3 500 mm Width : 800 mm Height : 1 700 mm Weight : 400 kg

Application
  • Study of the components of an installation
  • Working in heating or refrigeration (refrigeration fluid and/or cold water)
  • Determination of thermal balance
  • Influence of the ratio of new air to recycled air
  • Influence of air speed
  • Study of changes in relative humidity
  • Exchange efficiency
  • Loss of charge from different components
  • Study of control
  • Temperature/humidity
  • Free cooling

Specifications
  • Mixing chamber
    - Servo motor piloting three flaps simultaneously : new air - recycled air – extracted air
    - Command 0 – 10 V for 0 – 100 % recycled air
  • Filtration
    - Gravimetric rough filter
    - Opacimetric thin filter
  • Cooling/deshumidification
    - Single-stage trigger battery
    - Fluid R 134 a
    - Refrigerating group Qo 6,3 kW at + 5°C
    - "pump down" regulation
    - T.O.R. command
    - Frosted-water battery
    - Water 7 … 12°C controlled by 3-way valves and servomotor
    - Frosted water group – condensation by assembled air on castor and equipped with quick-coupling flexibles
    - Servomotor command 0 – 10 V for 0 – 100 % opening
  • Humidification
    - Dry steam
    - Capacity : 4 kg/h
    - Adjustment and controller by digital display
    - Electrode heating principle
    - Command 0 – 10 V for 0...5 kg/h
    - Pulverized water
    - Only manual mode
    - Pressure and flow measurement at pulverizer Heating
    - New air preheating
    - 3-stages of 2.5 kW - electric
    - Manual command
    - Treatment heating
    - 1 stage of 6 kW - electric
    - Command 0 – 10 V for 0…6 Kw
  • Ventilation
    - Draft fan
    - Nominal flow : 1400 m3/h
    - Frequency deviation on the engine
    - Transmission by pulley-belt
    - Extraction fan
    - Nominal flow : 1400 m3/h
    - Frequency deviation on the engine
    - Direct coupling
  • Instrumentation
    - 7 temperature and relative humidity measurements
    - 8-columns manometer for static pressure measurement throughout the treatment
    - Pitot Tube and liquid-column micro manometer for speed and air flow measurement
    - Refrigeration fluid flowmeter and high and low pressure manometer on the direct spring-back group
    - Condensation pressure adjustment on refrigeration group by pressostatic variator on a condenser fan.
  • Underframe
    - Anodized aluminium extruded section
    - Transparent lateral pans – easy to dismount
    - Cross section 610 x 305 mm²