Environmental ´Walk-In´ Psychrometric Test Rooms

Designed for the development and performance evaluation of air conditioners and heat pumps. Air conditioners may be in the form of through the wall units, floor standing evaporator split systems and Package Units.

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Temperature / Humidity control
‘Walk-In’ Environmental Chambers for
Air Conditioners and Heat Pumps Testing

The two climatic rooms will be side by side simulating “Indoor” and “Outdoor” conditions with temperature, humidity and air flow independently controlled. Each chamber can include an Air Enthalpy Measuring device to enable precise measurement of capacity and efficiency of air conditioners and heat pumps in accordance with the air enthalpy method.

 

Heating, Cooling and Humidity system

  • Heating provided by electrical heating elements. The variable heater will be
    powered through a SCR Power Controller. Available heating power – 30KW.
  • Cooling by direct expansion. Cooling capacity control will be provided by a true
    0-100% modulation. Available cooling power – 30KW.
  • Humidification with steam generator(s)
  • Drying by direct expansion effect

 

Construction

  • Sandwich panels EN 14509 Class M1 with injected polyurethane insulation
    100mm thick, CFC free
  • Interior: AISI 304 stainless steel walls and ceiling
  • Floor in AISI 304 stainless steel reinforced to 1000 kg / m2 with sewer point
  • Exterior: Steel zinc-plated lacquered finish RAL 7035
  • Interior security opening
  • Access ramps
  • Removable inner partition wall
  • Pass-through holes and dimensions according to client specifications

 

Air Enthalpy measuring Device

The Air Enthalpy Measuring Device will measure air enthalpy values and
determine air flow values and thermal capacities. The tunnels test Room Air
Conditioners Indoor and Outdoor Side Cooling or Heating Capacity in a
draw-through mode and also fan/blowers air flow capabilities.

The Air Enthalpy Measuring Device provides the sensors needed to
automatically obtain the airside enthalpy measurements which are critical to the
accuracy of the capacity measurement.

 

Other Features

  • Hardware and software for automatic control and acquisition of several raw data to
    perform tests according the air conditioners and heat pumps standards.
  • With this system we supply all sensors and measurement equipment necessary to
    comply the air conditioners and heat pumps standards.
  • Water circuit with automatic control to perform the tests according the heat pumps
    standards.

 

Standards

  • DIN EN 14511
  • DIN EN 14825
  • DIN EN 16147
  • ISO 13253
  • ISO 5151
  • JIS B 8615-1
  • ASHRAE 41.
  • ASHRAE 41.6
  • ASHRAE 41.2
  • ASHRAE 41.1′

 

Technical Specifications

DIMENSIONS (H x W x D) (mm)
Interior: 2.800 x 3.500 x 4.010 mm
Exterior: 3.010 x 7.920 x 4.210 mm
(Aralab can customize the size of the chamber)

Indoor room:
TEMPERATURE RANGE (ºC): +5ºC to +45ºC
TEMPERATURE STABILITY: <± 0,5ºC
TEMPERATURE UNIFORMITY: <± 2,0ºC
HUMIDITY RANGE (% rH): 20% to 90% RH
STABILITY: <±2% rH
UNIFORMITY: <±2% RH

Outdoor room:
TEMPERATURE RANGE (ºC): -30ºC to +60ºC
TEMPERATURE STABILITY: <± 0,5ºC
TEMPERATURE UNIFORMITY: <± 2,0ºC
HUMIDITY RANGE (% rH): 20% to 90% rH
STABILITY: <±2% rH
UNIFORMITY: <±2% rH

ELECTRICAL CONNECTION
3/N/PE AC 400V 10%; 50Hz


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