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Large Climatic Chamber

This chamber is unique due to its exceptionally long test section, accommodating vehicles as large as an articulated bus. It also contains a Mustang 1,000 horse-power chassis dynamometer and a solar array to simulate the sun. You also have the option of connecting to the Small Climatic Chamber through an inter-chamber door, which permits the insertion of a test bench to effect a 'three-chamber' mode that includes:

  • Climatic Aerodynamic Wind Tunnel
  • Large Climate Chamber
  • Small Climate Chamber


A vast number of sectors can utilize ACE’s climatic chambers. Any product, component or idea that needs climatic validation or testing will find significant value in this chamber.

Testing examples:

  • Cold or hot starts for vehicles
  • Engine tuning (on Mustang dynamometer)
  • Heating, ventilation and air-conditioning (HVAC) testing
  • Physiological/cognitive human trial tests
  • Product validation in extreme temperatures or solar conditions

A white Dodge Ram is on the dyno in the Large Climatic Chamber.

Key features

  • Exceptionally long test section to permit articulated buses.
  • Temperature from -40oC to +60oC and relative humidity from five per cent to 95 per cent.
  • Chassis dynamometer.
  • Solar simulation system up to 1,200 W/m2  intensity.
  • Inter-chamber door to small climate chamber, which permits the insertion of a test bench to effect a  ‘three-chamber’ mode.
  • Complete suite of ancillary systems for customer vehicle operation, including hydrogen and electric vehicle compatibility.
  • Up to 350 kW in-chamber modular DC fast-charge capability.
  • Up to 19.2 kW of AC power capability.

350 kW DC Fast Charger specifications

Specifications Terra HP 350
Max Output Power

350 kW peak

320 kW continuous

AC Input Voltage Range UL: 3-phase, 480Y/277 V AC +/- 10% (60 Hz) CSA: 3-phase, 600 V AC +/-10% (60 Hz)
AC Input Connection L1, L2, L3, GND (no neutral)
Nominal Input Current and Input Power Rating

UL: 2x231 A, 384 kVA

CSA: 370 A, 384 kVA

Recommended Upstream Circuit Breaker(s)

UL: 2 X 300 A

CSA: 2 X 250 A

Power Factor ≥ 0.97
Current THD IEEE 519 Compliant; <8%; option for 5%
DC Output Voltage  150 – 920 VDC
DC Output Current

500 A CCS-1

200 A CHAdeMO

Efficiency 95% at full load

AC Mobile Charger specifications

Charger/EVSE Location Output Capacity Charging Protocol
Power Charge EX-1193 EVSE
(Two Available)
Mobile 208-250 VAC
89A Continuous
19.2 kW SAE J1772
Clipper Creek DS-100 EVSE Mobile 240 VAC
32A Continuous
7.2 kW SAE J1772

An ACE employee wearing a blue shirt is plugging in the AC charger into a grey Jeep Sahara in the Large Climatic Chamber.

Test section features 

Overall Dimensions
  • Length: 20.8 metres
  • Width: 6 metres
  • Height: 5.55 metres
Vehicle Entry Clearance
  • 3.93 metres wide x 4.49 metres high to outside.
  • 4.26 metres wide x 4.49 metres high to transfer area.
Inter-Chamber Door Clearance
  • Width: 2.01 metres
  • Height: 2.01 metres
Primary Exhaust Extraction System
  • Dual mode: open-pipe or closed-pipe with back-pressure regulation.
  • Maximum flow rate: 0.62 kg/sec (8.5 litre, 400 horse-power engine)
  • Maximum inlet exhaust temperature: 650oC.
Secondary Vehicle Exhaust Extraction System Garage-type open pipe (two pipes).
In-Chamber Power Outlets for plug-in vehicles.

Thermal performance specifications 

Thermal Performance Specifications

Other performance:

  • Maximum cooling rate: +60oC to -40oC in six hours.
  • Temperature uniformity: σ = 0.33°C (tested at 20°C).

Chassis dynamometer specifications

Manufacturer and Model Mustang Engineering Co (MD-AWD-500-SE)
Vehicle Types Passenger car, light duty trucks
Axle Configurations
  • front-wheel drive (FWD)
  • rear-wheel drive
  • four-wheel drive
  • all-wheel drive (AWD)
Roll Width 940 mm (seven identical per side: five front, two rear)
Clear Space Between Rolls 610 mm (identical front and rear)
Wheelbase Range 2,134 to 3,556 mm
Mechanical Inertia
  • 888 kg (front)
  • 983 kg (rear)
Total Inertial Simulation Range 907 to 5,448 kg
Maximum Axle Load 2,727 kg
Maximum Vehicle Weight 5,448 kg
Maximum Speed
  • 280 kph FWD
  • 240 kph AWD
Motor Type
  • Eddy current, power-absorbing only
Nominal Maxim Power
  • 447 kW (front roll set)
  • 894 kW (total)
Continuous Tractive Force Rating
  • 6,227 N (front roll set)
  • 12,455 N (total)
  • robot driver
  • customer-specified drive cycles

A gray Jeep Sahara is on the dyno under the solar array in the Large Climatic Chamber.

Solar simulation system specifications 

Manufacturer KHS Steuernagel
Target Size
  • Length: 5.6 metres
  • Width: 2.5 metres (fixed)
  • 1.5 metre above test section floor
Intensity Range 600 to 1,200 kW/m2
Spectrum ASTM Std E-892
Intensity Quality
  • Uniformity ±10 per cent
  • Stability ±2 per cent
  • Metal halide
  • 18 total

The solar array lights are on in the Large Climatic Chamber.

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