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Case Study Engineering: Custom Temperature Control in Complex Structures

Engineering: Custom Temperature Control in Complex Structures


The Linq High Roller Case Study

The Challenge: Control the temperature in each cabin of the world’s largest observation wheel: Caesars Entertainment’s High Roller observation wheel at the Linq. The High Roller is 550 ft. tall and features 28 cabins, which hold 40 guests apiece. It is expected to operate 18 hours per day, 365 days a year. However, designing the complex HVAC/R systems used for temperature control was daunting considering daytime temperatures average highs of 104°F in July and lows of 39°F in December in Las Vegas. User safety and comfort were top priorities. The solution also had to fit beneath the floor of each glass-encased cabin and conform to the walls of the observation wheel with no square corners.

high_roller-300x263-compressed

 

 

Custom HVAC in Linq High Roller Cabin

 

 

The Solution:  Air Innovations’ temperature control solution includes 2 custom environmental control units (ECUs) in each cabin, with each ECU composed of dual, redundant refrigeration circuits.  Since each circuit operates independently, each environmental control unit has a failsafe should one of the circuits experience a failure. The net result is 4 independent circuits per cabin.

Each temperature control system communicates directly with and can be controlled by the base operation (at the bottom of the wheel). The independence of each circuit coupled with the remote control allows for load-shedding on moderate temperature days. In the highly unlikely scenario that all electrical systems in the cabin shut down, Air Innovations included a fifth cooling failsafe: a battery-operated ventilation fan that provides a level of ambient cooling until that cabin reaches the ground. Each custom environmental control system can also provide heat.

 

Key Specifications:

  • Design ambient range is 25°F to 108°F (-3°C to 42°C), full sun exposure.
  • Airflow is 1,200 CFM per ECU (2 ECUs per cabin)
  • Internal control range 67°F and 73°F (19°C and 23°C)
  • 4kW electric re-heaters to provide heat on cold days
  • UL listed
Observation Wheel Cabin

Cabin of High Roller Observation Wheel

Custom ECU for High Roller

Custom Environmental Control Unit for High Roller Wheel

 

 

 

 

 

 

 

 

 

The Result:

  1. All design specifications were met.
  2. Each custom environmental control unit conforms to the convex sides of the mechanical compartment beneath the floor.
  3. The design supports rapid change-out without any access to ductwork or piping connections to the ECU. All access is from above the ECU (not beneath or beside it, which would require more down time). All utilities are connected via a tub and designed on a nesting principal.
  4. The environmental control units for this complex engineering structure incorporate multiple redundancies, supporting both safety and system efficiency.

 

Why Air Innovations?

Linq High Roller Cabin Interior

Artist’s rendition of the cabin interior in the High Roller

You need a design more specific to your application than just a modified commercial off-the-shelf product.

You’re frustrated with your current vendor’s quality

If you’re ready for a custom solution from Air Innovations, contact us by submitting a quick Project Inquiror by calling 1-800-835-3268 today.

 

Just Ask Our Clients

"I'm really impressed with the how the unit is responding to the test parameters, and the recovery times are exceptionally impressive. Your attention to detail and expertise is very evident with how the PECS is performing during this final test phase."

Ed Duben - Mission Management, United Launch Alliance


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