Colt - air-conditioning systems with Water Refrigerant Flow (WRF)

Project location:

• Heathrow, UK

Project Details:

• Client:
  Ramada Jarvis
• Architect:
  Dexter Moren
• Consultant:
  RYBKonsult
  
• M&E Designer & Installer:
  J S Wright
• Area served:
  4,500 m² (gross)
• No of Indoor Units:
  200
  
• Outdoor Units:
  2xCHA 604 (with ground source application)
• Date of completion:
  2008

Colt Products:

• Colt Caloris - Water Refrigerant Flow (WRF) air-conditioning systems

Leaflet:

• Ramada Jarvis

  135 kb

Caloris, Colt's Water Refrigerant Flow (WRF) air-conditioning system, will be installed at the Ramada hotel at Heathrow, which is currently undergoing re-development, due for completion in August 2008. Chosen for its compatibility with GSHP (Ground Source Heat Pump) technology, plus its energy, cost and space saving qualities, Caloris will also provide air-source back up to the GSHP system.

Ramada Jarvis Hotel (front view)

Caloris WRF indoor units will be installed in all 200 rooms at the hotel, and two Colt WRF outdoor units have been linked into the GSHP system. GSHP systems are one of the most energy-efficient ways of heating and cooling buildings, achieving very high Coefficients of Performance (COP). Since Caloris achieves a typical COP of around five, the combined technologies are an extremely energy efficient partnership.

Ramada Jarvis Hotel (front view)

In addition to its compatibility with GSHP, Colt Caloris air-conditioning systems revolutionary design makes it perfect for hotel applications, offering de-centralised, local control, adjustable by individual room occupants, and its indoor, horizontal units are amongst the quietest and slimmest on the market. Unlike VRF (Variable Refrigerant Flow) air-conditioning systems, Colt Caloris uses water to distribute energy between the different indoor heat pumps, meaning that a minimal amount of refrigerant charge is used, removing the need for a costly refrigerant leak detection system in each room while avoiding internal pipe-work inspections required by the F-gas regulations. Since each unit works independently, any problems can be localised.

The space saving meant that linen rooms, which would have needed to house refrigerant to water heat exchangers, are free of plant, thereby vastly increasing the available space.