4 projects
Hotels
Hotel energy audits for buildings that run around the clock: cooling, hot water, lighting and pumps.
Where energy usually goes
Illustration
- Chiller plant
- Hot water
- 24-hour lighting
- Pumps
Systems 2R audits here
- Cooling tower · rejects the chiller's heat outdoors
- Chiller · makes the chilled water for air-conditioning, often the biggest single electrical load
- Condenser water pump · circulates water between the chiller and the cooling tower
- Chilled water pump · sends chilled water to the air handlers; a VSD lets it follow the load
- Air handling unit (AHU) · blows air across the chilled-water coil and into the building
- Ultrasonic flow meter · clamped on the chilled-water pipe to measure flow and cooling load (RT)
- Power logger · logs kW, kWh and power factor over days: Meatrol Mi550 / Fluke 430 Series II
Illustration of typical systems, not a client's plant.
- Air handling unit (AHU) · blows air across the chilled-water coil and into the building
- Fan motor + VSD · varies the fan speed with demand instead of running flat out
- Cooling coil · chilled water in, cooled and dried air out
- Supply duct · carries conditioned air to the rooms
- Ceiling diffusers · spread the supply air across the room
- Return air · room air goes back to the AHU to be cooled again
- Room sensor · temperature or CO₂ reading that tells the AHU how hard to work
- Anemometer · air speed at the diffusers, to check the airflow: UNI-T UT363
Illustration of typical systems, not a client's plant.
Relevant services
Get this for your facility
Tell us about your building or plant and we'll recommend the right next step: an audit, an energy-saving project or EECA compliance support.