Many data centers are located in the interiors of lower levels and basements in buildings, so an
air-side economizer might not be the most cost-effective solution because the data center is hard to reach.
Two basic approaches that accomplish this are
air-side economizer cycles and water-side free cooling.
In most climates however, the switchover from chiller operation to
air-side economizer mode for data centers should be based on enthalpy controls, not on dry-bulb temperature alone.
In addition to displaying live building performance data, educational demonstrations show how the sustainable features in place at the data center actually work, like how free cooling is used to rely on low outside air temperatures to help chill the building's water, and how an
air-side economizer reduces the facility's energy consumption costs.
Note that for fan systems, during occupied hours, Q is the coil load, including the sensible and latent load of conditioning the ventilation air with credit for any
air-side economizer capacity at prevailing return-air and outdoor-air conditions.
One example would be to identify when an
air-side economizer might not be working in the right weather conditions.
ASHRAE Guideline 16-2003, Selecting Outdoor, Return, and Relief Dampers for
Air-Side Economizer Systems.
Therefore, the recommended approach of using an outdoor air humidity ratio obtained through the internet can significantly improve
air-side economizer operations.
The proposed method was evaluated using data obtained for an
air-side economizer and mixing chamber integrated with a typical small commercial rooftop air conditioner.
Get your utility costs under control by adding an
air-side economizer.
5[degrees]C) as shown in Table 2, which also shows a quick comparison of number of hours when free cooling is available with conventional
air-side economizer as well as with the installed cooling system.
