Outside Air Economizer

  • World class energy efficiency with no sacrifice in reliability
  • Data Center Power Usage Effectiveness (PUE) as low as 1.2
  • Economizer hybrid system provides the lowest PUE of any available system
  • A complete server room cooling solution all in one package for easy installation
  • Requiring a Capital Expenditure only slightly higher than a Legacy CRAC design

Economizer cooling systems allow data center operators to achieve PUE’s in the range of 1.2

Thanks to the Economizer hybrid system, it is no longer necessary to install expensive to operate and space consuming Legacy systems utilizing (CRAC) units to achieve proper conditions and insure system reliability within your data center. With fewer more efficient Economizer hybrid systems, Operating Expense is reduced to the absolute minimum, below all other types of Data Center systems. Many combinations of components are available to customize the design for local ambient conditions as well as supply air requirements. Sizes available range from 25,000 CFM up to 150,000 CFM per unit and cooling capacities up to 500 TR.

The Economizer hybrid system allows data center operators to achieve unheard of PUE’s in the range of 1.2 and lower in some cases. With all the equipment located outside of the server room, the need for access to under floor areas is eliminated, and server room space previously used for CRAC units is available for revenue generating use. With maintenance activities completely outside the sever room security and contamination risks are greatly reduced as well. Previous attempts to reduce Cap Ex by utilizing modified commercial grade Legacy rooftop systems have produced disastrous results with energy usage and maintenance costs creating Op Ex far in excess of the Cap Ex saving realized.

Current ASHRAE TC 9.9 standards allow many hours of operation in dryer climates without the use of any mechanical cooling. As server manufacturers continue to expand the recommended operating envelope these hours should increase even further making your installation of an  Economizer hybrid system an even smarter solution.

With the Economizer hybrid system only two envelope penetrations are required for installation of the complete system. The unit can be curb mounted or raised above the roof on structural steel. If required, units with side or top discharge and return can be provided for grade level installation. This avoids potential structural issues on existing buildings and can significantly reduce the need for envelope modification costs offering the possibility of significant Cap Ex savings.

Please contact us with your requirements and we can work together towards a solution tailored to your needs.

Orange is “mixing of OA & RA. Dark green is direct evaporation (cools and adds moisture so it is a diagonal line). Yellow is 100% OA. Light green is indirect evaporation (flat line since it is sensible cooling only). The purple is Compressor operation.

Unique economizer that feeds full CFM to both supply and exhaust airstreams at all times. The incorporation of full OA capability reduces the need for 100% mechanical cooling back-up in many applications.

Direct Evaporative cooling refers to anytime water is actually evaporated in the process supply air stream. The result is always a reduction in Dry Bulb accompanied by an increase in the grains of moisture present.


Features

  • Cabinet walls and floor are available in a wide variety of materials including Galvanized Steel, Aluminum, and Stainless Steel
  • Systems utilize a perimeter base frame constructed of Structural Steel to insure minimum deflection and maximum unit life
  • Guaranteed to have leakage rates below 1% of airflow at design CFM & static pressures up to 1.5 times design