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The Great Lakes ES Enclosure and its wide variety of
accessories have been engineered to make it easy to
mount, connect and network electrical equipment from
any manufacturer, within and between the enclosures
installed in a data center.

Whether you are working with “hot aisle/cold aisle”
configuration, ducted exhaust, slab floor or containment,
Great Lakes has the expertise, experience, products,
accessories, engineering support and manufacturing
capabilities to meet your specific need.
Power and cooling are of prime importance to any
data center manager. Great Lakes has developed
a number of approaches from simple to complex,
which will allow the enclosure to provide power
distribution while protecting and cooling rack-mounted
equipment, in a manner which still allows for a wide
range of desired approaches to cabling and connectivity.

Content for class "clear" Goes Here
  • 4-8 kW
  • 8 kW
  • 10 kW
  • 10 kW+
  • Chilled Water
  • Closed Loop Enclosure
  • Containment
  • Future Proofing
4-8 kW Cooling options make the most of the core elements included in each Great Lakes ES Series Enclosure

These basic accessories provide a simple approach designed to maximize the amount of conditioned air made available to cool the servers,while expediting the removal of hot air through the rear of the enclosure. While actual matrices will be based on the type of infrastructure associated with a specific data center design and its overall CRAC output, the Great Lakes ES Enclosure is targeted at the delivery of at least a 4-8 kW load per enclosure cooling solution, with only the most basic of enclosure options, to include:

Mesh front and mesh rear doors (designed to provide strength and rigidity,
along with 63% open area)

An option for a Rear, Split-fan door to expedite the removal of hot air from the enclosure

The ES Series
The ES Series enclosure is designed to accommodate servers and the challenging conditions associated with them, from high density population, to extensive cable management, power and cooling requirements. As demands placed on server enclosures continue to grow, Great Lakes has responded to the challenge with deeper enclosures, more functional accessories and innovative engineering designs that can meet the evolving needs of data center managers. As is the case with any Great Lakes enclosure, the ES Series is able to accommodate the equipment, cable and connectivity of any manufacturer, allowing the data center manager the most flexibility possible in design and supplier selection.
A Medium (8 KW) cooling solution can also be easily implemented

Brush Grommet Kit

Adjustable Chimney

Chimney Fan Tray

Great Lakes
Mounting Rail

In order to increase the cooling effect within the enclosure, the goal remains to direct conditioned air and to restrict the possibility of hot air recirculation. At the same time, any proposed solution must also allow for any desired cable management in the front of an enclosure.

The use of the Great Lakes Brush Grommet Kit, designed to mount to the proprietary Flexible Mounting Profile* found in each Great Lakes rail, helps to prevent bypass air flow and to keep conditioned air in the front of the enclosure. While brush grommet prevents hot air recirculation and prevents conditioned air from passing by the equipment mounted within the enclosure, it still allows for any desired cable management within the enclosure.

A Medium Cooling solution could also include optional fans in the front mesh door in order to accelerate the intake of conditioned air into the front of the cabinet, as well as its movement through the equipment mounted within. The employment of split fan rear doors can assist in the removal of hot air from the enclosure. This solution can be further enhanced by the installation of an optional fixed/adjustable ducted chimney to channel the natural upward movement of hot air, removing it from the enclosure through an upper rear opening to which the chimney may be attached. Heat removal may be further activated by the addition of an exhaust fan, to be mounted within the chimney.

This Medium Cooling Solution is targeted at the delivery of 8 kW through the use of some simple enclosure options and accessories. Actual cooling shall be based on the options, accessories and techniques employed, as well as the conditions and efficiency of the computer room air conditioning system employed in the data center.

*The Flexible Mounting Profile (FMP) is a series of holes along each rail, installed at one-RMU increments, and located outside the standard pattern for all EIA rail-mounted equipment. From copper bus bars to cable rings, cable managment posts and other accessories, the design and manufacture of Great Lakes rails is so strong that virtually nothing mounted to the FMP will take away from the dimensional stability of the rail itself.

The rails in Great Lakes’ ES series enclosure are #12 gauge steel, formed three times for
added strength. An ES enclosure can support more than 2,000 pounds of mounted equipment.

The most active and aggressive solution without additional cooling from an outside source
involves the use of Great Lakes' Lake Effect
High Performance Vanaxial Fans
Thermal Enclosure (10 kW)

The Lake Effect Thermal Enclosure utilizes the proprietary concept of "accelerated ambient cooling" to provide an even flow of available low temperature air to the front intake face of servers and equipment mounted inside the cabinet. That air is accelerated and directed by an 8 RMU fan box, within a pressurized plenum chamber, to more efficiently cool the mounted equipment, while minimizing any chance of by-pass airflow. This approach creates an environment which allows for the delivery of air at the same temperature and quality to the face of every server in the cabinet.

The Lake Effect server enclosure utilizes high performance vanaxial fans and the entire fan box draws less than 2 amps, allowing the Lake Effect enclosure to create a functional usable air environment with minimal power requirements.

(The number of servers which may be placed in an enclosed cabinet is directly related to the amount of air available to cool the equipment. The temperature available at the base of the fan box is limited to the ambient temperature associated with computer room air conditioning (CRAC) or base room temperature.)

The Lake Effect enclosure offers an environmentally responsible approach: requiring no infrastructure changes to implement. It can be deployed across a data center or employed selectively for high-density cabinets. The Lake Effect can be placed, configured and become operational immediately, maximizing available ambient air, conditioned or not.

3D Computational Thermal Analysis was independently tested and verified by Flomerics, using Flotherm software. Computer models were coupled with powerful fluid dynamic software that predicts airflow and heat transfer in and around electronic equipment. Model includes thirty-six 1 RMU servers dissipating 10,000 watts total, 10 kW+ (continuous load) equipment load, and even temperature across equipment intakes. (Intake ambient air 65°F, 1224 CFM at 1/8" H20 static pressure.)

The next most aggressive approach would be a high cooling solution

3D computational thermal analysis of
GL840ES-2442 was independently tested and verified by Naissus Thermal Management Solutions, Inc.

With air manager (and optional chimney)
Actual temperature will be based on actual data center conditions

In a typical raised floor data center, conditioned air moving vertically from a raised floor or empty data center space (white space) is being asked to pass into an enclosure, in order to cool the equipment mounted inside. The result is a lot of "white space" being cooled.

The Adjustable Air Manager mounts in the bottom of a Great Lakes ES Series Enclosure on a raised floor to bring the conditioned air inside the enclosure closer to (and helping it pass though) the equipment to be cooled. A simple slide on the Air Manager allows you to control the flow of conditioned air coming into the bottom of the cabinet. This increases air flow to and lowers intake temperatures in the front of the equipment, while also maintaining air pressure within the enclosure.

The Air Manager also uses the Great Lakes concept of "Accelerated Ambient Cooling" to greatly improve the efficiency of the available conditioned air intended to cool equipment mounted within the enclosure. By managing and directing the available conditioned air, it nearly eliminates bypass air flow outside the enclosure.

This effect can be further enhanced through the use of an optional high-efficiency fan unit, mounted within the Air Manager to increase the acceleration of air into the enclosure. Other compatible accessories include Great Lakes' Brush Grommet Kit to keep any conditioned air from bypassing the equipment mounted within the enclosure.

An optional Exhaust Chimney can further increase CRAC unit efficiency by directing hot air to the system return, completing the "loop". In essence, this "localizes containment" at the enclosure level. The use of these optional accessories helps the enclosure to do everything it can to maximize the existing conditions within a given data center, without adding any additional, outside cooling.

This High Cooling Solution would be targeted at the delivery of 10 kW, based on the various options, accessories and techniques employed, as well as the conditions and efficiency of the computer room air conditioning system employed in.

Additional cooling solutions can be made possible by options which utilize chilled water within the data center.

The first is the LiquiCool Rear Door Heat Exchanger (RDHx) manufactured by Coolcentric (20 kW
nominal load).

This after-market product uses liquid cooling technology to provide a solution without the use of any fans. Coolcentric™ recently approached Great Lakes Case & Cabinet Co., Inc. expressing a desire to be able to offer a “Great Lakes” solution as part of its product portfolio. Great Lakes has worked with Coolcentric™ and today, the Coolcentric™ RD18WXS-07 includes a rear door heat exchanger and an adapter frame
which is designed to fit the Great Lakes GL840ES-3042 enclosure. If a chilled water supply is readily available, the LiquiCool door can be easily installed on a “working” enclosure already deployed as an “on-site upgrade”.

With no fans or moving parts and weighing only 60 pounds, this solution adds only 5.6 inches to the depth of the GL840ES-3042 enclosure. The Coolcentric™ LiquiCool door holds 1.5 gallons of cooled water and without major adjustment to existing cabinet deployment, it allows for an easy addition to offset the heat generated by a high density environment. Quick-connect couplings allow for fast and easy installation.

If a CDU is required, the Coolcentric™ Coolant Distribution Unit can support 10-12 LiquiCool doors.

The Coolcentric™ solution offers a maximum cooling performance of 30 kW with nominal load estimated at 20 kW and redundant cooling at 15 kW.
The second is a complete Closed-Loop Water-Cooled Enclosure (CLWCE).

1. Chilled water passes through a coolant distribution unit (CDU) and enters the heat exchanger.
2. Conditioned air at consistent pressure is directed through a plenum chamber.
3. Conditioned air passes through rack mounted equipment.
4. Quiet (65 dB) high efficiency variable speed exhaust fans remove hot air.
5. Hot air passes across the heat exchanger.
6. Water then leaves the heat exchanger coil to begin a return trip to the chiller.

This enclosure design is specifically designed to provide maximum, state-of-the-art CLWCE_Case_Studydata center cooling. Great Lakes offers a fully-configured enclosure (CLWCE) or a kit toconvert any 42" or deeper ES Series enclosure from an air cooled unit to a water-based, liquid cooled unit. This allows the data center manager ultimate flexibility to upgrade tohigh density at any time.

The CLWCE is a 38 rack mount unit, 19" EIA enclosure with an integrated closed loop cooling system. The CLWCE cooling system uses low pressure chilled water to remove the heat generated by the servers.

The CLWCE/kit includes:
An 8 RMU heat exchanger, developed in conjunction with Lytron Inc., an American company with over 50 years of experience in developing liquid cooling systems. A custom control unit to manage and monitor the system 2 doors, fans in the rear door and a plenum in the front door.

Maximizing “up time” and fault tolerance has been considered in all aspects of this liquid cooling system:
•The cabinet contains N+1 fans.
•A fan can be replaced while the system is running.
•If the temperature in the cabinet exceeds a user-defined threshold, the doors will automatically open, the fans will shut down, an alarm will be sent, and the system will use room air to cool until the problem is resolved.
• Using a Coolant Distribution Unit (CDU) with redundant pumps will ensure the coolant is delivered at a consistent temperature and consistent flow rate.
• The CDU is typically set to a temperature above the dew point so the risk of condensation is eliminated.
• A liquid manifold is available.
• The enclosure (and Lytron’s CDU) can accommodate redundant power sources and have leak detection systems.

Cool air is delivered to the front of the cabinet. This air flows through the servers picking up heat, using the same concept as an open air cooled cabinet. However instead of flowing out the back of the enclosure into the hot aisle, three fans located in the backdoor direct the hot air down to the bottom of the cabinet where it passes through a heat exchanger. In the heat exchanger, heat is transferred from the air to the coolant flowing through the heat exchanger. The temperature of air exiting the heat exchanger has been reduced and the air is now ready to begin the path again.

A typical liquid cooling configuration would be a cluster of five enclosures, supported by a single CDU, such as Lytron’s LCS50. Lytron™ offers proprietary, interactive software which can help determine your data center’s liquid cooling needs. Talk to your Great Lakes representative or call 1-866-TRY-GLCC (879-4522) for more information.

When working within a defined space which can not be structurally altered, containment becomes a viable avenue to the future growth of a mature data center.

One of the most challenging aspects of emerging technology is the inability to predict how that technology will grow, evolve and adapt to meet changing data center conditions. Many of today’s data centers are facing tremendous challenges in power and cooling which can not be met simply by expanding the current infrastructure or simply adding additional CRAC units.

Today’s data center manager must often find new ways to grow the facility in its existing “footprint,” adding server density within existing enclosures, while using a “containment” strategy to capture as much conditioned air as possible or to isolate and exhaust as much hot air as possible within the data center space.

For more information on Aisle Containment Doors click here

Containment Configurations

Great Lakes has taken several approaches in support of this need.

One approach is the development of products which can close off the aisle via sliding or hinged doors, which attach easily to the existing enclosures. Our engineers will listen to your needs and will develop an economical approach to meet them, providing a highly affordable and yet custom solution.

For those situations which require the installation of containment curtains mounted above the enclosures themselves, we have developed a strategic alliance with Polargy, Inc., for the installation of the company’s line of Polar Plex™ containment systems which consist of structural aluminum framing and either vinyl curtains or thermoplastic panels, to create the desired environmental conditions.

PolarPlex Containment Panels -
Across Aisle

PolarPlex Containment Panes -
Above Rack

PolarPlex Containment Curtains -
Hung from Ceiling







The goal of Future-Proofing via the Great Lakes ES Series enclosure is very easy; however, to have the best opportunities to easily "upgrade" the enclosure, you do have to include some prior planning.

We have designed the air manager, the Lake Effect blower and the CLWC heat exchanger to occupy the bottom area of the enclsoure. If the cabinet is to progress from low to high density in its lifetime, we suggest that you use filler panels to block the bottom 8 RMU of the enclosure. In this approach, the cooling options available may be easily employed and upgraded without ever taking the enclosure out of service!

As the arises, you can improve the cooling and exhaust capabilities of the ES from the air manager and chimney, all from a single enclosure platform! It's simple and it's rocket science, both at the same time. We're talking about one enclosure platform with a lifespan beyond that of the data center itself!

Shown is a cluster of twenty GL840ES-2442 enclosures with adjustable chimneys to accomodate
varying ceiling heights in this section of teh data center space. These enclosures are located in the
H5 Colocation Center in Dallas, Texas. the H5 Colocation Center is a purpose-built facility
for data center/colocation, disaster recovery, and flexible lab/office space.


Whether you need 20 enclosures for your existing space, or 2,000 enclsoures for a new data center, Great Lakes Case & Cabinet Co., Inc. has the expertise, experience and world class customer service to meet your needs, on-time and on-budget.

©2016 Great Lakes Case & Cabinet • 1.866.TRY.GLCC (879.4522)