EXAMPLE OF A HOT AISLECOLD AISLE CONFIGURATION

Hot aisle computer room setup

Hot aisle computer room setup

The hot aisle /cold aisle data center layout was originated by IBM in 1992 and it is one of the oldest ways to save energy in the data center. By isolating hot exhaust air emitted from server racks, HAC ensures that this hot air returns directly to the computer room air conditioning (CRAC) by funnelling it. An aisle containment system is a simple way to improve cooling efficiency in hot aisle/cold aisle rack configurations. At Profile IT Solutions, we specialize in designing and implementing custom aisle containment solutions for data centers and server rooms.

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Cold Aisle and Hot Aisle in Computer Rooms

Cold Aisle and Hot Aisle in Computer Rooms

Cold Aisle: Rows of racks face each other, forming a corridor where cool air is directed. The hot aisle /cold aisle data center layout was originated by IBM in 1992 and it is one of the oldest ways to save energy in the data center. When implemented correctly, they improve efficiency, reduce energy consumption, extend equipment life, and enhance overall reliability. So we look to factors other than the economics of efficiency to evaluate the relative merits of the two. And like choosing between Marvel and DC, you must pick a side: Hot Aisle Containment (HAC) or Cold Aisle Containment (CAC). The system simply aligns server fronts (air intakes) toward a shared cold aisle, and backs (exhausts) toward a shared hot aisle.

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Construction Site Lighting Distribution Box Configuration

Construction Site Lighting Distribution Box Configuration

In this guide, we'll break down everything you need to know to install a distribution box correctly and confidently. Choose the right box based on environment (indoor/outdoor), load capacity, and durability. The distribution board configurator from Eaton is a multifaceted, web-based configuration tool for electrical distribution systems from residential construction to small commercial buildings. Providing construction sites with an efective, reliable and compliant 110V power and lighting scheme is an essential ingredient in improving site safety and productivity. Although installations are "only temporary", the potentially dangerous working environment necessitates that systems have a high.

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Inner diameter of optical fiber cable when laid in a figure-eight configuration

Inner diameter of optical fiber cable when laid in a figure-eight configuration

Minimize mechanical pressure on the outer sheath at crossing points: (armoured) cables crossing each other generate points of high pressure, so it is important when laying in figure 8 loops it is done in a correct way. The figure-eight configuration should be used to prevent kinking or twisting when the cable must be unreeled or backfed. Fiber optic cable should not be coiled in a continuous direction except for lengths of 100 ft (30 m) or less. For loose tube and ribbon cable, the bend radius is specified at 20 times the cable diameter during tension/installation conditions and 10 times during static conditions (check the data sheet).

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Example of power supply relay protection

Example of power supply relay protection

Protective relays work in conjunction with various electrical protection and control devices, such as Miniature Circuit Breakers (MCBs) and Molded Case Circuit Breakers (MCCBs), to maintain system stability and prevent damage during fault conditions. Protective relays and devices have been developed over 100 years ago to provide "last line" of defense for the electrical systems. They are intended to quickly identify a fault and isolate it so the balance of the system continue to run under normal conditions.

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