These devices replace previous air conditioning units to ensure that temperature, air distribution and humidity are monitored and maintained. Using a variety of techniques, the CRAC cools the air generated by the racks. This can involve dispersing the air through an elevated floor with the air rising through the perforated sections to form cold aisles. The result is that the cold air flows through the racks, picking up the heat as it goes, before exiting from the rear. The air moves from these hot aisles behind the racks and returns to the CRAC intakes positioned above the floor.
Portable Air Conditioner
In some instances, there may be a requirement for portable cooling. There are a wide range of portable air conditioning units, ideal for single room or multiple sites, which principally fall into three types:
Exhaust Tube Units: designed to disperse the heat via an exhaust tube.
Split Type Units: ideally suited for large capacity environments, such as server rooms or large offices.
Evaporative Coolers: ideal for comfort cooling where conventional air conditioners struggle.
Easy to use, these systems can be simply plugged in exactly where you want them. Fitting with Critical Power’s environmental stance, we ensure that any portable air conditioning units we supply are energy efficient, deliver reduced emissions and offer low running costs.
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Offering amazing flexibility in where you can deploy your data centre hardware, fresh air cooling uses clean air pulled in from the outside, via a fan. These systems remove the need for expensive cooling equipment and are suitable for small to medium businesses, or a large number of hardware deployments across labs and data centres. They also help to reduce hours of controlled air conditioning chilling, which obviously ultimately helps save on operational expenditures and lowers the overall power usage effectiveness (PUE). Key features include their ability to:
- Manage high temperatures and humidity levels - Even up to 45°C/113°F at a 29°C maximum dew point.
- Meet air quality standards - Uses clean outside air in both air-side and water-side environments.
- Facilitate deployment of chiller - less data centres to almost anywhere – Where there are relevant climate conditions.
- Be able to operate all year-round.
- Reduce operational costs.
- Lower IT environmental impact.
Using the very latest technology, in row cooling is purpose built and directly cools the racks. By separating the rack and the air conditioning unit, the data centre heat management is optimised, resulting in increased reliability and more design freedom in the layout of the data centre. Perfect for restricted spaces, or where there is an absence of a raised floor, or where there is fluctuating server rack loads; this approach can address challenging situations and work with existing server technology. Compact and suitable for a variety of racks from different manufacturers, it can also be easily adapted to modernise cooling systems in existing buildings, while being:
Adaptable: intelligent air flow system that self-adapts to changing conditions
- Suitable for small and medium data centres with either raised and non-raised floors, and rooms with low ceilings
- Works equally well in contained and open environments for either hot-aisle or cold-aisle capture
- Air, water, glycol and chilled water systems available
Flexible: four different cooling systems are available, each in a variety of sizes (up to 40KW) with indirect free cooling:
- A/AS-System – direct expansion
- GS-System – direct expansion and plate condenser
- GES-System – direct expansion with indirect free cooling
- CW-System – chilled water cooling
Precise: targeted cooling of high-density racks, the horizontal air conduction means the cold air takes the shortest route to reach the rack, Automatically balances the airflow and cooling capacity depending on need
Effective: delivers cooling close to the server heat source for efficient and effective data centre heat management
Variable: featuring adjustable speed EC plug fans and flexible capacity digital scroll compressors
Controllable: provides 24/7 precise environmental control for cooling, humidity control and air filtration, Ability to monitor and control all the components inside and outside the unit to improve performance and report rack temperatures, Independently controlled 5 speed fans to enable system to respond to differing air temperatures
Accessible: designed and built for ease of maintenance with access from the front or rear of unit
An essential component of any data centre or server room design is an effective fire suppression system. With the heat generated by data centres, plus potentially faulty equipment and damaged wiring all increasing the risk of fire, it is so important to minimise the damage a fire can cause. Whether for a room or a cabinet, the Pneumatically Actuated Fire Suppression Systems (PAFSS) detect the fire source and extinguish it early to minimise the damage of valuable assets and enable a quicker recovery of operations. Specifically designed to protect electrical equipment, Critical Power’s fire suppression approaches offer:
Self-contained pneumatic systems: require no external energy or power supply and are situated where the greatest fire risks are:
- Extinguish a fire automatically without human involvement.
- Rapid reaction to a situation: upon identifying flames or heat, the pressurised, linear detection tubing bursts and activates the cylinder valve to open and release the extinguishing agent.
- Customised methods: there are two ways of having a carefully designed fire suppression response depending on your particular environment:
This focuses on a larger room environment, where the suppression system will also require pressure relief venting:
Inert gas fire suppression to reduce oxygen: Using a combination of Argon / Nitrogen and sometimes a small element of CO2 this approach discharges its payload within 1-2 minutes and displaces the oxygen in the server room to reduce the O2 level to below 15% (but above 12% bearing in mind potential personnel in the room) and suppress the fire.
Chemical / Synthetic gas fire suppression: Operating on a cooling mechanism, these systems usually deliver their payload within 10 seconds and use less gas, so do not significantly reduce oxygen levels, however high doses of the synthetic or chemical agent can be toxic.
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A more focused in-cabinet fire approach, this quickly targets the fire directly to minimise threats to the business continuity:
Responsive detection and suppression: Concentrated on protecting high risk, high value equipment, this approach protects the cabinets from within using minimum extinguishing gas and can be moved with the rack. Easy to specify, install and maintain, this modular approach means the payload is released within the protected enclosure, where a fire can be detected early and directly treated. As it discharges a smaller amount of gas suppression, it also offers a more environmental solution.
Tailored to setting: as most server rooms and data centres are occupied, the fire suppression system must be suitable for clean air environments.
Extensive monitoring tools: these are recommended for any server room or data centre environment and include having a control panel, smoke detection system (in all voids i.e. room, ceiling and floor), audible alarms and warning signs.
Adherence to strict guidelines: fire suppression agents can be dangerous if not designed correctly, Critical Power therefore follow all the key, relevant standards.
When considering server room design and its cooling, there is much debate about the subject of a raised floor versus slab floor construction. Whereas traditionally nearly all data centres had raised floors, more recently these have become less the norm, however there is still a place for a raised floor design to improve cooling effectiveness depending on needs of the business. At Critical Power we believe a raised floor will offer:
Effective cooling: delivery of cooling air through perforated floor tiles.
Flexibility: ability to easily rearrange perforated tiles, should racks be moved.
Accessibility: accommodates potential future changes, such as being able to add cooling or electrical infrastructure beneath the floor to in-row cooling units or heat transfer direct to servers
Adaptable: offering future flexibility, particularly when in a multi-tenant facility
Keeping your server room online is one of the most crucial parts about a server room. With multiple ways to ensure that your server stays powered even during a major blackout. By introducing fail-safes into your server room you can essentially eliminate the worry about a power outage. As long as you keep your power systems maintained and checked regularly.
Uninterruptible Power Supplies (UPS)
UPS are a great solution that can provide runtime to all your servers and networking gear in server rooms. The can offer runtime from 5 - 10 minutes and can be extended up to 8+ hours depending on needs. A UPS also protects your systems from the 9 power issues that can harm your hardware.
There are a few different ways that you can run a UPS system these are all dependent on your needs and what level of protection you would like.
Capacity or "N": An N configuration can be looked at as the minimum requirement to provide protection for the critical load. Most “N” system configurations, especially under 100 kW, are placed in buildings with no particular concern for the configuration of the overall electrical systems in the building. In general, buildings’ electrical systems are designed with an “N” configuration, so an “N” UPS configuration requires nothing more than that to feed it.
Parallel redundant: Also refered to as N+1 this uses 2 UPS to allow for the failure of one. So if there is an issue or failure in one of the UPS it will pass over the load onto the other and will keep running as normal. When operating normally the UPS share the critical load evenly across them.
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Critical Power Supplies UPS’s is a vendor-neutral supplier of award-winning uninterruptible power supply systems from Eaton, APC, Vertiv, Riello and GE. Our solutions cater to applications which range from Datacentre, security, manufacturing to telecommunication.
Energy Efficient: efficiency of up to 99% in ESS mode.
Latest technology: Lithium-Ion and 15-20year design life batteries available with a wide range of runtimes.
Flexible: Modular solutions up to 400KW.
Range: Range of UPS Solutions from 400VA to 1.2MW, with options from rackmount to wall mount to floor standing.
Whether you need individual UPS solutions, Modular or site-wide solutions, contact us today to discuss your UPS application and arrange a free of charge site survey.
Our engineers will provide you with a non-biased solution based on your current, future and budget requirements. Taking into account how the power project can be delivered, installed and maintained to ensure your chosen solution lasts and provides a great return on investment.