As the rise of AI fuels a rapid growth in data centres, efficient cooling and airflow management systems are more important than ever before. In this article, we take a look at data centre design, the importance of effective cooling techniques and the part that pvc strip curtains play in reducing energy consumption and keeping organisations running smoothly.

What is a data centre?

A data centre is a physical facility that houses IT infrastructure used to store, process, manage and distribute large amounts of digital information. These hubs enable organisations to host websites and applications, run cloud computing services, manage internal systems and support streaming and banking services, as well as AI and machine learning. Data centres are also crucial for data backup and recovery.

In essence, data centres form a critical part of the digital infrastructure of the modern world. Without them, our ability to make online transactions, secure sensitive data, stream content and communicate on social media would all be severely compromised.

Interior of a modern data centre with rows of illuminated server racks on both sides, glowing blue lights and a reflective tiled floor under a grid-patterned ceiling.

How are data centres designed?

Data centres contain many key components that work together, including:

  • Servers - computers or devices on a network that provides data, programs or services to other computers
  • Networking equipment - required to connect devices on a network, such as routers and switches
  • Storage systems - used to store retrieve and back up data, including Hard Disk Drives (HDDs) and Solid-State Drives (SSDs)
  • Security systems - used to protect data physically (such as locks and cameras) and digitally (such as firewalls, encryption and physical locks)
  • Cooling systems - used to maintain optimal operating temperatures, including PVC strip curtains and computer room air conditioner (CRAC) units
  • Backup generators - vital for continuous operations in the event of power outages.

Data centres are carefully designed to make the most of the available space while maximising efficiency, accessibility and equipment performance. Data centres are usually divided into separate areas for power distribution, storage systems, and networking equipment. This organised approach is designed to improve operational efficiency, make troubleshooting easier and ensure proper airflow management throughout the facility.

The role of airflow management and temperature control

Temperature control is a vital consideration in data centre design. Optimal temperature maintenance is crucial for preventing equipment overheating, which can lead to fires and critical failures.

One of the most important aspects of temperature control in data centres is airflow management. Airflow management is the strategic control of the movement of cold air (for cooling equipment) and hot air (that comes out of the equipment). Good airflow control can not only help to avoid disasters but it can also maximise the lifespan of hardware and reduce energy consumption.

How much energy do data centres use?

An average data centre consumes as much electricity as 16,000 to 32,000 UK homes, based on a typical power demand of 5 to 10 megawatts (MW), according to the International Energy Agency (IEA). Large hyperscale data centers, on the other hand, demand 100 MW or more in power, resulting in annual electricity consumption comparable to that of approximately 350,000 to 400,000 electric vehicles. And demand is only accelerating.

In fact, data centres accounted for 1.5% of the global electricity consumption in 2024 - around 415 terawatt-hours (TWh). However, the IEA expects this figure to more than double by 2030 to 945 TWh, or roughly 3% of the world’s total electricity use, in part due to the rise of AI.

How are data centres cooled?

Organisations use a variety of methods to cool data centres, including:

  • Hot and cold aisle containment - Typically, server racks, which house servers and networking equipment, are arranged in alternating rows with cold air intakes facing one way while hot air exhausts facing the opposite direction to create hot and cold aisles. The rows usually feature dedicated walkways that allow clear access for cabling, maintenance and repairs.
  • Computer Room Air Conditioners (CRAC) units - These systems use a refrigeration cycle to cool air. The air is blown over a cooling coil filled with refrigerant before being circulated into the data centre to maintain optimal temperatures.
  • Computer Room Air Handlers (CRAH) units - These specialised devices cool the air in data centres by drawing in warm air and passing it through a cooling coil filled with chilled water.

Physical barriers - Physical barriers, such as PVC strip curtain kits, can also be used to better contain hot and cold aisles, enhancing cooling efficiency. They work by minimising air leaks and preventing air from hot and cool aisles from mixing together. This can lead to lower overall cooling costs and a reduced risk of equipment failure

Why are PVC curtain strips important for data centres?

PVC curtain strips perform a number of important functions in data centre environments. They’re also easy to maintain, durable and offer a cost-effective solution compared to more complex airflow management systems, making them a practical choice for most facilities.

Improve airflow and energy efficiency

At Rayflex, our PVC strip curtains are engineered to improve airflow in controlled environments, reducing energy use. They optimise the efficiency of cooling systems by isolating hot and cold aisles and carefully directing cold air to cool heat-generating equipment and containing and removing hot air. By creating different thermal zones, these curtains lower energy consumption and prevent overheating. These flame-resistant solutions are perfect for enclosed IT spaces with strict fire safety standards. Their anti-static properties also help lower the risk of electrostatic discharge.

Prevent contamination and reduce noise

In addition to regulating temperatures, PVC strip curtains help to protect sensitive electronic equipment from dust, debris and contaminants, such as airborne chemicals. This can help to prevent equipment from degrading and malfunctioning.

PVC strip curtains also play a role in creating safer working environments by absorbing sound and reducing noise levels. This can contribute to greater productivity and staff satisfaction.

For more information about PVC strip curtains for data centres, get in touch with our friendly and knowledgeable team.