Boosting Computer Room Air Handler Performance: Airflow Management Tips by Kelvin
Modern computer rooms in offices have one thing in common – they produce a lot of heat. And as server density continues to increase, keeping that same heat under control becomes more challenging than ever. That’s where businesses consider adding a computer room air handler into their HVAC systems.
Sometimes, the issue isn’t cooling capacity at all. It’s just airflow. Your CRAH could be working around the clock but if cold air isn’t reaching the right equipment or hot air keeps mixing back into the system, you’re simply burning energy without getting the results you expect. You need proper airflow management.
In this blog, Kelvin Mech will tell you how to boost your computer room air handler performance. Our tips will help you reduce energy waste and keep your critical IT infrastructure running efficiently.
How Can You Manage Computer Room Air Handler Performance?
Here, we have prepared a list that will not just optimise your system but also help you save on additional equipment upgrades and electricity costs:
Separate hot and cold airflows using hot/cold aisle containment
Starting with the most common issue that many facilities overlook. Your computer room air handler can supply perfectly chilled air. But what if hot exhaust air mixes with it? Cooling efficiency will drop almost instantly. It’s like trying to cool your room with windows wide open.
Hot and cold aisle containment prevents this mixing. It ensures cold air reaches server intakes and hot air is directed back for cooling. Result? Better CRAH performance. There will be lower energy consumption and fewer hotspots throughout the data centre.
Seal cable openings and raised floor gaps
Those tiny gaps beneath the raised floor… They don’t look like much, no? But together they can waste a surprising amount of conditioned air. Instead of reaching server racks, cool air will escape through these cable openings and unused floor penetrations.
Meaning, the computer room air handler of your HVAC has to work harder just to maintain the same temperature. Our next advice is to seal these leaks. That way, you can:
– Improve airflow direction
– Reduce pressure loss
– Deliver cooling exactly where your IT equipment needs it
Optimise perforated floor tile placement
Not every server rack requires the same amount of cooling. But still, we’ve seen many facilities installing perforated tiles without much planning. Result? Some racks receive more cold air than required. Others struggle with inadequate airflow. Rather than guessing, place perforated tiles only where cooling demand is highest.
It’s this proper placement that guarantees balanced airflow across the server room. There will be less wasted cooling capacity. Your computer room air handler will operate far more efficiently.
Eliminate air bypass and recirculation
Think about pouring water into a bucket. But there’s a twist! It’s full of holes. No matter how much you add, much of it goes to waste. Air bypass works in the same manner. Conditioned air reaches areas where it isn’t needed while hot air finds its way back to server intakes.
This forces the CRAH system in your HVAC to compensate continuously. Identify and eliminate bypass and recirculation paths. This will significantly improve cooling effectiveness, that too without increasing energy usage.
Install blanking panels in empty rack spaces
You must be thinking, “They are just empty rack spaces. What could go wrong?” Yes, they may seem harmless but they create easy pathways for hot air to move towards the front of your servers. They disrupt airflow patterns and raise inlet temperatures. Making cooling far less effective.
Installing blanking panels is a simple, low-cost solution. Using them, you can block unwanted airflow inside the rack. It’s one of those SMALL improvements that gives you surprisingly BIG results by helping your computer room air handler system cool equipment in a much more efficient way.
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Balance airflow across all CRAH units
Adding more airflow doesn’t always solve the problem. In fact, it can sometimes make things worse. If one CRAH unit pushes significantly more air, certain areas become overcooked. Others develop hotspots. The goal here isn’t maximum airflow but a balanced one!
By properly balancing every computer room air handler within your HVAC system, you can:
– Create a more consistent cooling environment
– Reduce unwanted energy consumption
– Ensure every rack receives the much-needed conditioned air
Continuously monitor temperature and airflow
Here’s the thing. You can’t fix what you can’t see. Hotspots and airflow imbalances often develop gradually. Yes, long before they trigger alarms. That’s why continuous monitoring is so valuable. Install temperature and airflow sensors throughout the server room. These will help you collect real-time data.
Using the insights, you can:
– Identify inefficiencies early
– Optimise CRAH performance
– Prevent minor cooling issues from turning into expensive ones
– Tackle unexpected downtimes
Keep air filters and cooling coils clean
Using dirty filters within your HVAC is not good. You are basically asking your computer room air handler to breathe through a blocked mask. Airflow becomes restricted. Cooling efficiency drops. The whole unit works harder than necessary. The same applies to clogged cooling coils.
Dust and debris reduce heat transfer. Forcing your system to consume more energy. Regular cleaning may seem like a small maintenance task but it plays a major role in:
– Maintaining airflow
– Lowering operating costs
– Extending equipment life
Review rack layout and equipment placement
Not all servers generate the same amount of heat. Some high-density racks produce comparatively a lot more heat than others. Imagine them placed randomly across the data centre. You will end up overloading certain cooling zones while leaving others underutilised.
Our last advice is to review your rack layout carefully. Also, distribute heat loads strategically. A well-planned equipment arrangement will help airflow move naturally through the room. You can reduce cooling pressure on CRAH units. Creating a better and stable operating environment.
Hire Kelvin Mech For Regular CRAH Performance Maintenance
Businesses inspect their computer room air-handling systems only after a problem arises. Sadly, by then, efficiency has often been declining for months. We know you are busy and have a lot on your plate. That’s why you need to hire experts who can do regular performance assessments and maintenance on your behalf.
Kelvin has been helping businesses with optimising their computer room air-handling systems for HVAC for 10+ years now. Airflow restrictions, calibration issues, worn components, cooling inefficiencies – our engineers will identify and fix them all!
Our routine inspections, airflow balancing strategies, and preventative maintenance will keep your CRAH operating at its peak performance all the time. So what are you waiting for? Contact us at +91 8108555060 or +91 7045509909.
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