Posts

Exploring Evaporative Cooling

Evaporation and condensation are integral processes of our lives. The very example of these processes resides in our body – perspiration. When the outer weather gets too hot, our body secretes water – sweat – to cool off the body. This sweat evaporates because of the hot weather, and this evaporation causes a cooling effect. The heat and the humidity in the atmosphere control how quickly you feel cooler; that’s why you feel hotter on a humid day than on a dry day.
This is exactly the principle used in Evaporative Cooling within a datacenter. The process of evaporative cooling has been used very commonly in homes for cooling during summers; the coolers are popularly known as swamp coolers. But it has recently entered the scene of datacenter cooling as an environment-friendly option, mainly because it doesn’t use a refrigerant for cooling. How does an evaporative cooler work?A datacenter consists of a lot of equipment which run continuously for a long time. That causes a lot of heat gene…

Warming up to In-Row Cooling

Cooling a Datacenter optimally is the hot topic in the industry, pun unintended. The challenge lies in cooling the datacenter without affecting the operating temperatures of the contained equipment. After going through various approaches like perimeter cooling and using general air conditioners, data centers have now adopted the in-row cooling technique.
Generally, the Computer Room Air Conditioner (CRAC) is built to cool the air within a building. But this approach has its limits. It works wonderfully for a small premise. But when it comes to an entire building, the CRAC has to fight against gravity to replace warm air with cold air. Imagine, having to lift many square feet of cold air to replace with hot air. That takes a lot of electric power, not to mention the additional risk of the mixing of cold air and hot air, which defeats the purpose of cooling. What is In-Row Cooling?In perimeter cooling or room-based cooling, there are cooling devices installed around the perimeter of the …