By Mark Roberts on 17-Aug-2017 11:30:00
Expanding a small-scale, air-cooled IT hardware environment to create a multi-enclosure facility often calls for a new cooling strategy. The first and most fundamental question is whether water-based or refrigerant-based cooling is more appropriate. It also makes sense to understand the total cost of ownership – including both capital expenditure and ongoing operating costs.
Direct expansion (DX) solutions for cooling IT equipment are the quickest and easiest solutions to implement and require less capital expenditure than water-based ones. DX solutions employ conventional refrigerant-based cooling with a split system and a compressor. Cooling is via a closed-loop refrigeration cycle, featuring an evaporator, a compressor, a condenser and an expansion valve.
Rittal’s LCU DX (Liquid Cooling Unit) offers enclosure-based cooling with DX units mounted inside 800 wide IT racks. They are available with up to 6.5 kW output in both single and dual