2013-10-15 12:31:58 - Thanks to Climaveneta HPAC inverter units, there is a strong improvement in Datacenter energy efficiency.
Currently in Italy, and more generally in Europe, new datacenter openings are rare, while restructuring and improvement of existing facilities are widespread. However, datacenter refurbishments are very delicate from the engineering point of view and require great system flexibility in order to fit the needs of replacing and positioning the equipment while simultaneously allowing the site to function properly.
On the other hand it is essential to remember that the air conditioning and fire protection systems are vital to a datacenter. In particular HPAC system malfunctioning can lead to an equipment block, causing telephone and data flow disruptions not only locally but nationally as well. Relying on a competent and trustworthy partner, capable of making know-how and expertise available for the
operator and their sites, makes it an easy choice for the customer.
“After a careful analysis of technological proposals and thorough knowledge of the Company sales and after sales network, we have chosen Climaveneta HPAC solution for the two sites under refurbishment ” says Vodafone Core Infrastructure & Energy Technical Coordinator, who adds “it has been our first collaboration with Climaveneta, and we have been impressed by their competence and prompt response when offering us support.”
Vodafone is now undertaking the refurbishment, with the consequent energy performance upgrade of two important MSCs, one situated in Southern Italy and the second one in the North-East. For both of them the plant designers have chosen Climaveneta’s energy efficient solutions, despite their utilizing very different approaches. In the first case they have selected a hydronic system that grants the highest energy efficiency and reliability and the minimum environmental impact, whereas for the second one they have chosen direct expansion inverter units, the only ones able to guarantee energy efficiency at partial loads, which represent more than 75% of a datacenter work time.
By detailing the technical choices made for the site located in Northern Italy there are 6 chilled water 60 kw/each HPAC units combined with two chillers and a dry cooler. On the contrary, for the southern site the designer has selected 13 close control units, 3 of them are redundant, for a total cooling capacity of 400kW.
The server room is cooled by 8 units all equipped with inverter compressors and divided into 4 under air delivery and 4 front air delivery units. In addition there are also 5 under air supply units with direct Free-Cooling plenum, installed in a technical corridor and ducted.
Each free-cooling unit verifies the difference between internal and external temperature and if the delta is greater than 5°C and the external air temperature is between 7°C and 20°C, it activates the free-cooling mode. All the units are linked in a network and have an interface to the Mod-bus system. The integration of inverter technology with direct free-cooling plenum truly represents the most advanced and efficient solution now available on the market. When the free-cooling mode is not enough, the inverter technology activates itself, modulating the cooling capacity to dynamically balance the total heating load.
The keyword for the design of both sites has been flexibility. Since during the refurbishment of an existing datacenter the system can’t be switched off due to work in progress and instead must remain functional, it was essential to find a solution that allowed servers uptime even during the processing phases. “Climaveneta demonstrates a great flexibility both in designing and delivering units, adapting them to the real MSC needs” says the Southern Italy site designer.