Thermal behaviour of a modular UPS in the Cold Corridor

The Minkels White paper 06, Thermal behaviour of a modular UPS in the Cold Corridor, is one in a series of White papers sharing valuable data centre knowledge on managerial and technical levels.

 

Minkels has recently launched a new modular UPS system, called Archimod, which is available in the range of 20-120 kVA. The Archimod UPS technology has existed for 10 years now and because of continuous improvement meets the industry latest efficiency rates. What's new is the fact that the UPS system is now housed in an air optimised rack to make sure battery conditions are positively influenced by the cold aisle temperature conditions. Besides mechanical integration, the air optimised rack perfectly fits with the Minkels Varicon-M range. The interior of the UPS can be shifted in the frame to be adopted in closed loop cooling solutions. The range and form factor of the modular UPS makes it an ideal building block for a modular and scalable data center design. UPS capacity can be expanded just when it is needed maximizing a high efficiency throughout its load range and supporting the principle of 'pay as you grow'. UPS's are widely used in the data center industry but are typically located in a technical room where an environmental temperature of around 25° exists. The IT-room however has a hot and cold aisle configuration with temperatures in the cold aisle typically ranging between 20-25°C and in the hot aisle reaching 35-42°C. The hot aisle temperatures are for a UPS, in particular the batteries, a harsh environment. Batteries show reduced performance when confronted with temperatures higher than 25°C. Therefore a critical review is conducted towards the thermal performance of the modular UPS system in its air optimised housing in a typical hot and cold aisle environment.

 

The thermal analyses of the UPS system is narrowed down to finding the optimal pressure difference between the cold and hot aisle such that the cold air surrounds the batteries instead of the hot air. Additionally the temperature effects during discharge and recharge are evaluated since that is a critical moment where the UPS must perform as expected. The tests have shown that the special air optimised rack, for the Minkels Archimod UPS, is able to deliver the cold aisle temperature to the batteries and isolate them from the hot aisle temperature. At a minimum pressure differential of 5 Pa, between the cold and hot aisle, the battery temperatures do not exceed the cold aisle temperature in stand-by operation. Examples are given showing how, in different cooling configurations, this situation can be achieved as well. Also during discharge and recharge the temperatures in and around the battery tray stay within the specifications of the manufacturer. It can be concluded that when using the new Minkels modular UPS in an IT-room, the reliability and performance is guaranteed. 

Cover Thermal behaviour of a modular UPS in the Cold Corridor
Logo Multinational Atos chooses Minkels Free Standing Cold Corridor Logo Minkels offers comtrance GmbH complete and modular solution Logo Modular data centre for European ‘trusted cloud’ Logo UK-based Datum Datacentres selects Minkels’ VED system for its cutting-edge, London area facility Logo NeoCenter Ouest places its trust in the Legrand Group for its data centre in Rochesur-sur-Yon Logo MatrixCube perfect for Van Marcke CO2-neutral warehouse Logo Service Express built and operates one of the most efficient data centers in the UK Logo Telecity acquisition helps Equinix EMEA expand into new markets in Europe Logo Crédit Agricole Bank chooses Minkels aisle containment Logo The Data Center Group opts for partner that thinks along with them Logo Universitair Ziekenhuis Brussel selects Minkels DX and H2O row-based cooling Logo Mobile fallback data center for healthcare organization LENTIS Logo Bulk Norway: building the world’s largest data centre campus on renewable energy Logo Istanbul airport: new airport, new infrastructure Logo Minkels provides an identical Equinix look-and-feel worldwide, also in Dubai Logo University in Wageningen chooses Minkels Logo How Taboola overcame PDU failure in their data center Logo Legrand is a key supplier for Move-IT Technology’s migration service Logo Maroc Telecom provides data storage to SMEs at Casablanca data center Logo Infrabel - A close partnership on the tracks Logo If you can’t stand the heat, call for Raritan! Logo ESI Group deploys HPC Center in Paris with Minkels and Legrand Logo Complete data centre solution for Infonet DC Estonia Logo French ministries move data centres to Paris skyscraper Logo Pioneer Vancis: a modern data centre for the past thirty years Logo Sustainable data centre for the Krimpenerwaard municipality Logo An interview with Michel Lanners, CIO of LU-CIX: “It’s more than just a product that has brought us together.” Logo German company 23media expands into Europe with dedicated hosting offering Logo High-density fibre & rack solution for Equinix France Logo Wolfsburg on the road to becoming a smart city Logo MainOne plans to expand its data centre business MDXi Logo World’s largest data centre campus on renewable energy Logo Plieger opts for IT continuity and optimum availability Logo IBAarau – renamed  Eniwa in 2018 -   upgrades data centre services Logo Minkels global rack supplier Hitachi Logo All IT Rooms uses Legrand Data Center Solutions in Heerlen NL Logo Sevel’s data center forms basis for daily production of 1,200 commercial vehicles Logo Strategic growth and collaboration with Interxion Logo From the ground to the Cloud with Interoute Logo New ultramodern, fully-equipped data center for the University of Groningen (RUG) Logo Connectivity that helps keep Bavarian citizens safe Logo Easy IT architecture rollout through Global Consistency Logo SenseLAN builds on Minkels Vertical Exhaust Duct Logo Dataplace provides more certainty in a 24/7 economy Logo EvoSwitch is well prepared for future growth Logo An interview with MainOne Logo Vodafone Netherlands chooses Interconnect and Minkels data centre infrastructure Logo Swisscom relies on Minkels high-density (cooling) racks and monitoring services Logo The data centre challenges of the Academic Medical Center (AMC) in Amsterdam Logo GB Muri modernises existing data centre and lowers fixed costs Logo Tieto is expanding the biggest commercial data centre in Finland Logo CEO Datacenter.com explains why Nexpand was the logical choice   Logo Freightliner & Comms Room Services implement Minkels