RACA Journal September 2023 | Page 28

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Feature
Choosing the right cooling technology : The panel emphasises the importance of choosing the appropriate cooling technology for each specific case . They acknowledge that there is no onesize-fits-all solution and stress the need to analyse requirements and goals before making a decision . Factors such as system efficiency , cost , and ease of implementation are taken into account when considering options like water cooling or air cooling . While water cooling may offer greater cooling capacity , it also requires a larger volume of cooler air . On the other hand , air cooling is more cost-effective but may result in quicker temperature increases within the data centre . Ultimately , the choice depends on the specific needs and circumstances of the data centre .
Trafo
The volume of equipment in large data centre server rooms creates considerable heat and require extensive cooling facilities leading to high levels of energy demand .
Maintenance and efficiency : The significant role of regular maintenance in ensuring optimal cooling system performance is emphasised . Proper maintenance not only contributes to the longevity of the system but also helps maintain efficiency . Neglecting maintenance can result in decreased efficiency , increased energy consumption , and potential system failures . Regular inspections , cleaning , and filter replacements are essential to avoid additional strain on the system and unnecessary energy wastage . The discussion underscores the need for competent individuals to carry out maintenance tasks to maximise efficiency and minimise operational issues .
© Eamonn Ryan / RACA Journal Trafo

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The growth of data centres has created special opportunities for the application of dry-type transformers .
Left to right : Jonker Bester , director : Spoormaker & Partners ; Matteo Faccia , product management director & tech dep operation coordinator , HiRef ; David Bourke , director of sales : data centre technologies EMEA , Munters ; Vincent Laidet , managing director : Systemair .
RACA Journal I September 2023
Configuring cooling units : The panel addresses the importance of appropriately sizing and configuring cooling units within the data centre . Factors such as the position of the cooling unit , duct sizing and configuration , and external static pressure influence the energy consumption and efficiency of the system . Placing the cooling unit closer to the centre reduces energy consumption , while the sizing and configuration of ducts affect the external static pressure required for optimal performance . Regular maintenance of filters and ensuring proper airflow also play a role in maintaining efficiency and minimising energy waste .
Sensitivity ratio and energy optimisation : The significance of the sensitivity ratio in energy optimisation efforts was highlighted . Aiming to achieve a sensitivity ratio close to 1 helps reduce wasted electricity and improve overall energy efficiency . This involves maintaining the right temperature and airflow conditions within the data centre . By considering factors like row design and temperature control , data centre operators can minimise energy wastage and achieve optimal cooling efficiency .
Understanding the factors that influence cooling solutions , such as system configuration , maintenance , and sensitivity ratio , allows data centre operators to make informed decisions and optimise energy consumption . By prioritising these considerations and adopting best practices , data centre operators can enhance cooling efficiency , improve equipment reliability , and reduce overall energy costs . www . refrigerationandaircon . co . za