The ideal recommendation is a separate room for battery installation, taking into account the following points The ventilation requirement for the load can be calculated in accordance with the British Standard guidelines listed below as well as the HSE INDG 139 guidelines. In the event that the UPS manufacturer does not specify the need for air conditioning, sufficient care should be taken to install intake fans to bring in fresh air from outside the UPS room and exhaust fans to exhaust hot air from the UPS room. Fans must have the necessary PBC to ensure the required air exchange and must have filters to limit dust in the UPS room. Leak containment issues: Spill containment should be planned to adequately mitigate potential acid leaks from ruptured or leaking batteries. Sufficient quantities of absorbent materials and acid neutralizers must be kept in the room for containment and clean-up of spills. If you don`t already have one, consider a “spill kit.” From the above formula, one can deduce the number of air exchanges required to reach the capacity of the fans necessary to evacuate heat from the UPS space and maintain an ambient temperature below 40°C. The number of air changes can be calculated from the following formula: Letting cold air in and out is a reasonable principle, but a rudimentary ventilation system will never cool the parts of the data center infrastructure that need it most. Letting the outdoors into your uninterruptible feeding room also poses a number of environmental and safety risks that can have catastrophic consequences. A chimney can let in cold air, but also dirt, insects or birds, and there is a very real risk of condensation accumulating. This is one of the reasons why water is used as a means of heat exchange for free cooling systems in data center environments. The feasibility of free cooling depends on the ambient temperature low enough to provide an additional and additional benefit to conventional cooling operation. SMF VRLA batteries are designed for an operating temperature of 25-27°C, it is important to ensure that this with the right size of air conditioner to maintain the temperature in the battery room. When considering the location of your room, you need to evaluate where the office is powered and which devices the UPS protects.
Carter Sullivan`s free site survey will explore the challenges of UPS facilities and offer advice on the right location and approach. The two ventilation requirements are not a “one or the other” option. This contradicts the requirements of NFPA 1. Problems with the fire department: Battery rooms should be isolated from each other in separate fire chambers and other equipment and personnel areas by a fire wall with a two-hour fire wall. The UPS generates heat that must be evacuated to prevent the temperature of the UPS from reaching an unacceptable level. Choosing the air conditioner for the inverter room requires an understanding of the amount of heat generated by the inverter. Heat is energy and is usually expressed in joules, BTUs, tons, or calories. Common measurements for appliance heating power are BTUs per hour, tons per day and joules per second (joules per second equals watts) Your UPS should be placed in a safe and accessible place. In this article, we`ll explore the basics of UPS room layout and what to consider when deciding where to place your critical power protection systems. NFPA 1 is not adopted by municipalities as often as IFC. Although the essential requirements of NFPA 1 are generally the same as those of the IFC, the technical regulations of NFPA 1 have important differences that may affect the design of the corresponding battery ventilation systems. These requirements are as follows: the heat loss of the battery under normal float conditions is too low, the air conditioning system must be sized according to the ambient surface, latent heat and required air exchange.
Ceiling problems: Preferably, the battery room ceiling should be flat to ensure that the release of hydrogen gas cannot be trapped in pockets. Problems with fire detection and extinguishing systems: Individual battery rooms should be treated as separate areas for fire detection and extinguishing purposes. The first thing you need to know about free cooling is that it uses a free element – the outside air. The most direct way to use this air to cool your UPS room is to install vents or windows that you can open in cold weather. Thus, the principle of free cooling was born, but current UPS solutions for free cooling are much more sophisticated and energy efficient. Planning a UPS room requires a detailed understanding of the hazards associated with installing, operating, and maintaining critical UPS systems. At Carter Sullivan, we offer all our customers a free location survey to assess the suitability and suitability of your proposed UPS room. We look at the location of the room, its size, the structure of the building and the protective measures you have taken. This information, along with information about your growth plans, helps us design the right UPS system for you.
At Carter Sullivan, we are experts in the design, installation and maintenance of UPS systems. Our free site survey process breaks down the complex challenges of UPS room design into simple and clear steps. Our technical team will work with you and study your needs and the current situation to offer you a safe and efficient UPS system. While the data centers I was responsible for hired consultants and companies to help design, build, and maintain our UPS systems and battery rooms, knowing and understanding the right design and maintenance issues was critical to ensuring the systems met expectations and supported installation during all power outages. For large industrial UPS solutions, it may be worth considering a separate battery room so that the UPS batteries can be kept at the optimum temperature while the UPS room has higher temperature tolerances. One of the most important design requirements is ventilation. Hydrogen and oxygen, when discharged into the surrounding atmosphere (either by ventilation batteries or by a drain valve), can produce an explosive mixture when the hydrogen concentration exceeds the lower explosion limit (LEL) by 4% and up to the upper explosion limit (UEL) by 75%. The room should also be large enough to install all cables safely. During our free on-site survey, one of our qualified experts will assess the office and location of your UPS and ensure it is safe to use, maintain and repair. Whether you`re looking for a UPS to power your data center or protect your important communication space, we`re here to help. In the eyes of life safety regulations, the value of a building`s contents never exceeds the safety of the public. However, when uninterruptible power supply (UPS) systems are specified for data centers, availability requirements are often paramount and this guiding principle is lost.
Battery room ventilation is a critical point for system safety. If there is no adequate ventilation, a build-up of hydrogen gas in the battery room can cause a fire in the plant. Temperature Control Issues: For optimal battery performance, the battery room temperature should be kept constant at 77°F. Temperatures below 77°F increase battery life, but decrease performance during heavy discharges. At ambient temperatures above 77°F, battery performance increases, but battery life decreases. For flooded lead-acid, Ni-Cd and VRLA batteries, rooms and cabinets must be ventilated in accordance with the International Mechanical Code and one of the following regulations: Battery room EPO Systems Problems: Battery rooms must be equipped with an emergency shutdown system (EPO) that can disconnect the room`s power supply from regular UPS battery buses or individual UPS modules. There are many different rules, regulations, and standards that affect UPS system batteries. Some deal with the battery, while others deal with the associated part or equipment. When in doubt, always consult an expert. But always act first and approach the backup battery for what it is, an important but potentially dangerous part of a critical installation. UPS rooms must have a clean, well-ventilated environment and be kept at a constant temperature. Designed to maximize space utilization, with the UPS located in a convenient and accessible location in your building.
Your inverter contains a number of VRLA or lithium-ion batteries, which require maintenance and servicing to be performed. The batteries in your inverter are exposed to environmental hazards, including water damage and temperature fluctuations. UPS batteries themselves can be dangerous, and there is always the possibility of unauthorized personnel interfering with the system. Two main fire regulations (International Fire Code (IFC) and NFPA 1: Fire Code) define the appropriate design and supporting infrastructure to be provided for battery storage rooms. These requirements are often overlooked because they are covered by codes that are not regularly reviewed by electrical and mechanical engineers. It should be noted that new UPS battery technologies such as lithium-ion (Li-ion) are also included. The height of the ventilation air flow should preferably be ensured by natural ventilation, otherwise by forced (artificial) ventilation.