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E L I T E C H A N N E L PA R T N E R simulation@rand.com | RandSIM.com | 888.483.0674 Advancements in CFD for Battery Energy Storage Systems The Challenge Fueled by an increasing desire for renewable energies, many Utilities are considering significantly increasing their investments in battery energy storage systems (BESS). Indeed, renewable energy sources tend to be erratic with peak production times not necessarily aligned with peak demands. This creates a logistical nightmare for the Utility which strives to supply its customers with a reliable and uninterrupted power source. This is where BESS shines, by storing renewable energy when supply exceeds demand, and restoring that energy to the grid when needed; the BESS provides the much-needed flexibility and resiliency to the grid. However, this large array of energy storage and delivery comes with significant challenges to the cooling and ventilation system design, and potentially significant costs of on-site modifications should the challenges not be addressed up front. Decision makers may see the risks—time, money, reputation—associated with system outages and costly cooling system rework as a barrier preventing them from participating in this expected record industry growth. The Solution Reduce Risks by Implementing Simulation Early in the Design Process Rand Simulation has the expertise to provide simulation-based guidance early in the design cycle, ensuring that designs work correctly the first time. Our team has 200+ combined years in the engineering simulation and design industry, and we have completed more than 4,000 CFD, FEA, and electromagnetics analysis projects. Our proven, collaborative approach means we will work with you from brainstorming through successful analysis, making sure the results meet your expectations. And our deep knowledge of the Utilities industry means that we will work efficiently because we speak your language, understand your challenges, and are aware of regulations you must follow. Our experts can help you dramatically reduce the chance of costly rework on built structures by testing a battery energy storage system design early in the process or when the system goes down, identifying possible performance issues, and adjusting the design to address those issues. Our analysis capabilities include: • Evaluating HVAC performance • Quantifying temperature uniformity in batteries • Ensuring temperature is within the range set by warranty • Resolving aging discrepancies between batteries • Solving end of life capacity problems "Rand SIM has supported many of our battery Storage efforts for some of the largest systems in the world. Their support has been crucial in guiding us down the right path to meet stringent manufacturer temperature requirements and tight power purchase agreement schedules. Their CFD experts continuously review our projects, create new analyses and support engineering..." —Tony SlatonBarker, PE VP Energy and Sustainability Coffman Engineers, Inc.

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