冷冻水储热罐是暖通空调设计中一种高效、经济的选择。显冷容量通常在低需求期生成和储存，可用于许多目的，例如在高峰需求期间降低能源成本，在断电期间备份冷却容量，以及在火灾事故期间灭火。不同温度下不同密度的水，以及浮力效应，可以在储罐中产生热分层，这对储罐的性能起着重要作用。根据水箱在设计温度下排放冷冻水所需的时间来判断设计成果。性能会受到许多设计参数的影响，这使得分析变得困难，因此是一个很好的研究对象。本文展示了全三维数值模拟和虚拟设计方法如何提供流场结构的更多细节和可视化，以改进设计。 主要目标是设计冷冻水储罐，以便在断电期间，在特定温度下为数据中心提供至少15分钟的冷冻水。对不同尺寸、不同槽位的八角形进出口扩压器进行了虚拟设计，研究了其对流量分布、温跃层形状、旋流效应和冷水输送时间的影响。然后，该成果被用于优化设计，并为改善储罐性能提供解决方案。引文:美国丹佛市ASHRAE会议论文

Chilled water thermal storage tanks are an efficient and economic option in HVAC design. The sensible cooling capacity, which is typicallygenerated and stored during lower demand periods, can serve many purposes such as reducing energy costs during peak demands, backing upcooling capacity during a power outage, and suppressing fire during a fire accident. The different density of water in varying temperatures, alongwith the buoyancy effect, can create thermal stratification in the tank, which plays an important role in the performance of the tank. The designachievement is judged by how long it takes the tank to discharge the chilled water at the design temperature. The performance can be affected bymany design parameters which make it difficult to analyze, and therefore is a good candidate for research. This paper shows how the full 3Dnumerical simulation and virtual design approach provide more detail and visualization of the flow field structure to improve the design. The maingoal was to design the chilled water storage tanks to provide at least fifteen minutes of chilled water at a specific temperature for a data centerduring a power outage. Different octagonal inlet and outlet diffusers with different sizes and locations of the slots in the diffusers were virtuallydesigned and their impacts on flow distribution, thermocline shape, swirl effect, and time amount of delivering cold water were investigated. Theoutcome was then used to optimize the design and provide solutions for improving the performance of the tank.