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An integrated model for the design of air-cooled chiller plants for commercial buildings

机译：商业建筑风冷式制冷机设计的集成模型

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摘要

Cooling load calculation is the first step in designing the air-conditioning system of a building. The calcu-lated cooling capacity with appropriate buffer is then used to select the number and size of chillers in the system. N +1 is a common formula used by designers to size the chiller plants in Hong Kong buildings, where N is the actual number of chillers required and 1 is a redundant chiller provided to ensure reliability. This paper reviews the problem of excess capacity and discusses the risk exposure of chiller systems without redundant chillers. The cooling load profiles of the chiller plants of four medium-sized commercial buildings in Hong Kong are reviewed. The risk exposure of chiller systems without redundant chillers can be minimized by applying risk-based preventive maintenance. The just-in-demand design reduces capital cost of the building and frees up funds for continuous energy measurement and improving the energy efficiency of chiller plant systems. This paper presents a model for designing chiller plants that improves the energy efficiency of the plant in a cost effective and thoughtful manner. It is designed with consideration of the life cycle of the plant and real-time continuous commissioning, monitoring, measurement, comparison and execution for better energy management.
机译：计算冷负荷是设计建筑物空调系统的第一步。然后使用带有适当缓冲的计算冷却能力来选择系统中冷却器的数量和大小。 N +1是设计人员用来确定香港建筑物中冷水机组规模的通用公式，其中N是所需的冷水机组的实际数量，而1是为确保可靠性而提供的冗余冷水机组。本文回顾了产能过剩的问题，并讨论了没有冗余冷水机组的冷水机组系统面临的风险。检讨了香港四座中型商业建筑物冷水机组的冷负荷曲线。通过应用基于风险的预防性维护，可以将没有冗余冷水机组的冷水机组系统的风险暴露降至最低。按需设计减少了建筑物的资本成本，并腾出了资金来进行连续的能源测量并提高了冷水机组系统的能源效率。本文提出了一种用于设计冷水机组的模型，该模型以经济有效且周到的方式提高了电厂的能源效率。它的设计考虑了工厂的生命周期以及实时连续调试，监视，测量，比较和执行，以实现更好的能源管理。

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