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Influence of asynchronous demand behavior on overcooling in multiple zone AC systems

机译：异步需求行为对多区域交流系统中过冷的影响

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摘要

The cooling demands of different zones in an air conditioning (AC) system are different (with large discrepancies) even at the same moment, and the degree of variance changes with time. This asynchronous behavior of demand greatly influences the overcooling degree in multiple zone AC systems. This paper describes the asynchronous demand quantitatively and reveals its relationship with the overcooling degree in a multiple zone AC system. The Lorenz curve and Gini index are introduced in this study and used to describe the demand characteristics. Two typical multiple zone AC systems, namely, constant air volume (CAV) and variable air volume (VAV) systems, are considered as examples, and their overcooling degree under different demand profiles are analyzed. Under different asynchronous demands, the overcooling degree in the CAV system changes from 1 to 3.5, while that in the VAV system changes from 1 to 1.5. In this paper, the influence of the regulation ability of the AC system on energy consumption is also discussed. This paper presents a new perspective to study the demand pattern and explores the method to reduce the overcooling phenomenon in multiple zone AC systems. (C) 2016 Elsevier Ltd. All rights reserved.
机译：即使在同一时刻，空调（AC）系统中不同区域的制冷需求也不同（差异较大），并且变化程度随时间而变化。需求的这种异步行为极大地影响了多区域交流系统中的过冷度。本文定量描述了异步需求，并揭示了其与多区域交流系统中过冷度的关系。本研究介绍了洛伦兹曲线和基尼系数，并用来描述需求特征。以两个典型的多区域交流系统为例，分别为恒定风量（CAV）和可变风量（VAV）系统，并分析了它们在不同需求曲线下的过冷度。在不同的异步需求下，CAV系统的过冷度从1变为3.5，而VAV系统的过冷度从1变为1.5。本文还讨论了交流系统的调节能力对能耗的影响。本文为研究需求模式提供了一个新的视角，并探讨了减少多区域交流系统中过冷现象的方法。 （C）2016 Elsevier Ltd.保留所有权利。

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