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Fully mixed air model based cooling load estimation method for both stratum ventilation and displacement ventilation

机译：基于混合式空气模型的散载估计方法，用于划分通风和排量通风

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摘要

The non-uniform indoor thermal environments of stratum ventilation and displacement ventilation help to reduce the energy consumption, but challenges the cooling load estimation for the energy performance evaluation of air conditioning systems during the design and operation. Co-simulations coupling the building energy simulation and indoor thermal environment simulation are getting popular for the cooling load estimation of the non-uniform thermal environment for the research studies, but they are time-consuming and technologically complicated for practical applications. This study proposes a method to enable the fully mixed air model to accurately estimate the cooling load for both stratum ventilation and displacement ventilation. The main idea of the method is to determine a height of the stratum-ventilated/displacement-ventilated room at which the air temperature can be used as the input of the fully mixed air model to accurately estimate the cooling load of stratum ventilation/displacement ventilation. Experimentally validated multi-node models are employed to demonstrate the effectiveness of the method proposed. Since the fully mixed air model is readily available in existing building energy simulation tools, familiar to building energy engineers and computationally efficient, this study contributes to providing a computationally efficient and technologically convenient method to accurately calculate the cooling load of stratum ventilation and displacement ventilation for building energy engineers. (C) 2019 Elsevier B.V. All rights reserved.
机译：地层通风和位移通风的非均匀室内热环境有助于降低能量消耗，但挑战在设计和操作期间空调系统的能量性能评估的冷却负荷估计。共同仿真耦合建筑能量仿真和室内热环境模拟是对研究研究的不均匀热环境的冷却负荷估算变得流行，但它们对实际应用进行了耗时和技术。该研究提出了一种方法，使能完全混合的空气模型能够精确地估计地层通气和位移通风的冷却负荷。该方法的主要思想是确定地层通风/位移通风室的高度，其中空气温度可用作完全混合空气模型的输入，以准确估计地层通风/位移通风的冷却负荷。采用实验验证的多节点模型来证明所提出的方法的有效性。由于完全混合的空气模型在现有的建筑能量仿真工具中提供了熟悉的能源仿真工具，这项研究有助于提供计算高效且技术方便的方法，以准确计算地层通风和位移通风的冷却负荷建筑能源工程师。 （c）2019 Elsevier B.v.保留所有权利。

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