Effects of outdoor air conditions on hybrid air conditioning based on task/ambient strategy with natural and mechanical ventilation in office buildings
Effects of outdoor air conditions on hybrid air conditioning based on task/ambient strategy with natural and mechanical ventilation in office buildings
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DOI：
10.1016/j.buildenv.2003.07.008
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发表时间：
2004-02-01
影响因子：
7.4
通讯作者：
Chikamoto, T
中科院分区：
文献类型：
--
作者：
Chang, HJ;Kato, S;Chikamoto, T
本研究旨在明确办公楼自然与机械混合空调系统在中间季节的效果和室内环境特征，并获得设计数据。自然与机械混合空调是利用自然通风和机械空调系统来改善室内热空气环境质量、降低能耗的空调系统。本报告首先对可用的自然通风条件进行了分类，并估算了模型建筑中可用的自然通风量。此外，基于任务环境空调的概念，将任务区域的平均温度控制在目标空调温度（26℃）后，利用三维计算流体动力学（CFD）分析，研究随着自然通风口尺寸的变化，室外温度/湿度和流入量以及室内环境和冷热量输入量的变化。研究结果表明，低于室内温度的自然通风通过负浮力有效覆盖了室内较低的任务区，实现了任务区的节能空调。 (C) 2003 Elsevier Ltd. 保留所有权利。
This research aims to clarify the effects and indoor environmental characteristics of natural and mechanical hybrid air-conditioning systems in office buildings during intermediate seasons and to obtain design data. Natural and mechanical hybrid air conditioning is an air-conditioning system that utilizes natural ventilation and mechanical air-conditioning systems to improve the quality of the indoor thermal and air environment, and to reduce energy consumption. This report first categorizes the available natural ventilation conditions and estimates the amount of natural ventilation available in a model building. Furthermore, based on the concept of task-ambient air conditioning, after controlling the average temperature in the task zone to a target air conditioning temperature (26degreesC), changes in the outdoor temperature/humidity and the inflow rate, and the indoor environment and amount of cool heat input were studied with changes in the size of the natural vent using three-dimensional Computational Fluid Dynamics (CFD) analysis. The results of these studies indicated that natural ventilation at temperatures lower than the indoor temperature effectively covered the lower indoor task zone through negative buoyancy, which enabled energy-saving air conditioning in the task zone. (C) 2003 Elsevier Ltd. All rights reserved.