Air

M. Barnett
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Abstract

delivers a platform to Abstract: This project was a simulation study of the energy performance of a prototype three-story office building configured for both conventional overhead (OH) air conditioning and underfloor air distribution (UFAD). Both the annual energy consumption and the peak demand were calculated using EnergyPlus v3.0 for the building in three California climate zones, Los Angeles, Sacramento and San Francisco. The sensitivity of the energy performance to the building configuration (e.g., window to wall area ratio, etc.) and other features of the building was studied. The main result of the study was that UFAD provides energy savings compared to OH in all three climate zones, both in terms of annual energy consumption and also in the reduction of peak demand HVAC annual energy reductions were greater in San Francisco but only marginally better than in the warmer climate zones of Los Angeles and Sacramento. A second major outcome of this study was improvements to the UFAD Abstract This project was a simulation study of the energy performance of a prototype three-story office building configured for both conventional overhead (OH) air conditioning and underfloor air distribution (UFAD). Both the annual energy consumption and the peak demand were calculated using EnergyPlus v3.0 for the building in three California climate zones, Los Angeles, Sacramento and San Francisco. The sensitivity of the energy performance to the building configuration (e.g., window to wall area ratio, etc.) and other features of the building was studied. The main result of the study was that UFAD provides energy savings compared to OH in all three climate zones, both in terms of annual energy consumption and also in the reduction of peak demand HVAC annual energy reductions were greater in San Francisco but only marginally better than in the warmer climate zones of Los Angeles and Sacramento. A second major outcome of this study was improvements to the UFAD implementation in the recently released EnergyPlus v3.1. These involved improvements in stratification modeling in interior zones, addition of perimeter zone stratification models, creation of a whole building template model, and user documentation to facilitate use of the new capabilities. Finally, the effectiveness of various demand response actions such as raising the room setpoint temperature and reducing internal lighting and equipment loads was evaluated. Raising the setpoint temperature was found to be the most effective measure to reduce peak demand.
空气
摘要:本项目是对一座三层原型办公楼的能源性能进行模拟研究,该办公楼配置了传统的架空(OH)空调和地板下空气组织(UFAD)。使用EnergyPlus v3.0计算了洛杉矶、萨克拉门托和旧金山三个加州气候带的建筑的年能耗和峰值需求。研究了能源性能对建筑结构(如窗墙面积比等)和建筑其他特征的敏感性。该研究的主要结果是,在所有三个气候区,无论是在年度能源消耗方面,还是在高峰需求的减少方面,UFAD都比OH节省了能源,暖通空调的年度能源减少在旧金山更大,但仅略好于洛杉矶和萨克拉门托等温暖的气候区。本研究的第二个主要成果是UFAD的改进摘要本项目是对一座三层原型办公楼的能源性能进行模拟研究,该办公楼配置了传统的架空(OH)空调和地板下空气分配(UFAD)。使用EnergyPlus v3.0计算了洛杉矶、萨克拉门托和旧金山三个加州气候带的建筑的年能耗和峰值需求。研究了能源性能对建筑结构(如窗墙面积比等)和建筑其他特征的敏感性。该研究的主要结果是,在所有三个气候区,无论是在年度能源消耗方面,还是在高峰需求的减少方面,UFAD都比OH节省了能源,暖通空调的年度能源减少在旧金山更大,但仅略好于洛杉矶和萨克拉门托等温暖的气候区。这项研究的第二个主要成果是在最近发布的EnergyPlus v3.1中改进了UFAD的实施。这包括改进内部区域的分层建模、添加周边区域分层模型、创建整个建筑模板模型,以及方便使用新功能的用户文档。最后,评估了各种需求响应措施的有效性,如提高室内设定值温度、减少内部照明和设备负荷。提高设定值温度是降低峰值需求的最有效措施。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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