Passive Design Assistant software tool

被动设计助手（PDA）是一个展示“被动”（非机械）热设计原理的软件工具。这包括：绝缘、太阳能增益、热质量、通风和气候等因素。PDA可以评估建筑物在“自由运行”（非机械）模式下的温度，或建筑物在机械模式下运行时的供暖和制冷需求。PDA具有简单直观的用户界面，使用户能够快速方便地了解关键参数的影响。该软件对单个空间进行建模，并使用行业标准的计算方法。结果显示清楚，并响应参数的变化即时。用户可以从材料类型库中构建材料，并输入特定地点的气候数据。它的目的是，该软件是简单到足以被所有那些参与或对建筑设计感兴趣的人使用。它既可以用于教育目的，也可以用于早期设计。PDA可以从http://www.arup.com/Publications/Passive_Design_Assistant.aspx免费下载

Passive Design Assistant (PDA) is a software tool that demonstrates the principles of “passive” (non-mechanical) thermal design. This includes factors such as: insulation, solar gain, thermal mass, ventilation and climate.PDA enables an assessment to be made of temperatures within a building operating in ‘free running’ (non-mechanical) mode or the demand for heating and cooling when the building is being operated in a mechanical mode.PDA has a simple and intuitive user interface that enables the user to understand the influence of key parameters in a quick and easily accessible way. The software models a single space and uses an industry-standard calculation method. Results are displayed clearly and respond to parameter changes instantly. The user can construct material build ups from a library of material types and input site-specific climate data.It is intended that the software is simple enough to be used by all those involved with or interested in the design of buildings. It can be used either for educative purposes or to inform early-stage design.PDA is available as a free download from: http://www.arup.com/Publications/Passive_Design_Assistant.aspx