据估计，小型建筑中的热分配系统每年损失价值超过100亿美元的供暖和制冷能源。ASHRAE在TC6的支持下成立了标准项目委员会152P。3.开发一种测试方法，可以量化单个家庭中这些损失的程度。该测试方法现已完成公开评论期，委员会正在审查这些评论。强烈需要制定更全面的管道与建筑其他部分之间相互作用的规范。当前版本的标准152P涵盖了管道能量损失对设备效率的影响，但采用了近似的方式。精细的分析不仅会影响标准，而且会有助于建筑商和承包商证明最佳管道设计和设备规格。 特别是，风管设计与最佳设备尺寸和气流之间有着密切的关系。本研究的目的是确定标准152P中设备效率系数的函数形式，并开发算法，以量化热虹吸、连续风机运行和区域控制对管道效率的影响。文件大小:46.4 MB（48734208字节）连接速度估计时间拨号（56K）1小时56分钟1秒ISDN（128K）50分钟45秒DSL/电缆（768K）8分钟27段1.5米4分钟10秒

Thermal distribution systems in small buildings are estimated to lose more than $10 billion worth of heating and cooling energy annually. ASHRAE established Standards Project Committee 152P, under the aegis of TC6.3, to develop a test method that could quantify the extent of these losses in individual homes. This test method has now completed its public comment period, and the committee is reviewing these comments.There is a strong need to develop a more comprehensive specification of interactions between ducts and the rest of the building. The impact of duct energy losses on equipment efficiency is covered in the current version of Standard 152P, but in an approximate way. A refined analysis would not only impact the Standard but would be useful to builders and contractors in justifying optimal duct design and equipment specification. In particular, there is a strong relationship between duct design and optimal equipment sizing and airflow.The objective of this research is to determine the functional forms of the equipment efficiency factors in Standard 152P and develop algorithms to quantify the impacts on duct efficiency of thermosiphoning, continuous fan operation, and zone control.File Size:46.4 MB (48,734,208 bytes)Connection SpeedEstimated TimeDial-up (56K)1 hr, 56 min, 1 secISDN (128K)50 min, 45 secDSL/Cable (768K)8 min, 27 secT1 (1.5M)4 min, 10 sec