作为ASHRAE特别项目43（SP43）的一部分，针对住宅强制空气加热和冷却系统的动态季节性能，开发了住宅风管系统的瞬态有限差分模型。该模型分别处理每个风管段，并预测风管与周围环境之间的热流。在两个供暖季节和一个制冷季节，在两栋带地下室的房屋中收集了关于管道系统性能的详细实验数据，测试周期为两到四天:一栋牧场式房屋、一栋风格房屋和一栋两层房屋。对模型及其假设进行了讨论、验证和验证。该模型显示，通过管道的能量传输在5%以内。 将讨论风管性能对整个供暖和冷却系统性能的影响。本文是SP43项目系列文章的第五篇。单位:I-PCITION:研讨会，ASHRAE交易，1987年，第93卷，pt。1，纽约州纽约市

A transient finite difference model of a residential duct system has been developed as part of ASHRAE Special Project 43 (SP43), directed to the dynamic seasonal performance of residential forced air heating and cooling systems. The model treats each duct section separately and predicts the heat flow between the duct and the surrounding environment.Detailed experimental data were collected on the performance of the duct system for test periods of two to four days during two heating seasons and one cooling season in two houses with basements: a ranch,style house and a two-story house.The model and its assumptions are discussed, verified, and validated. The model is shown to track energy transport through the ducts within 5%. The effect of duct performance on overall heating and cooling system performance will be discussed. This paper is the fifth in a series on the SP43 project.Units: I-P