住宅中央送风系统各部件之间的动态相互作用非常复杂，因此很难评估系统选项对整个系统的年度能源使用的影响。ASHRAE特殊项目SP43于1982年启动，旨在为暖通空调行业提供一种评估系统组件和控制模式选项的方法，该方法将考虑设备和建筑结构在不同天气模式下的动态相互作用。在过去六年中，该项目在美国天然气研究所（ASHRAE）、天然气研究所（Gas Research Institute）和美国能源部（U.S.Department of Energy）的联合赞助下，在巴特尔1e哥伦布（Battel 1e Columbus）进行。本报告涵盖了第四阶段，其重点如下:升级SP43模拟模型的单区版本，尤其是其风管系统子模型；更新该模型的验证；使用该模型的单区版本来评估供暖系统和控制选项，这将是ASHRAE手册年度能源使用信息的基础； SP43仿真模型的扩展，包括多区域能力；在多区域运行期间，利用两个无人居住的试验室获得的现场数据验证了其预测能力。1982年至1985年进行的第一阶段和第二阶段，包括SP43模拟模型的单区版本的开发和验证，以及在两座安装了大量仪器的无人居住房屋中进行的供暖模式测试。第三阶段于1985年和1986年进行，以在冷却模式下验证SP43模型。

The dynamic interactions between components of residential central forced-air systems are sufficiently complex that it is difficult to assess the impact of systems options on annual energy use for the total system. ASHRAE Special Project SP43 was initiated in 1982 to provide the HVAC industry with a means to assess options of system components and control modes, in a way that would account for the dynamic interaction of equipment and building structure in response to varying weather patterns. The project has been conducted at Battel 1e-Columbus over the past six years under the joint sponsorship of ASHRAE, the Gas Research Institute, and the U.S. Department of Energy.This report covers Phase IV, which had as its focus the following: the upgrading of the single-zone version of the SP43 Simulation Model, and in particular, its duct system submodel; the updating of the validation of that model; the use of the single-zone version of the model to evaluate heating system and control options that would be the basis for information on annual energy use for the ASHRAE Handbook; the extending of the SP43 Simulation Model to include a multi-zone capability; and the validating of its predictive capability against field data obtained in two unoccupied test houses during multi-zone operation.Phases I and II, conducted in 1982 through 1985, included the development and validation of the single-zone version of the SP43 Simulation Model with tests in the heating mode carried out in two unoccupied houses that were extensively instrumented. Phase III was conducted in 1985 and 1986 to validate the SP43 model in the cooling mode.