摘 要:本设计为某实验楼空调系统设计，拟为之进行中央空调系统的重新改造，为室内工作人员提供舒适的工作环境。系统采用多联机空调系统加独立新风系统。该空调系统的优点是占用建筑面积少，可集中供冷和供热，无冷却塔、水泵等辅助设施，可以任意部分负荷启动运行。同时有独立的新风系统，保证良好的室内环境。本设计中涉及了空调负荷的合理计算；室内机与室外机的优化选择（主要考虑衰减问题）；室内机与室外机布置时的注意事项，以及新风系统的正确选择。这些对于多联机系统的设计有很好的借鉴作用，为创造一个良好的室内环境提供帮助。

　　　设计内容包括：

　　　(1)了解设计对象的建筑功能

　　　(2)进行空调负荷计算

　　　(3)根据不同功能确定空调方案

　　　(4)各建筑对象空调系统设计

　　　(5)绘图

　　　(6)撰写论文

关键字：多联机、负荷计算、选型、新风机组、气流组织

Abstract:This design is air conditioning system for a building.The main work is the reconfiguring of the center central air conditioning system to provide comfortable working environment. System USES VRF air conditioning system with independent fresh air system. The advantages of the air conditioning system is taking up less building area ,concentrate on cooling and heating, without cooling tower, water pumps and any other part auxiliaries and it also can operation at any load. Meanwhile with independent fresh air system, ensuring  good indoor environment.The design involves the rational calculation of air conditioning load; Optimize of indoor units and outdoor units (considering the attenuation); the matters need attention when arrange indoor units and outdoor units, as well as the right choice for the new air system. We can learn these for designing a good VRF system.It also can help develop good environment for us.

　　　Design contents include:

　　　(1) to understand the building function of the design object

　　　(2) for air conditioning load calculation

　　　(3) according to different function affirmatory air conditioning means

　　　(4) the design of air conditioning system for each building object 

　　　(5) drawing

　　　(6) in writing papers

Keyword: VRF, load calculation, selection, fresh air units, airflow organization.