结合工程实践，着重论述了溴化锂直燃机机房空调冷温水及冷却水系统的设计，分析了工程中常用几种冷温水系统的特点，提出了水系统的定压及降低设备实际工作压力的方式与措施，并探讨了工程设计中应注意的其它问题。 Combining with engineering practice, the design of the cold and warm water and cooling water system of the room air-conditioner of lithium bromide direct-fired machine was emphatically discussed. The characteristics of several commonly used cold and warm water systems in the project were analyzed, and the constant pressure of the water system and the way to reduce the actual working pressure of the equipment were proposed. And measures, and explored other issues that should be noted in engineering design.