冷冻水系统中的低回水温度问题非常复杂。这可能与经典的“鸡和蛋”故事有关——哪一个先出现？在一些暖通空调系统中，回水温度较低。是因为系统设计的类型吗？是因为系统的设计方式吗？是因为为系统选择了设备吗？是因为系统的安装方式吗？是因为系统的运行方式吗？是因为系统的维护方式吗？答案是上述任何一个原因、几个原因或所有原因。 因此，在我们进入低回水温度固化现有系统的取证之前，让我们回顾一下现代冷冻水系统的正确设计技术。正确的设计，提前，减轻了以后治疗症状的需要。单位:双引文:研讨会论文，大西洋城，2002年

The topic of low return water temperature in chilled water systems is very complex. It can be related to the classic "chicken and the egg" story--which came first?Low return water temperatures do exist in some HVAC systems. Is it because of the type of system design? Is it because of the way the system is designed? Is it because of the equipment selected for the system? Is it because of the way the system is installed? Is it because of the way the system is operated? Is it because of the way the system is maintained?The answer is any one of the above reasons, several of the above reasons, or all of the above reasons. So before we get into the forensics of curing an existing system with low return water temperature, let's review the proper design techniques for modern chilled water systems. Proper design, up front, alleviates the need to treat symptoms later.Units: Dual