众所周知，泵在几乎所有应用中都尺寸过大。这在世界范围内都适用于工业和商业设施。HVAC泵尺寸过大以及由此产生的功率浪费的一个主要原因是担心流量不平衡（短路）——以及由此导致的一些终端装置流量不足。本讨论的目的是说明简单的电路流分析技术，使设计工程师能够识别并为新设计提供短路保护。消除短路恐惧应有助于减少泵过大的倾向。该分析技术还将建立现有建筑物的流量平衡方法，并允许大幅降低泵功率要求。 引文:研讨会，ASHRAE交易，第87卷，第一部分，伊利诺伊州芝加哥

It is well known that pumps are oversized for almost all applications. This is true worldwide, for both industrial and commercial installations. A major reason for HVAC pump oversizing and the resulting power waste is fear of flow unbalance (short circuiting)--and a consequent lack of flow for some terminal units.The purpose of this discussion is to illustrate simple circuit flow analysis techniques that will enable design engineers to identify and provide protection against short circuiting for new design. Removal of short circuit fears should help reduce the tendency to oversize pumps. The analysis technique will also establish methods for flow balance in existing buildings and permit a considerable reduction in pump power requirements.