Sizing, selecting pumps and circulators

摘要

There are a number of pumps manufactured today that can be used for different applications. The most typical application is circulating and distributing chilled or hot water for a variety of different building or facility load requirements. The process of selecting and sizing pumps and circulators includes several steps that a designer needs to take to complete his or her task for any given installation. The concepts to consider for a particular design task and the designer's experience level will determine the complexity of the overall process. Sizing and selecting pumps is not that difficult once the experience has been gained. At the very least, the designer must: 1. Define and understand the system application, and perform a hydraulic or fluid system analysis 2. Determine the basic pump (or circulator) and driver type for the application 3. Determine the pump size and its design operating point 4. Decide on pump design considerations to maximize the system's energy efficiency.