Читать книгу Pump Wisdom - Robert X. Perez - Страница 20

Understanding the concepts of N _s and N _ss will assist in specifying better pumps. In addition to fluid properties pump life is influenced by throughput. Just as an automobile transmission is designed to work best at particular speeds or optimum gear ratios, pumps have desirable flow ranges. Deviating from optimum flow will influence failure risk and life expectancy.