System curves
Most systems have a combination of static and friction head and the system curves for two cases are shown in Figures 2.4 and 2.5. The ratio of static to friction head over the operating range influences the benefits achievable from variable speed drives (see Section 4.2.2.2) Static head is a characteristic of the specific installation and reducing
this head, where this is possible, generally helps both the cost of the installation and the cost of pumping the liquid. Friction head losses must be minimized to reduce pumping cost, but after eliminating unnecessary pipe fittings and length, further reduction in friction head will require larger diameter pipes, which adds to installation cost.
Related posts:
Particle degradation:Influence of variables
Pipelines and valves:Isolating valves and Butterfly valves
Pipelines and valves:Surface finish
Moisture and condensation:Relative humidity and Psychrometric chart.
First approximation design methods:Empirical relationships
First approximation design methods:Operating point and Solids loading ratios.
Pipeline scaling parameters:Stepped pipelines
COMPRESSORS:Liquid Seal Ring Compressors
Hydraulic accessories:Beta ratio
Hydraulic circuit design and analysis:Symbols of hydraulic components
BASIC DIAGRAMS AND SYSTEMS:DIAGRAMS
Safety.
Actuators:rotary actuators
BASICCONCEPTS OF THE RMODYNAMICS:FORMS OF ENERGY
THE FIRST LAW OF THERMODYNAMICS:SOME STEADY-FLOW ENGINEERING DEVICES