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:
Benefits, drawbacks and operational issues:Resonant vibrations in vertical pumps
Air flow rate evaluation:Supply pressure and Volumetric flow rate.
Gas–solid separation devices:Separation devices and Gravity settling chambers.
Operating problems:Rotary valves and Flow control
HYDRAULIC PUMPS:Wobble Plate Inline Pumps and Bent Axis Pumps.
Applications of hydraulic systems:Components of hydraulic systems.
LINES, FITTINGS, AND SEALS:Tube Cutting and Deburring
Compressor types:Piston compressors,Screw compressors,Rotary compressors and Dynamic compressors.
A brief system comparison: An electrical system ,A hydraulic system ,A pneumatic system and A co...
Fundamental Principles:a hydraulic system
Hydraulic and Pneumatic Accessories:cost of air leaks
THE FIRST LAW OF THERMODYNAMICS:THE FIRST LAW OF THERMODYNAMICS
ENTROPY:ISENTROPIC EFFICIENCIES OF STEADY-FLOW DEVICES
POWER AND REFRIGER A TION CYCLES:THE CARNOT CYCLE AND ITS VALUE IN ENGINEERING
POWER AND REFRIGER A TION CYCLES:ACTUAL VAPOR-COMPRESSION REFRIGERATION CYCLE