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:
Case studies:Variable speed drives on heating, ventilating, air conditioning {HVAC) system pumps.
THE COMPRESSOR:COMPRESSOR INSTALLATION.
Low pressure and vacuum:Hopper off-loading and Trickle valves
Optimizing and up-rating of existing systems:The influence of changing pipeline diameter
Review of pneumatic conveying systems:System requirements and Multiple pick-up
Conveying capability:High pressure conveying – Part II
ROUBLESHOOTING PNEUMA TIC CIRCUITS:Sliding-Vane Compressors
VALVES:fLOW CONTROL VALVES
PNEUMATIC BASICS
Pneumatic piping, hoses and connections.
Seals: Rotary actuators and Constructional details.
A brief system comparison: An electrical system ,A hydraulic system ,A pneumatic system and A co...
SUMMARY OF ENERGY TRANSFER BY HEAT,WORK,AND MASS
POWER AND REFRIGER A TION CYCLES:AN OVERVIEW OF RECIPROCATING ENGINES
SUMMARY OF FORCED CONVECTION