Usually, the loss in pumping
action is a symptom of an underlying heart problem, such as coronary artery disease.
Many have found that relying on previously tried-and-tested pumping
technologies may not be enough anymore and have begun to look for alternatives.
It is essential that process and maintenance engineers review the pumping
system design in the event of a process change to ensure that it remains suitable under the new operating conditions.
They also are used for multi-channel pumping
(i.e., using one pump and a variety of tubes to transfer many different fluids simultaneously).
All of these pumps have very high pumping
speeds for water vapor, but they have, relative to water vapor, limited speeds and capacities for light gases such as helium and hydrogen.
Dry installed, clean-water pumps continue to dominate for use in main pumping
Throughout the lifetime of a pumping
system, it is unlikely that the same operating conditions will continue to prevail.
Heater sizes from 6 kw and up, pumping
capacities from l0 gpm and up, and single- and dual-zone configurations.
Also, remote monitoring systems can be used in critical pumping
systems to monitor and gather pump and system-specific data.
If the secondary line is properly designed in terms of length and diameter, the full pumping
speed of the roughing pump can be achieved.
Thouless of the University of Washington in Seattle formulated theories in the 1980s and early 1990s that indicated the feasibility of such quantum pumping
If smaller quantities are to be pumped, the pumping
must be intermittent.