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Strainer
Strainers are integrated into heating and cooling systems to filter impurities from the circulating medium.
Stress corrosion cracking
Metallic corrosion involves the loss of metal at a spot on an exposed surface - ranging from uniform attacks over the entire surface to severe local attacks.
Stribeck curve
The Stribeck curve is an overall view of friction variation in the entire range of lubrication, including the hydrodynamic, mixed, and boundary lubrication.
Subcooling
Subcooling is a technical expression for a refrigerant in liquid phase at a temperature lower than the corresponding evaporating temperature to the actual pressure.
Submerged installation
The two most common installation types are free standing pump installation and pump installation on an auto coupling.
Suction lift
Suction lift refers to the pressure (negative pressure) on the suction side of the pump.
Suction superheater
The purpose of the suction superheater in a cooling system is to protect the compressor from liquid drops, and to increase the evaporating section of the evaporator.
Superheating
Superheating is a technical expression for a refrigerant in gas phase at a temperature higher than the corresponding evaporation temperature related to the actual pressure.
Suspended solids
Particles which remain in suspension in water are called suspended solids.
System characteristic
The system characteristic describes the connection between volume flow-rate and pressure loss in a given pipe system.