Encyclopedia search

Reset search
Showing 381 to 390 of 395 results
U-value
The U-value describes the heat loss per sq. metre in relation to the temperature difference between the interior and exterior.
Variable frequency drive
A variable frequency drive is used for adjusting a flow or pressure to the actual demand.
UV water treatment
UV treatment of water is a common method of combating microorganisms. This procedure treats only bacteria that passes the UV bulb and should be regarded as a gatekeeper. This procedure gives no long term protection.
Wastewater
Wastewater is a common designation for any water that in one or another way has been affected in quality by human influence.
Vortex impeller
The benefit of a vortex impeller over a channel impeller is the minimised risk of clogging.
Water filtration
Filtration of water is a method of combating microorganisms. This procedure treats only bacteria which passes the filter. This method should be regarded as a gatekeeper.
Water-brine cooled oil cooler
Water-brine cooled oil cooler is an application used to remove a part of the energy input to compress the refrigerant from suction to discharge pressure as well as mechanical friction.
Water flow rate
Required heating capacity and required temperature differential of the medium are relevant when calculating the design water flow rate for a heating system.
Water hammer
Water hammer can cause pipelines to break or induced damage to equipment if the water hammer is severe enough.
Water hammering
Destructive force that relates to the incompressibility of water.