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Lambda value
The heat conductivity of a material is known as its lambda value.
Latent cooling load
Latent cooling load is a measure of the amount of energy that is necessary to dehumidify the air in a building, for example, regardless of the outdoor humidity.
Laws of affinity
The laws of affinity express the mathematical relationship between flow, pump speed (rpm), head and power consumption for centrifugal pumps.
Leakage control
Air conditioning and heating systems in buildings that have special inventories or which are especially vulnerable to the effects of water damage can have leakage-protection installed.
Legionella
Legionella bacteria can be the cause of two illnesses in humans: Legionnaires’ disease, an infection that produces pneumonia and Pontiac fever, which resembles acute influenza.
Level sensors
A level sensor is a device that measures the water level.
Life cycle cost equation for pumping systems
The life cycle cost of a pump system is the total cost of all system components over their lifetime. This is typically 10 - 20 years.
Liquid subcooler
A liquid subcooler is fitted in a cooling plant in order to increase the performance of the evaporator.
LON
LON is an open network technology which is mainly used in building automation.