Kondensatableitung

Kondensatableitung, or condensate drain line, is a pipeline in steam, heating, and refrigeration systems that conveys condensate (the liquid formed when steam or vapor cools) away from heat exchangers, condensers, or evaporators to a condensate receiver or to the sewer. It forms part of condensate management, along with condensate traps and pumps.

In steam heating plants, condensate forms in the steam distribution network. The condensate drain line collects this water and transports it by gravity or with the help of drain pumps to a condensate receiver, where the condensate can be returned to the boiler feedwater via a condensate return system. The line must be sized and sloped to avoid standing water and blockages, and it may be insulated to reduce heat loss or prevent condensation on nearby cold surfaces.

Materials used include steel, copper, cast iron, or plastics, chosen for temperature, pressure, and chemical compatibility. In chemical or acidic condensates, corrosion allowances and coatings may be required.

The line should be designed with safety and code compliance in mind: it must prevent backflow and backpressure, often through check valves or air gaps; fittings must be leak-tight; and drainage outlets should be protected from accidental discharge or freezing.

Maintenance involves regular inspection for leaks, corrosion, and blockages; insulation integrity checks; and periodic testing of any pumps or valves in the condensate system. In refrigeration and air conditioning, condensate drain lines remove water produced by the evaporator, typically discharging to a drain with proper trap and condensate management.