Eductors for Heating Liquids
Eductor liquid heaters operate by condensing steam into the liquid that is being heated. The process ensures a complete transfer of the BTUs in the steam to the liquid. The steam gives up its BTUs as it condenses into the liquid. This also dilutes the motive liquid with the condensate. Eductor liquid heaters function under the normal principles of eductors. In actuality, the process is that of a liquid pumping a gas.
The only thing that differs with pumping steam as a suction fluid is the increased affinity of steam for cold water. Because of this affinity, a greater volume of steam is pumped under the same conditions. Also, in some cases, the BTUs being released allow the unit to discharge to higher pressures than either the motive or the suction pressure.
There are three connections common to all venturi eductors.
- Performance Table
- Motive Connection
- Suction Connection
- Discharge Connection
|Max Temp Rise (°F)||180||215||200|
|Maximum Flow Heated (GPM)||5000||5000||700|
|Steam Press Range (PSIG)||Vac-45||Vac-120||0-150|