Jet heaters are intended for heating of liquid by means of thermal energy of saturated or overheated steam and are contact heat exchangers of mixing type.
Heat transfer in the jet heater takes place by direct contact of distributed jets of heating steam and heated water. Due to the zero thermal resistance between the coolant and the heated medium, the absence of a high-temperature return condensate and a small radiant surface of the housing, the thermal efficiency of the heater is almost 100%.
Jet heaters have zero hydraulic resistance, which saves up to 90% of the energy normally spent on pumping liquid in traditional shell-and-tube or plate heat exchangers. High heat exchange rate, elimination of condensate coolers and condensate pipelines from the circuit allow to save up to 5% of the total heat consumption for liquid heating. During the 30-year service life jet heaters pay off 20-25 times.
Jet heaters are several times smaller and tens of times lighter than shell-and-tube and plate heat exchangers, which essentially facilitates their installation and operation.