Triveni manufactures condensing turbines which are fully indigenous upto 30 MW at Bangalore plant. In condensing turbines the energy available in the live inlet steam is used to the extent possible by expanding the live steam in the turbine below atmospheric pressure (vacuum). The steam is finally exhausted from the turbine at vacuum to the surface condenser where the latent heat of exhaust steam is transferred to the cooling water.

The condensed steam is then returned back to the boiler as feed water. These condensing turbines are straight-condensing type. These type of turbines find application where steam is utilized only for power generation.

The condensing turbine may also have bleed points (uncontrolled extractions) to satisfy steam demands at medium intermediate pressures. This provision is applicable when the bleed (medium pressure) steam volume demand is low and pressure variations can be tolerated. These condensing turbine are of bleed cum condensing type.

These type of turbines find application mainly for power generation where bleed steam is required for feed water heating (HP heater, LP heater and Deaerator requirement) and / or where bleed steam is utilized to meet small process demands.

The condensing turbine with one controlled extraction point is possible. This extraction steam is also used to meet process steam demand at intermediate pressure when volume demand is high and pressure variations cannot be tolerated. These turbines are of extraction cum condensing type. These turbines are typically used for co-generation where the turbine meets both the power and steam demand of the process plant. In these type of turbines the power generated can be maintained more or less at a steady level despite variation in process steam demands.

In some cases it may be necessary to have both bleed and controlled extraction steams from the condensing turbine. These turbines are of bleed cum extraction cum condensing type.

The other type of turbine that Triveni Engineering manufactures is extraction condensing turbines with fully indigenous upto 30 MW at Bangalore plant.