Cogeneration is the simultaneous generation of electricity and heat. It is possible to produce electricity and steam with gas turbines, gas engines, steam turbines.
Steam turbines have been in use for many years for facilities which use steam intensively. Cogeneration in those facilities is applied to two types of steam turbine; back pressure and extraction.

The back pressure turbine is preferred for facilities  whose steam use is stable.

The initial investment costs of back pressure turbine systems are lower.

The extraction turbine is suitable to extract steam before steam flowing through the last stage and extracted steam can be used for many processes needed by facility, while the steam not used by the facility is transferred to the condensate under vacuum. When the facility does not need steam, extraction steam will not be used, so all the steam produced will be converted to electricity. The initial investment costs of back pressure turbine systems are lower.

The superheated steam produced by the high-pressure boiler is first tranferred to the steam turbine. Steam at operating pressure which comes out from backpressure turbine is transferred to the process. It is favorable for facilities with constant steam needed.

It does not matter if the capacity of the facility is somewhat variable, since the turbine and therefore the boiler are operated modulatingly according to the operation of the facility. Generally, many steam turbines can provide at least 30% proportionality.

Although coal-fired boiler installations have increased significantly in our country since 2000, coal use in cogeneration systems has not been able managed except huge thermal power plants, because of the improper orientation of the investor or because the investors can not meet these high engineering product demands. Ünversan, by realizing the insufficiency in this area, has been producing complete cogeneration systems with fluidized bed superheated steam boilers for investors, which is a high engineering product. Our first fluidized bed boiler has been producing 1,200 kW of electricity with back-pressure steam turbine per hour with 40 barg and  450 ° C superheated.

Since our aim is presentation of information to the industry, innovative design, quality manufacturing, honorable trade and customer satisfaction, we offer services to our country’s industrialists to minimize energy expenditures with competitive investment proposals that are not offered to investors till now.    

If coal-fired enterprises switch to a cogeneration system, they will save huge amounts of money by producing electricity just with a small amount of additional coal.