The brown-coal-fired Elektrárne Nováky (Nováky TPP) plant is located in Zemianske Kostoľany near theNovácke uhoľné bane coal mines in the District of Prievidza. In addition to electricity generation and supply, Nováky TPP provides for hot water supplies for heating of the towns of Prievidza, Nováky, Zemianske Kostoľany as well as for industrial and other organisations and steam for heat supplies to surrounding industrial enterprises.
The power plants operate in the power system under basic and semi-peak modes. With their installed capacity of 266 MWe these account for some 6% of Slovenské elektrárne, a.s. installed capacity.
The construction of the brown coal fired thermal power plant Elektráreň Nováky (ENO) began in 1949 and the first turbo-generator TG1 was commissioned in 1953. The originally planned capacity under the Phase One construction at 44.8 MWe gradually increased to 128.8 MWe and the Phase Two construction completed in 1957 brought the installed capacity of ENO, also referred to as ENO A, up to 178.8 MWe. The latter capacity was delivered by means of ten boiler units and eight turbo-generators. Following their over-30-year operation, some major segments of the main technologic equipment of the ENO A oldest part were gradually shutdown and disposed of. A fluidised-bed boiler and a new back-pressure turbo-generator having an output of 28 MWe were erected and commissioned at the cleared premises in 1996. The turbo generator TG 3 at ENO A was decommissioned in 2013.
Over the period between 1959 and 1976, other construction phases as ENO B had been implemented. Under these phases, four units, i.e. four boiler units and four turbo-generators having a total capacity of 440 MWe were added, with the utility total installed capacity coming to 618.8 MWe. In 1998, modernisation and desulphurisation of smoke gases on two 110 MWe units were brought to an end. In order to meet the emission limits effective since January 1, 2016, units 1 and 2 at ENO B were modernized, while units 3 and 4 were shut down in the end of 2015.
The current plant capacity (ENO A and ENO B) totals 266 MWe.
A heat feeder line to the town of Prievidza featuring a capacity of 137 MWt, covering 13.2 km and pipeline diameter of 2 x DN 600 was put into operation in 1987. Both the feeder line and other heat supply equipment provide from the ENO A source for heating to 15,000 dwelling units and heat supply in steam to the surrounding industrial works.
|ENO A and ENO B basic capacities|
|Installed heating:||1 358 MWt|
|Installed electric:||266 MW|
|ENO A||46 MW|
|ENO B*||220 MW|
|ENO A||1953-1957, 1996, 2003|
|ENO B||1964 (units 1 & 2)
1976 (units 3 & 4)*
|Calorific value of fuel used|
|Brown coal and lignite from Slovak coal mines||10,5 MJ/kg|
|Heavy heating oil||41,6 MJ/kg|
|Heating capacity of boilers|
|ENO A K1, K2||77 MWt|
|Fluidised-bed boiler FK1||98 MWt|
|ENO B K1, K2||269 MWt|
|K3 and K4||284 MWt|
|ENO A TG 12:||18 MW|
|TG 3 (desommissioned in 2014)||32 MW|
|TG 11||28 MW|
|ENO B Units 1, 2, 3, 4*||4 x 110 MW*|
|Prievidza heat feeder line parameters|
|Maximum heating capacity||137 MWt|
|Output circulating water temperature||150 °C|
|Return circulating water temperature||70 °C|
|Neutral point pressure||1,5 Mpa|
|ENO A exchanger station consists of|
|1 basic heater|
|2 peak heaters|
|The circulating water is provided by three circulating-water pumps.|
*units 3 & 4 at ENO B shut down on 31 December 2015