ESCO Project Olovo

 

Dvokut pro
Aved Hume 11
71000 Sarajevo
Tel:+387 33 447 881, 447 875
Email:dvokutvbih.net.ba
www. Dvokut.ba
www.biomasa.ba

  • Dvokut pro Ltd, Sarajevo
  • Olovo (Bosnia and Herzegovina)
  • 2012
  • 10 Years, 0 months.
  • Education
  • RES
  • 6,3 years
  • Energy service agreements (EPC, ESC)
  • 4.000 m2 < X < 8.000 m2

  • RES
    A new biomass heating plant was built in Olovo in order to provide heating for two schools, which used coal and heating oil for heating before the implementation of this project. 700 kW boiler is installed in the plant. EPC model is used in this case.
    • 4.000 m2 < X < 8.000 m2
    • 4600 m2
    • schools
    • central
    • Coal and heating oil
  • Before After
    34.454 kWh 25.549 kWh
  • Total Investment:
    % of own resources: 20
    % funded: 80
  • Energy service agreements (EPC, ESC)

    Energy service agreements (EPC, ESC) Public-private partnership Procurement procedure: Tendering procedure is very complicated Project development: EPC market is in early development phase

    • Procurement procedure
    • Project development
    • Lower emissions
    • Increased energy security and reduced dependence on foreign imports
    • Improvements to public budget

  • Certainly, the model is suitable for replication under conditions where there are technical and administrative preconditions for implementation.

  • The project has built a new heating plant that consists of the following elements - Biomass storage of rectangular cross section, equipped with a push system mounted on the floor (with special reinforcement, driven hydraulic aggregate, at the one end of which there is a dispensing channel, equipped with a level detector and an electric motor that can move in both directions. - The fuel dosing device in the boiler with the receiving basket and the dosing box supplied with a hydraulic pushbutton that inserts the fuel into the combustion chamber. The device is equipped with microprocessors and through appropriate sensors connected to the PLC driving system, enabling its fully automated operation. The boiler furnace consists of the following elements: - Biomass gasifier is of a cylindrical cross section, vertical. The chamber is equipped with a revision opening and a manual fire door. The chamber has an air distribution system that is connected to two fans, frequently controlled and connected to the PLC control system. The internal part of the flame-retardant gasifier is coated with a high-temperature resistant, trioxide-based, shawl. On the outside of the chamber there is a double steel sheath that has a dual function, protects the working area and operator from direct contact with high temperatures while simultaneously preheating the air required for the gasification process. -The gasifier is equipped with a temperature sensor, a Jumo product or similar, which provides temperature data that is controlled inside the chamber and transmits them to the PLC unit that manages the system at the same time. The gasifier is thermally insulated from the outside. -Secondary chamber serves for the inflow of gas generated in the gasification process. In the secondary chamber, which is also made of a double steel sheath, there is an air distribution assembly equipped with a frequency controlled fan connected to the PLC. The air dosing compartment in the secondary chamber has been designed in a multi-mode regime for the purpose of reducing NOX emissions. The secondary chamber is equipped with a temperature sensor and sensor for continuous measurements of O2 content in the smoke gases (lambda sensor), connected to the PLC, through which signals are regulated by the process in the chamber itself as well as other parts of the device. Exit from the secondary chamber represents the input to the vertical heat exchanger. The secondary chamber is also thermally insulated. - Heat exchanger with capacity of 700 kWth. After a full recovery, the gaseous products enter into a vertical, heat exchanger, designed to operate in the 90/70 ° C mode. The modifier contains water distribution pipes, where digital temperature gauges are attached to the PLC system.


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