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District Heating Utility "Poltavateploenergo" has implemented a project, which was completed in autumn 2015. The project area includes a boiler house supplying heat and hot water to ten, mainly residential buildings but also a children's hospital and a school.Poltava boilers webThe project concept was to:

(I) Introduce demand driven heat supply to customers, by installing individual heat substations with control of heat supply in relation to outdoor temperature in all buildings connected to the boiler house.

(II) Reduce losses in the heat distribution system by replacing all district heating pipelines in the area.

(III) Replace the old boilers with new efficient condensing boilers with capacity to adapt the heat production to the heat demand.

Project results and achievements
The project in Poltava demonstrates best practices in technical design, procurement and project implementation in a small-scale project. For the city of Poltava installation of Individual Heating Substations is a new application of district heating technology. The Individual Heating Substation configuration used in the project is substantially simpler and more cost effective than the configuration previously normally used in Ukraine. Installation of the IHSs demonstrates a complete conversion to a demand driven system.
The replacement of old district heating pipelines is done with flexible type pipelines to demonstrate efficient pipe laying in narrow areas. Further reduction of investment costs could be achieved by modern pipe sizing accepting higher pressure drops.
Customers of the district heating company, residing in the buildings with the new IHSs, are benefiting from improved supply of domestic hot water and improved indoor climate.As a result of reduction of losses and improvement of production efficiency, gas savings of more than 30% has been achieved. The project is also profitable for the utility with an expected pay-back time of less than eight years.
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Project facts
Total investment: 545 000 EUR
Pay-back time: 7.3 years
Energy savings: about 35% or 2300 MWh/yr
Reduction of CO2 emissions: 415 ton/yr

Second DemoUkrainaDH in Poltava
The second DemoUkrainaDH project in Poltava involves installation of a flue gas condenser in the Tsolkovskoho 36 boiler plant. The investments will dramatically reduce the use of fossil fuels in the system. The efficiency of flue gas condensation improves substantially with lower district heating return temperature. The flue gas condenser will therefore act as a driver for measures to lower the return temperatures, for example by installing individual heat substations and other means to regulate the heat supply in accordance with the actual demand. A component to install individual heating substations in the whole area supplied from the boiler plant is included in the investment programme proposed by EBRD for modernisation and up-grade of the district heating system in Poltava.
Update July 2017

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