Identification of various types of surplus heat (waste heat) and integration possibilities in the local or district heating
Ieva Pakere, Dagnija Blumberga

Description of the Technology

The proposed methodology includes the identification of potential waste heat sources in a particular region, municipality or urban area which will be further valorized through in-depth potential assessment, technical simulation, and cost-benefit analysis. The exergy cost method is applied to valorizing different waste heat flows by assigning an economical cost value, representing the cost of deploying a certain exergy flow through every transformation process. Different added value factors will be considered, including technical parameters of waste heat sources, used transmission and storage technologies, and heat sink requirements. Based on technical and economic modelling results,  a decision-making model is developed for relevant stakeholders and recommendations on suitable conditions for waste heat integration into existing heat supply systems and future smart energy systems from the legislative organizational and business perspective.


The identification of different types of waste heat and the technical, economic and environmental assessment of integration options are applicable to the long-term planning of the development of energy systems, to define specific goals and tasks in heat supply companies and municipalities in order to ensure the sustainable development of the energy sector.


Identification and integration of waste heat allow planning long-term development scenarios, making well-thought-out investments and systemic development of the urban environment, and identifying synergies between energy efficiency and district heating. 


District heating,energy efficiency,waste heat,heat recovery

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