1. Valorisation of Waste Heat in Existing and Future District Heating Systems.
- Author
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Pakere, Ieva, Blumberga, Dagnija, Volkova, Anna, Lepiksaar, Kertu, and Zirne, Agate
- Subjects
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HEATING from central stations , *WASTE heat , *HEATING , *SOLAR technology , *HEAT pumps , *HEATING load - Abstract
To recover thermal energy from different sources, its quality and possibilities for utilisation are essential. The wide range of engineering solutions includes a direct connection to the district heating (DH) system and the integration of low-quality heat using heat pumps to increase the temperature level of recoverable heat. Therefore, this article compares waste heat valorisation strategies for integration into existing DH networks, low-temperature DH, and ultra-low heat supply systems using the multi-criteria assessment method. In addition, a local scale assessment was performed to identify the waste heat role in existing RES-based DH systems. The results show that the highest waste heat valorisation rate could be reached when integrated into low-temperature DH systems due to high waste heat potential and suitable temperature conditions. However, a local scale assessment shows a significant impact on the already implemented solar technologies, as waste heat could cover around 70% of the summer heat load. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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