A master thesis from Aalborg University
Integration of Waste Heat from Power to X in District Heating Systems
Author(s)
Term
4. Term
Publication year
2023
Submitted on
2023-06-01
Pages
103 pages
Abstract
Power-to-X is a promising technology for decarbonising parts of the industry and the transport sector. The former Danish government formulated a national strategy for Power-to-X to reach a capacity of 4-6GW of electrolysis capacity by 2030. The capacity would result in a large waste heat stream due to heat loss. Since the existing research on the utilisation of waste heat is limited, this thesis investigated how the integration of waste heat from Power-to-X can be utilised in the district heating systems of Sønderborg. Waste heat from Power-to-X differs from the dominant technologies since it is a fluctuating heat source that cannot be controlled directly by the district heating companies and the utilisation may require a stronger cooperation of the district heating companies in the area. The quantitative analyses showed that there is a potential for expanding the district heating system and the total expansions could increase the annual heat demand by 15%. The utilisation of the waste heat depends on whether the system is interconnected or two separate systems. Compared to the existing system, the utilisation of the waste heat is feasible from both a business and socioeconomic perspective if the two district heating systems are connected by a transmission line. Depending on the size of the Power-to-X plant, waste heat could contribute 34-56% of the annual heat production if the systems are interconnected.
Keywords
Documents
Colophon: This page is part of the AAU Student Projects portal, which is run by Aalborg University. Here, you can find and download publicly available bachelor's theses and master's projects from across the university dating from 2008 onwards. Student projects from before 2008 are available in printed form at Aalborg University Library.
If you have any questions about AAU Student Projects or the research registration, dissemination and analysis at Aalborg University, please feel free to contact the VBN team. You can also find more information in the AAU Student Projects FAQs.