The benefits of 4th generation district heating and energy efficient datacentres

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This paper identifies the energy system benefits of transitioning district heating infrastructure from current 3rd generation district heating (3GDH) to 4th generation district heating (4GDH) with lower grid temperatures and more integration with other energy sectors. Previous papers have investigated the effect of going from 3GDH to 4GDH on a local perspective. In this paper it is investigated how this transition affects the energy system on a national level, where both the costs and energy effects are evaluated based on national hourly energy systems simulations including all energy sectors in a climate neutral energy system scenario. Moreover, the paper identifies the effects of different cooling solutions in datacentres. The analyses include effects on heat sources as well as the effect on the cost and losses in the district heating grid. This is done for the case of Denmark. In the case of Denmark, it is found that transitioning from 3GDH to 4GDH decreases the system cost by 220 M EUR/year, corresponding to 7 M EUR/TWh delivered heat at the end-user. Increasing the temperature outlet of datacentre waste heat has a value for the system as high as 52–59 M EUR/year, corresponding to 1.7–1.9 M EUR/TWh delivered heating at the end-user.

Antal sider9
StatusUdgivet - 1 dec. 2022

Bibliografisk note

Funding Information:
The work presented in this paper is a result of the research activities of the projects Life4HeatRecovery and Heat Plan Denmark 2021 (Varmeplan Danmark 2021). LIFE4HeatRecovery project (Contract Number: LIFE17 CCM/IT/000085 ) has received funding from the LIFE programme of the European Union . Heat Plan Denmark 2021 has received funding from the companies Danfoss, Grundfos and Innargi .

Publisher Copyright:
© 2022 The Authors


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