View in EDS

Optimization of data centre waste heat integration into the low-temperature district heating networks

Saved in:
Bibliographic Details
Title: Optimization of data centre waste heat integration into the low-temperature district heating networks
Authors: Miškić, Josip, Dorotić, Hrvoje, Pukšec, Tomislav, Soldo, Vladimir, Duić, Neven
Source: Optimization and Engineering
Volume 25
Publisher Information: Springer Science and Business Media LLC, 2023.
Publication Year: 2023
Subject Terms: Optimization, Techno-economic assessment, TEHNIČKE ZNANOSTI. Strojarstvo. Procesno energetsko strojarstvo, data centre, TECHNICAL SCIENCES. Mechanical Engineering. Process Energy Engineering, techno-economic assessment, waste heat, Data centre, District heating, Pinch analysis, Waste heat, pinch analysis, optimization, district heating
Description: The number of data centres (DC) in recent years is growing rapidly, and with that, the share in total consumption of electricity is growing too. A significant amount of electricity is transformed into heat energy which increases the optimal temperature in DC for component operation. This heat needs to be removed and usually, it doesn’t have any further application. Today it is recognized that waste heat can be integrated into district heating (DH) and by using it reduce the usage of conventional heat fuels. Integration of waste heat is possible in three ways: with a heat exchanger (HEX), with a booster heat pump, or with the combination of the HEX and heat pump. In this paper, a combination of HP and HEX was used. Although those utilizations are examined and implemented, there is a lack of research on the optimization of the integration of waste heat into the district heating network (DHN). To perform optimization, a thermodynamic model of the DC and a pinch analysis model were developed. In this study, a method for evaluating the economic feasibility of DC waste heat integration into DH systems is proposed. The most suitable integration technology of waste heat into DH systems by using the hourly merit order of waste heat utilization technologies based on pinch analysis is found. The connection pipe between DC and DHN is optimized, and the ideal diameter is determined considering different temperature regimes of the network: low-temperature, ultralow temperature, and neutral temperature networks. The methodology was tested using a case study of a DC in the City of Zagreb.
Document Type: Article
File Description: application/pdf
Language: English
ISSN: 1573-2924
1389-4420
DOI: 10.1007/s11081-023-09837-5
Access URL: https://urn.nsk.hr/urn:nbn:hr:235:106306
https://repozitorij.fsb.unizg.hr/islandora/object/fsb:11250
https://repozitorij.fsb.unizg.hr/islandora/object/fsb:11250/datastream/FILE0
Rights: Springer Nature TDM
URL: http://rightsstatements.org/vocab/InC/1.0/
Accession Number: edsair.doi.dedup.....6665c69831895b51d82c6bd3d476d52b
Database: OpenAIRE
Description
Abstract:The number of data centres (DC) in recent years is growing rapidly, and with that, the share in total consumption of electricity is growing too. A significant amount of electricity is transformed into heat energy which increases the optimal temperature in DC for component operation. This heat needs to be removed and usually, it doesn’t have any further application. Today it is recognized that waste heat can be integrated into district heating (DH) and by using it reduce the usage of conventional heat fuels. Integration of waste heat is possible in three ways: with a heat exchanger (HEX), with a booster heat pump, or with the combination of the HEX and heat pump. In this paper, a combination of HP and HEX was used. Although those utilizations are examined and implemented, there is a lack of research on the optimization of the integration of waste heat into the district heating network (DHN). To perform optimization, a thermodynamic model of the DC and a pinch analysis model were developed. In this study, a method for evaluating the economic feasibility of DC waste heat integration into DH systems is proposed. The most suitable integration technology of waste heat into DH systems by using the hourly merit order of waste heat utilization technologies based on pinch analysis is found. The connection pipe between DC and DHN is optimized, and the ideal diameter is determined considering different temperature regimes of the network: low-temperature, ultralow temperature, and neutral temperature networks. The methodology was tested using a case study of a DC in the City of Zagreb.
ISSN:15732924
13894420
DOI:10.1007/s11081-023-09837-5