Waste heat recovery from a data centre and 5G smart poles for low-temperature district heating network
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2021-03-01
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Language
en
Pages
19
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Energy, Volume 218
Abstract
The city of Espoo, Finland is planning to develop Kera as a green suburb with high level of energy efficiency and low CO2 emissions, using a high share of renewable energy and recycled or reused energy. For reaching this target, in this study, renewable energy resources such as solar, wind and waste heat are investigated for the study region. Two different technologies comprising heat pump (HP) and heat-only boiler (HOB) are investigated to retrieve waste heat from a data centre and LuxTurrim5G smart poles to use in a low-temperature district heating network. We investigate various scenarios to supply the required energy for the HP (which receives electricity from the electricity market, photovoltaic (PV) system, wind turbine (WT) and hybrid PV/WT; 4 scenarios) and HOB (which works with electricity, forest fuel wood, biogas, ammonia, wood pellets and industry wood residue; 6 scenarios). We found that the heat pump scenario is an efficient and cost-effective way to retrieve waste heat from the data centre and 5G smart poles with an LCOE of 3.192 cent/kWh if electricity is produced by the PV system, and 3.516 cent/kWh when the heat pump receives its electricity only from the electricity market. (C) 2020 Elsevier Ltd. All rights reserved.Description
Funding Information: The authors would like to acknowledge Business Finland for their financial support for the LuxTurrim5G project. We would also like to thank Aalto University’s Department of Mechanical Engineering for their support in the project. We acknowledge the building energy consumption data from the Academy of Finland’s RenewFIN project and for funding the work of S. Syri. Publisher Copyright: © 2020 Elsevier Ltd Copyright: Copyright 2020 Elsevier B.V., All rights reserved.
Keywords
low temperature district heating network, waste heat recovery, ejector expansion heat pump, renewable energy
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Citation
Khosravi, A, Laukkanen, T, Vuorinen, V & Syri, S 2021, ' Waste heat recovery from a data centre and 5G smart poles for low-temperature district heating network ', Energy, vol. 218, 119468 . https://doi.org/10.1016/j.energy.2020.119468