Waste heat from data centers: An investment analysis

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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date

2019-01-01

Department

Department of Communications and Networking
Department of Energy and Mechanical Engineering

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Language

en

Pages

17

Series

Sustainable Cities and Society, Volume 44, pp. 428-444

Abstract

The growth of computing and Internet use have attracted the attention of the general public concerning the carbon footprint of data centers (DCs). Previous research has focused on the implementations of energy efficiency activities. However, little research has been published on the economic evaluation of waste heat utilization in the DC industry. This paper aims to provide an economic investment assessment of DC waste heat utilization. The contribution of this paper is the assessment of three different sized cases with realistic input factors affecting the net present value (NPV) model. We contribute to the ongoing discussion on the energy efficiency of DCs and provide a transparent assessment model for DC and district heating operators. We identified the positive NPV cases with high probability. The medium case has an NPV of 1.04 M€ (with uncertainty, the results range from −0.332 M€ to 2.57 M€). The large case has an NPV of 16.3 M€ (with uncertainty, the results range from 4.1 M€ to 30.2 M€). Both of these are clear-cut waste heat utilization investment proposals. The small case NPV is −48.5 k€ (with uncertainty, the results range from −264 k€ to 143 k€). The small case is sensitive to input factor values.

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Keywords

Data center, District heating, Energy capture, Energy efficiency, Heat pump, Net present value, SYSTEM, MANAGEMENT, PERFORMANCE, ENERGY EFFICIENCY, RECOVERY, TECHNOLOGY, ECONOMIC-ANALYSIS

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DOI

10.1016/j.scs.2018.10.023

Citation

Pärssinen, M, Wahlroos, M, Manner, J & Syri, S 2019, 'Waste heat from data centers : An investment analysis', Sustainable Cities and Society, vol. 44, pp. 428-444. https://doi.org/10.1016/j.scs.2018.10.023

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https://urn.fi/URN:NBN:fi:aalto-201812106248

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[article-cris] Insinööritieteiden korkeakoulu / ENG