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A modelling methodology for assessing use of datacenter waste heat in greenhouses
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Industrilized and sustainable construction.ORCID iD: 0000-0002-2699-2533
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.ORCID iD: 0000-0001-8235-9639
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Signals and Systems.ORCID iD: 0000-0002-4310-7938
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2017 (English)Conference paper, Published paper (Refereed)
Abstract [en]

In Sweden, the number of datacenters establishments are steadily increasing thanks to green, stable and affordable electricity, free air cooling, advantageous energy taxes and well-developed Internet fiber infrastructures. Even though datacenters use a lot of energy, the waste heat that they create is seldom reused. A possible cause is that this waste heat is often low grade and airborne: it is therefore hard to directly inject it into a district heating system without upgrades, which require additional energy and equipment that generate extra costs. One option for reusing this heat without needs for upgrades is to employ it for heating up greenhouses. But assessing the feasibility of this approach by building physical prototypes can be costly, therefore using computer models to simulate real world conditions is an opportunity. However, there is a lack of computer modelling methodologies that can assess the possibility of using waste heat from datacenters in greenhouses in cold climates.

The objective of this paper is therefore to propose such a methodology and discuss its benefits and drawbacks in comparison with other research studies. This methodology combines computational fluid dynamics, process modelling and control engineering principles into a computer model that constitutes a decision support system to study different waste heat and greenhouse or mushroom house scenarios.

The paper validates the strategy through a case study in northern Sweden, where we assess the amount of produced waste heat by collecting temperature, relative humidity, and fan speed data for the air discharged from the datacenter.

The resulting methodology, composed by conducting measurements and computer models, calculations can then be used for other datacenter operators or greenhouse developers to judge whether it is possible or not to build greenhouses using datacenter waste heat.

Place, publisher, year, edition, pages
2017.
National Category
Energy Engineering Other Civil Engineering Fluid Mechanics and Acoustics Control Engineering Other Biological Topics
Research subject
Construction Engineering and Management; Control Engineering; Energy Engineering; Fluid Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-66466OAI: oai:DiVA.org:ltu-66466DiVA, id: diva2:1155483
Conference
Third International Conference on Environmental Science and Technology, ICOEST, Budapest, 19-23 October 2017
Funder
Swedish Energy Agency, 41845-1Available from: 2017-11-08 Created: 2017-11-08 Last updated: 2017-12-01Bibliographically approved

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Authority records BETA

Sandberg, MarcusRisberg, MikaelLjung, Anna-LenaVaragnolo, DamianoNilsson, Michael

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CiteExportLink to record
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