District heat network as a short-term energy storage

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District heat network as a short-term energy storage. / Kouhia, Mikko; Laukkanen, Timo; Holmberg, Henrik; Ahtila, Pekka.

In: Energy (the International Journal), Vol. 177, No. June, 15.06.2019, p. 293-303.

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@article{4c125aa652ec4432b52658e4ba7e085e,
title = "District heat network as a short-term energy storage",
abstract = "In this article, we show how a revised district heat network control strategy can be employed to utilize the storage capabilities of the network. An optimization problem is formulated, with minimum operating costs as the objective. Allowing the district heat supply temperature to vary freely within given boundaries results in approximately 2{\%} reduction in annual heat provision costs, in comparison to a reference control scheme in a case study. The benefits of added heat storage functionality in the network are greatest when there is a large difference between district heat generation costs from the available heat sources. In general, supply temperature optimization results in increased operational hours of those plants, whose variable costs are the lowest. (C) 2019 Elsevier Ltd. All rights reserved.",
keywords = "District heat, Energy storage, Optimization, Combined heat and power, SYSTEM, THERMAL INERTIA, OPTIMAL OPERATION, POWER-TO-HEAT, PUMPS, FLEXIBILITY, TECHNOLOGIES, INTEGRATION, FACILITATE, OPTIMIZATION",
author = "Mikko Kouhia and Timo Laukkanen and Henrik Holmberg and Pekka Ahtila",
year = "2019",
month = "6",
day = "15",
doi = "10.1016/j.energy.2019.04.082",
language = "English",
volume = "177",
pages = "293--303",
journal = "Energy (the International Journal)",
issn = "0360-5442",
number = "June",

}

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TY - JOUR

T1 - District heat network as a short-term energy storage

AU - Kouhia, Mikko

AU - Laukkanen, Timo

AU - Holmberg, Henrik

AU - Ahtila, Pekka

PY - 2019/6/15

Y1 - 2019/6/15

N2 - In this article, we show how a revised district heat network control strategy can be employed to utilize the storage capabilities of the network. An optimization problem is formulated, with minimum operating costs as the objective. Allowing the district heat supply temperature to vary freely within given boundaries results in approximately 2% reduction in annual heat provision costs, in comparison to a reference control scheme in a case study. The benefits of added heat storage functionality in the network are greatest when there is a large difference between district heat generation costs from the available heat sources. In general, supply temperature optimization results in increased operational hours of those plants, whose variable costs are the lowest. (C) 2019 Elsevier Ltd. All rights reserved.

AB - In this article, we show how a revised district heat network control strategy can be employed to utilize the storage capabilities of the network. An optimization problem is formulated, with minimum operating costs as the objective. Allowing the district heat supply temperature to vary freely within given boundaries results in approximately 2% reduction in annual heat provision costs, in comparison to a reference control scheme in a case study. The benefits of added heat storage functionality in the network are greatest when there is a large difference between district heat generation costs from the available heat sources. In general, supply temperature optimization results in increased operational hours of those plants, whose variable costs are the lowest. (C) 2019 Elsevier Ltd. All rights reserved.

KW - District heat

KW - Energy storage

KW - Optimization

KW - Combined heat and power

KW - SYSTEM

KW - THERMAL INERTIA

KW - OPTIMAL OPERATION

KW - POWER-TO-HEAT

KW - PUMPS

KW - FLEXIBILITY

KW - TECHNOLOGIES

KW - INTEGRATION

KW - FACILITATE

KW - OPTIMIZATION

UR - http://www.scopus.com/inward/record.url?scp=85067964472&partnerID=8YFLogxK

U2 - 10.1016/j.energy.2019.04.082

DO - 10.1016/j.energy.2019.04.082

M3 - Article

VL - 177

SP - 293

EP - 303

JO - Energy (the International Journal)

JF - Energy (the International Journal)

SN - 0360-5442

IS - June

ER -

ID: 34881433