Improving the power share of waste-driven CHP plants via parallelization with a small-scale Rankine cycle, a thermodynamic analysis

Hossein Nami, Ahmad Arabkoohsar

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

12 Citationer (Scopus)

Resumé

Waste-fired CHP plants are largely contributing to the base load supply of heat and electricity sectors of several European countries. In such systems, about two-third of the production is heat and about one-third is electricity. In this study, the utilization of a certain portion of the heat production of a waste-fired CHP plant as the heat source of an Organic Rankine Cycle (ORC) is proposed. The main objective is to maximize the share of electricity production of waste-CHP plants instead of a higher heat production rate in a cost-effective way. The inspiration for this idea is that not only electricity is extremely more valued in most of the European energy markets, but also their heat sectors are to be occupied with efficient electricity-driven technologies, e.g. heat pumps. This work presents a detailed thermodynamic analysis of the proposed combined system and the best share of heat supply for driving the ORC unit is investigated. The results show that an electricity efficiency improvement of up to 25% is achievable via this integration while the heat production capacity of the power plant still remains significant. It is shown that the integration picks up of exergy efficiency of the power cycle.
OriginalsprogEngelsk
TidsskriftEnergy
Vol/bind171
Sider (fra-til)27-36
Antal sider10
ISSN0360-5442
DOI
StatusUdgivet - 15 mar. 2019

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Rankine cycle
Thermodynamics
Electricity
Hot Temperature
Exergy
Power plants
Pumps

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title = "Improving the power share of waste-driven CHP plants via parallelization with a small-scale Rankine cycle, a thermodynamic analysis",
abstract = "Waste-fired CHP plants are largely contributing to the base load supply of heat and electricity sectors of several European countries. In such systems, about two-third of the production is heat and about one-third is electricity. In this study, the utilization of a certain portion of the heat production of a waste-fired CHP plant as the heat source of an Organic Rankine Cycle (ORC) is proposed. The main objective is to maximize the share of electricity production of waste-CHP plants instead of a higher heat production rate in a cost-effective way. The inspiration for this idea is that not only electricity is extremely more valued in most of the European energy markets, but also their heat sectors are to be occupied with efficient electricity-driven technologies, e.g. heat pumps. This work presents a detailed thermodynamic analysis of the proposed combined system and the best share of heat supply for driving the ORC unit is investigated. The results show that an electricity efficiency improvement of up to 25{\%} is achievable via this integration while the heat production capacity of the power plant still remains significant. It is shown that the integration picks up of exergy efficiency of the power cycle.",
keywords = "Waste incineration, Waste-driven CHP, Organic Rankine cycle, District heating, Power grid, Thermodynamic modelling",
author = "Hossein Nami and Ahmad Arabkoohsar",
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doi = "10.1016/j.energy.2018.12.168",
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Improving the power share of waste-driven CHP plants via parallelization with a small-scale Rankine cycle, a thermodynamic analysis. / Nami, Hossein; Arabkoohsar, Ahmad.

I: Energy, Bind 171, 15.03.2019, s. 27-36.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Improving the power share of waste-driven CHP plants via parallelization with a small-scale Rankine cycle, a thermodynamic analysis

AU - Nami, Hossein

AU - Arabkoohsar, Ahmad

PY - 2019/3/15

Y1 - 2019/3/15

N2 - Waste-fired CHP plants are largely contributing to the base load supply of heat and electricity sectors of several European countries. In such systems, about two-third of the production is heat and about one-third is electricity. In this study, the utilization of a certain portion of the heat production of a waste-fired CHP plant as the heat source of an Organic Rankine Cycle (ORC) is proposed. The main objective is to maximize the share of electricity production of waste-CHP plants instead of a higher heat production rate in a cost-effective way. The inspiration for this idea is that not only electricity is extremely more valued in most of the European energy markets, but also their heat sectors are to be occupied with efficient electricity-driven technologies, e.g. heat pumps. This work presents a detailed thermodynamic analysis of the proposed combined system and the best share of heat supply for driving the ORC unit is investigated. The results show that an electricity efficiency improvement of up to 25% is achievable via this integration while the heat production capacity of the power plant still remains significant. It is shown that the integration picks up of exergy efficiency of the power cycle.

AB - Waste-fired CHP plants are largely contributing to the base load supply of heat and electricity sectors of several European countries. In such systems, about two-third of the production is heat and about one-third is electricity. In this study, the utilization of a certain portion of the heat production of a waste-fired CHP plant as the heat source of an Organic Rankine Cycle (ORC) is proposed. The main objective is to maximize the share of electricity production of waste-CHP plants instead of a higher heat production rate in a cost-effective way. The inspiration for this idea is that not only electricity is extremely more valued in most of the European energy markets, but also their heat sectors are to be occupied with efficient electricity-driven technologies, e.g. heat pumps. This work presents a detailed thermodynamic analysis of the proposed combined system and the best share of heat supply for driving the ORC unit is investigated. The results show that an electricity efficiency improvement of up to 25% is achievable via this integration while the heat production capacity of the power plant still remains significant. It is shown that the integration picks up of exergy efficiency of the power cycle.

KW - Waste incineration

KW - Waste-driven CHP

KW - Organic Rankine cycle

KW - District heating

KW - Power grid

KW - Thermodynamic modelling

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U2 - 10.1016/j.energy.2018.12.168

DO - 10.1016/j.energy.2018.12.168

M3 - Journal article

VL - 171

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JO - Energy

JF - Energy

SN - 0360-5442

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