Theoretical analysis of a transcritical power cycle for power generation from waste energy at low temperature heat source

Vélez, Fredy; Chejne, Farid; Antolı́n, G.; Quijano, Ana

doi:10.1016/j.enconman.2012.01.023

Cited by 55 publications

(18 citation statements)

References 15 publications

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“…Some of the advantages of using CO 2 are that it is non-toxic, relatively inert in the temperature range of interest, abundant in nature, and cheap [55][56][57][58].…”

Section: Rankine Cyclementioning

confidence: 99%

Technologies for utilization of industrial excess heat: Potentials for energy recovery and CO2 emission reduction

Viklund

Johansson

2014

Energy Conversion and Management

111

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Industrial excess heat is a large untapped resource, for which there is potential for external use, which would create benefits for industry and society. Use of excess heat can provide a way to reduce the use of primary energy and to contribute to global CO 2 mitigation. The aim of this paper is to present different measures for the recovery and utilization of industrial excess heat and to investigate how the development of the future energy market can affect which heat utilization measure would contribute the most to global CO 2 emissions mitigation. Excess heat recovery is put into a context by applying some of the excess heat recovery measures to the untapped excess heat potential in Gävleborg County in Sweden. Two different cases for excess heat recovery are studied: heat delivery to a district heating system and heat-driven electricity generation. To investigate the impact of excess heat recovery on global CO 2 emissions, six consistent future energy market scenarios were used. Approximately 0.8 TWh/year of industrial excess heat in Gävleborg County is not used today. The results show that with the proposed recovery measures approximately 91 GWh/year of district heating, or 25 GWh/year of electricity, could be supplied from this heat. Electricity generation would result in reduced global CO 2 emissions in all of the analyzed scenarios, while heat delivery to a DH system based on combined heat and power production from biomass would result in increased global CO 2 emissions when the CO 2 emission charge is low.

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“…Some of the advantages of using CO 2 are that it is non-toxic, relatively inert in the temperature range of interest, abundant in nature, and cheap [55][56][57][58].…”

Section: Rankine Cyclementioning

confidence: 99%

Technologies for utilization of industrial excess heat: Potentials for energy recovery and CO2 emission reduction

Viklund

Johansson

2014

Energy Conversion and Management

111

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“…1. As shown, a stream of the saturated N 2 O liquid is pumped above its critical pressure (1)(2), and then heated isobarically from liquid directly to supercritical vapor (2)(3); the supercritical vapor is expanded in the turbine to extract mechanical work (3)(4); after expansion, the fluid is desuperheated and condensed in the condenser by dissipating heat to a heat sink (4-1); the condensed liquid is then pumped to the high pressure again, which completes the cycle. As the pump handles only liquid, the pump outlet temperature (state 2) should be less than critical temperature for proper operation.…”

Section: Theoretical Modeling and Simulationmentioning

confidence: 99%

Analyses and optimization of a supercritical N2O Rankine cycle for low-grade heat conversion

Sarkar

2015

Energy

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“…The waste heat can of course be converted into work based on Rankine power cycles [22]. However, the increased complexities and capital cost are considerable challenges.…”

Section: Introductionmentioning

confidence: 99%

Heat and work integration: Fundamental insights and applications to carbon dioxide capture processes

Gundersen

2016

Energy Conversion and Management

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Theoretical analysis of a transcritical power cycle for power generation from waste energy at low temperature heat source

Cited by 55 publications

References 15 publications

Technologies for utilization of industrial excess heat: Potentials for energy recovery and CO2 emission reduction

Technologies for utilization of industrial excess heat: Potentials for energy recovery and CO2 emission reduction

Analyses and optimization of a supercritical N2O Rankine cycle for low-grade heat conversion

Heat and work integration: Fundamental insights and applications to carbon dioxide capture processes

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