Evaluation of the optimum hybrid power to heat configuration for a gas turbine based industrial combined heat and power plant

Sikke Klein, Femke van Deursen

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

Abstract

Combined heat and power (CHP) is a very efficient way to generate both power and heat. However due to the increase in renewable power, the position of CHP in the energy system shifts: 1) the benefits of low effective CO2 emissions and low primary fuel consumption decrease and 2) the income from the generated power will show stronger fluctuations and will generally decrease. Most CHP plants have shifted from base load operation to flexible operation on the power market to cope with these challenges. But due to the requirement for stable heat supply, flexible operation is more challenging than for a CCGT plant. Significant flexibilization of CHP plants can be achieved by the integration with power to heat (P2H): the heat supply requirement enables the opportunity to create value out of low electricity prices during periods of excess renewable power generation using hybrid CHP-P2H-operation while during hours with high electricity prices and relatively low renewable power generation the CHP plant can run economically in its original configuration. In this paper a study is executed on the implementation of P2H in an industrial CHP plant for four different configurations, varying from a ‘simple’ external electrical boiler to a full integration using air preheating and flue gas heating. The added flexibility and reduction of fuel consumption of these configurations have been calculated. The economic analysis identified the imbalance market as the most attractive option for a hybrid CHP-P2H installation. The maximum income is generated by the CHP-P2H configuration that combines an inlet air preheater with electrical duct firing. P2H appears to be a technical feasible option to make existing CHP installations fit for operation on a power market with an increasing share of renewable power.

Original languageEnglish
Title of host publicationProceedings of the ASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition
Subtitle of host publicationVolume 3: Coal, Biomass, Hydrogen, and Alternative Fuels; Cycle Innovations; Electric Power; Industrial and Cogeneration; Organic Rankine Cycle Power Systems
Place of PublicationNew York, NY, USA
PublisherASME
Number of pages10
Volume3
ISBN (Electronic)978-0-7918-5860-8
DOIs
Publication statusPublished - 2019
EventASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition, GT 2019 - Phoenix, United States
Duration: 17 Jun 201921 Jun 2019

Conference

ConferenceASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition, GT 2019
CountryUnited States
CityPhoenix
Period17/06/1921/06/19

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  • Cite this

    Klein, S., & van Deursen, F. (2019). Evaluation of the optimum hybrid power to heat configuration for a gas turbine based industrial combined heat and power plant. In Proceedings of the ASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition : Volume 3: Coal, Biomass, Hydrogen, and Alternative Fuels; Cycle Innovations; Electric Power; Industrial and Cogeneration; Organic Rankine Cycle Power Systems (Vol. 3). [GT2019-9094] ASME. https://doi.org/10.1115/GT2019-90946