A combined heat and green hydrogen (CHH) generator integrated with a heat network

Dominic Burrin; Sumit Roy; Anthony Paul Roskilly; Andrew Smallbone

doi:10.1016/j.enconman.2021.114686

A combined heat and green hydrogen (CHH) generator integrated with a heat network

Dominic Burrin, Sumit Roy, Anthony Paul Roskilly, Andrew Smallbone

University of Durham

Research output: Contribution to journal › Article › peer-review

25 Citations (Scopus)

14 Downloads (Pure)

Abstract

Combined heat and power (CHP) systems offer high energy efficiencies as they utilise both the electricity generated and any excess heat by co-suppling to local consumers. This work presents the potential of a combined heat and hydrogen (CHH) system, a solution where Proton exchange membrane (PEM) electrolysis systems producing hydrogen at 60–70% efficiency also co-supply the excess heat to local heat networks. This work investigates the method of capture and utilisation of the excess heat from electrolysis. The analysed system was able to capture 312 kW of thermal energy per MW of electricity and can deliver it as heated water at either 75 °C or 45 °C this appropriate for existing district heat networks and lower temperature heat networks respectively. This yields an overall CHH system efficiency of 94.6%. An economic analysis was conducted based on income generated through revenue sales of both hydrogen and heat, which resulted in a significant reduction in the Levelized Cost of Hydrogen.

Original language	English
Article number	114686
Number of pages	11
Journal	Energy Conversion and Management
Volume	246
Early online date	1 Sept 2021
DOIs	https://doi.org/10.1016/j.enconman.2021.114686
Publication status	Published - 15 Oct 2021
Externally published	Yes

Bibliographical note

Funder

This research work was funded by the Engineering and Physical Science Research Council of UK (Grant numbers: EP/R041970/2, EP/T022949/1 and EP/P001173/1).

Keywords

Combined heat and hydrogen system
Heat networks
Hydrogen economy
Proton exchange membrane electrolyser
Techno-economic analysis

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Nuclear Energy and Engineering
Fuel Technology
Energy Engineering and Power Technology

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.enconman.2021.114686Licence: CC BY

Roy2021VoRFinal published version, 2.76 MBLicence: CC BY

Cite this

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title = "A combined heat and green hydrogen (CHH) generator integrated with a heat network",

abstract = "Combined heat and power (CHP) systems offer high energy efficiencies as they utilise both the electricity generated and any excess heat by co-suppling to local consumers. This work presents the potential of a combined heat and hydrogen (CHH) system, a solution where Proton exchange membrane (PEM) electrolysis systems producing hydrogen at 60–70% efficiency also co-supply the excess heat to local heat networks. This work investigates the method of capture and utilisation of the excess heat from electrolysis. The analysed system was able to capture 312 kW of thermal energy per MW of electricity and can deliver it as heated water at either 75 °C or 45 °C this appropriate for existing district heat networks and lower temperature heat networks respectively. This yields an overall CHH system efficiency of 94.6%. An economic analysis was conducted based on income generated through revenue sales of both hydrogen and heat, which resulted in a significant reduction in the Levelized Cost of Hydrogen.",

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AU - Burrin, Dominic

AU - Roy, Sumit

AU - Roskilly, Anthony Paul

AU - Smallbone, Andrew

PY - 2021/10/15

Y1 - 2021/10/15

N2 - Combined heat and power (CHP) systems offer high energy efficiencies as they utilise both the electricity generated and any excess heat by co-suppling to local consumers. This work presents the potential of a combined heat and hydrogen (CHH) system, a solution where Proton exchange membrane (PEM) electrolysis systems producing hydrogen at 60–70% efficiency also co-supply the excess heat to local heat networks. This work investigates the method of capture and utilisation of the excess heat from electrolysis. The analysed system was able to capture 312 kW of thermal energy per MW of electricity and can deliver it as heated water at either 75 °C or 45 °C this appropriate for existing district heat networks and lower temperature heat networks respectively. This yields an overall CHH system efficiency of 94.6%. An economic analysis was conducted based on income generated through revenue sales of both hydrogen and heat, which resulted in a significant reduction in the Levelized Cost of Hydrogen.

AB - Combined heat and power (CHP) systems offer high energy efficiencies as they utilise both the electricity generated and any excess heat by co-suppling to local consumers. This work presents the potential of a combined heat and hydrogen (CHH) system, a solution where Proton exchange membrane (PEM) electrolysis systems producing hydrogen at 60–70% efficiency also co-supply the excess heat to local heat networks. This work investigates the method of capture and utilisation of the excess heat from electrolysis. The analysed system was able to capture 312 kW of thermal energy per MW of electricity and can deliver it as heated water at either 75 °C or 45 °C this appropriate for existing district heat networks and lower temperature heat networks respectively. This yields an overall CHH system efficiency of 94.6%. An economic analysis was conducted based on income generated through revenue sales of both hydrogen and heat, which resulted in a significant reduction in the Levelized Cost of Hydrogen.

KW - Combined heat and hydrogen system

KW - Heat networks

KW - Hydrogen economy

KW - Proton exchange membrane electrolyser

KW - Techno-economic analysis

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A combined heat and green hydrogen (CHH) generator integrated with a heat network

Abstract

Bibliographical note

Funder

Keywords

ASJC Scopus subject areas

UN SDGs

Access to Document

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