Modelling of mine shaft thermal energy storage (MSTES) for district heating and grid balancing

Win Eng Ewe; Graeme Flett; Paul Tuohy; Jessica Dassow; Ian Molnar; Stephanie Flude; Indrani Mukherjee; Neil Burnside; Huachuan Wang; Shangtong Yang; Daniel Whittington; Zoe Shipton

Modelling of mine shaft thermal energy storage (MSTES) for district heating and grid balancing

Win Eng Ewe, Graeme Flett, Paul Tuohy, Jessica Dassow, Ian Molnar, Stephanie Flude, Indrani Mukherjee, Neil Burnside, Huachuan Wang, Shangtong Yang, Daniel Whittington, Zoe Shipton

Research output: Contribution to conference › Paper › peer-review

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Abstract

This paper investigates the potential for water filled mineshafts or similar storage structures to provide flexibility and improve financial performance. A technoeconomic model and case study are described and Heat Pump (HP) and CHP based DH systems evaluated. Future electricity tariffs with import and export pricing based on wind generation surplus and shortfall periods, and costs for CHP fuels (e.g. hydrogen) are considered. Temperatures in MSTES and surrounding geology are modelled. MSTES integration was found to have levelised cost of heat (LCOH) advantages. With MSTES both HP and CHP based DH systems can offer up to 100% flexibility for grid balancing.

Original language	English
Number of pages	8
Publication status	Published - 25 Nov 2024
Event	uSIM2024 : Shaping Net Zero Policies with Building Simulation - Edinburgh Climate Change Institute , Edinburgh, United Kingdom Duration: 25 Nov 2024 → 25 Nov 2024 Conference number: 4 https://usim2024.org/

Conference

Conference	uSIM2024
Country/Territory	United Kingdom
City	Edinburgh
Period	25/11/24 → 25/11/24
Internet address	https://usim2024.org/

Funding

This work was funded through the EPSRC grant EP/W027763/1 for the GigaWatt-Hour Subsurface Thermal Energy storAge: Engineered structures and legacy Mine shafts: STEaM project.

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

district heating
thermal energy storage
combined heat and power
heat pump
mine shaft

Access to Document

Ewe-etal-uSIM-2024-Modelling-of-mine-shaft-thermal-energy-storageAccepted author manuscript, 1.67 MBLicence: CC BY-NC-SA 4.0

GigaWattHour Subsurface Thermal Energy storAge: Engineered structures and legacy Mine shafts: STEaM
Shipton, Z. (Principal Investigator), Burnside, N. (Co-investigator), Tuohy, P. G. (Co-investigator), Yang, S. (Co-investigator) & Johnson, G. (Research Co-investigator)
EPSRC (Engineering and Physical Sciences Research Council)
13/08/22 → 23/06/26
Project: Research

Cite this

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title = "Modelling of mine shaft thermal energy storage (MSTES) for district heating and grid balancing",

abstract = "This paper investigates the potential for water filled mineshafts or similar storage structures to provide flexibility and improve financial performance. A technoeconomic model and case study are described and Heat Pump (HP) and CHP based DH systems evaluated. Future electricity tariffs with import and export pricing based on wind generation surplus and shortfall periods, and costs for CHP fuels (e.g. hydrogen) are considered. Temperatures in MSTES and surrounding geology are modelled. MSTES integration was found to have levelised cost of heat (LCOH) advantages. With MSTES both HP and CHP based DH systems can offer up to 100\% flexibility for grid balancing. ",

keywords = "district heating, thermal energy storage, combined heat and power, heat pump, mine shaft",

author = "Ewe, \{Win Eng\} and Graeme Flett and Paul Tuohy and Jessica Dassow and Ian Molnar and Stephanie Flude and Indrani Mukherjee and Neil Burnside and Huachuan Wang and Shangtong Yang and Daniel Whittington and Zoe Shipton",

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TY - CONF

T1 - Modelling of mine shaft thermal energy storage (MSTES) for district heating and grid balancing

AU - Ewe, Win Eng

AU - Flett, Graeme

AU - Tuohy, Paul

AU - Dassow, Jessica

AU - Molnar, Ian

AU - Flude, Stephanie

AU - Mukherjee, Indrani

AU - Burnside, Neil

AU - Wang, Huachuan

AU - Yang, Shangtong

AU - Whittington, Daniel

AU - Shipton, Zoe

N1 - Conference code: 4

PY - 2024/11/25

Y1 - 2024/11/25

N2 - This paper investigates the potential for water filled mineshafts or similar storage structures to provide flexibility and improve financial performance. A technoeconomic model and case study are described and Heat Pump (HP) and CHP based DH systems evaluated. Future electricity tariffs with import and export pricing based on wind generation surplus and shortfall periods, and costs for CHP fuels (e.g. hydrogen) are considered. Temperatures in MSTES and surrounding geology are modelled. MSTES integration was found to have levelised cost of heat (LCOH) advantages. With MSTES both HP and CHP based DH systems can offer up to 100% flexibility for grid balancing.

AB - This paper investigates the potential for water filled mineshafts or similar storage structures to provide flexibility and improve financial performance. A technoeconomic model and case study are described and Heat Pump (HP) and CHP based DH systems evaluated. Future electricity tariffs with import and export pricing based on wind generation surplus and shortfall periods, and costs for CHP fuels (e.g. hydrogen) are considered. Temperatures in MSTES and surrounding geology are modelled. MSTES integration was found to have levelised cost of heat (LCOH) advantages. With MSTES both HP and CHP based DH systems can offer up to 100% flexibility for grid balancing.

KW - district heating

KW - thermal energy storage

KW - combined heat and power

KW - heat pump

KW - mine shaft

M3 - Paper

T2 - uSIM2024

Y2 - 25 November 2024 through 25 November 2024

ER -

Modelling of mine shaft thermal energy storage (MSTES) for district heating and grid balancing

Abstract

Conference

Funding

UN SDGs

Keywords

Access to Document

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Projects

GigaWattHour Subsurface Thermal Energy storAge: Engineered structures and legacy Mine shafts: STEaM

Cite this