Domestic thermal storage requirements for heat demand flexibility

Allison, John and Bell, Keith and Clarke, Joe and Cowie, Andrew and Elsayed, Ahmed and Flett, Graeme and Gbemi, Oluleye and Hawkes, Adam and Hawker, Graeme and Kelly, Nick and Manuela Marinho de Castro, Maria and Sharpe, Timothy and Shea, Andy and Strachan, Paul (2017) Domestic thermal storage requirements for heat demand flexibility. In: The 4th Sustainable Thermal Energy Management International Conference, 2017-06-28 - 2017-06-30, The Golden Tulip Hotel. (In Press)

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Abstract

Future changes to the UK’s energy system, specifically radically increasing the deployment of renewable energy sources at all scales, will require much more flexibility in demand to ensure system stability. Using dynamic building simulation, this paper explores the feasibility of using thermal storage to enable flexibility in heat demand over a range of timescales: diurnal, weekly and seasonal. Time-varying space heating and hot water demand profiles for four common UK housing types were generated, accounting for different occupancy characteristics and various UK climates. These simulated heat demand profiles were used to calculate the necessary storage volumes for four heat storage options: hot water, concrete, high-temperature magnetite blocks and an inorganic phase change material. The results indicated that without first radically improving insulation levels to reduce heat demands, even facilitating diurnal heat storage would require low-temperature, sensible heat storage volumes well in excess of 1000L, in many cases. Storage of heat over more than a few days becomes infeasible due to the large storage volumes required, except in the case of dwellings with small heat demands and using high-temperature storage. However, for heat storage at high temperature, retention of heat over longer time periods becomes challenging event with significant levels of insulation.

ORCID iDs

Allison, John ORCID: https://orcid.org/0000-0003-3133-0558

Bell, Keith ORCID: https://orcid.org/0000-0001-9612-7345

Clarke, Joe ORCID: https://orcid.org/0000-0002-4783-5107

Cowie, Andrew ORCID: https://orcid.org/0000-0002-1852-7113

Flett, Graeme ORCID: https://orcid.org/0000-0002-8255-5223

Hawker, Graeme ORCID: https://orcid.org/0000-0003-2876-4371

Kelly, Nick ORCID: https://orcid.org/0000-0001-6517-5942

Sharpe, Timothy ORCID: https://orcid.org/0000-0002-4275-5351

Strachan, Paul ORCID: https://orcid.org/0000-0003-4280-2880

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• Item metadata

  Item type:	Conference or Workshop Item(Paper)
  ID code:	60466
  Dates:	Date Event 14 March 2017 Published 14 March 2017 Accepted
  Keywords:	thermal storage, flexible demand, housing , sizing , building simulation, Environmental engineering, Renewable Energy, Sustainability and the Environment, Electrical and Electronic Engineering, Building and Construction, Mechanical Engineering
  Subjects:	Technology > Engineering (General). Civil engineering (General) > Environmental engineering
  Department:	Faculty of Engineering > Mechanical and Aerospace Engineering Faculty of Engineering > Electronic and Electrical Engineering Strategic Research Themes > Energy Faculty of Engineering > Architecture
  Depositing user:	Pure Administrator
  Date deposited:	19 Apr 2017 10:32
  Last modified:	01 Nov 2023 12:29
  URI:	https://strathprints.strath.ac.uk/id/eprint/60466