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, Tim 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.

    Author(s):Allison, John ORCID logoORCID: https://orcid.org/0000-0003-3133-0558, Bell, Keith ORCID logoORCID: https://orcid.org/0000-0001-9612-7345, Clarke, Joe ORCID logoORCID: https://orcid.org/0000-0002-4783-5107, Cowie, Andrew ORCID logoORCID: https://orcid.org/0000-0002-1852-7113, Elsayed, Ahmed, Flett, Graeme ORCID logoORCID: https://orcid.org/0000-0002-8255-5223, Gbemi, Oluleye, Hawkes, Adam, Hawker, Graeme ORCID logoORCID: https://orcid.org/0000-0003-2876-4371, Kelly, Nick ORCID logoORCID: https://orcid.org/0000-0001-6517-5942, Manuela Marinho de Castro, Maria, Sharpe, Tim, Shea, Andy and Strachan, Paul ORCID logoORCID: https://orcid.org/0000-0003-4280-2880
    Item type:Conference or Workshop Item(Paper)
    ID code:60466
    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
    Depositing user: Pure Administrator
    Date deposited:19 Apr 2017 10:32
    Last modified:11 Jan 2020 05:39
    URI:https://strathprints.strath.ac.uk/id/eprint/60466
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