Domestic thermal storage requirements for heat demand flexibility

John Allison, Keith Bell, Joe Clarke, Andrew Cowie, Ahmed Elsayed, Graeme Flett, Oluleye Gbemi, Adam Hawkes, Graeme Hawker, Nick Kelly, Maria Manuela Marinho de Castro, Tim Sharpe, Andy Shea, Paul Strachan

Research output: Contribution to conferencePaper

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.

Fingerprint

Heat storage
Insulation
Temperature
Space heating
Phase change materials
Magnetite
Hot Temperature
System stability
Water
Concretes

Keywords

  • thermal storage
  • flexible demand
  • housing
  • sizing
  • building simulation

Cite this

Allison, J., Bell, K., Clarke, J., Cowie, A., Elsayed, A., Flett, G., ... Strachan, P. (Accepted/In press). Domestic thermal storage requirements for heat demand flexibility. 1-10. Paper presented at The 4th Sustainable Thermal Energy Management International Conference , Alkmar, Netherlands.
Allison, John ; Bell, Keith ; Clarke, Joe ; Cowie, Andrew ; Elsayed, Ahmed ; Flett, Graeme ; Gbemi, Oluleye ; Hawkes, Adam ; Hawker, Graeme ; Kelly, Nick ; Manuela Marinho de Castro, Maria ; Sharpe, Tim ; Shea, Andy ; Strachan, Paul. / Domestic thermal storage requirements for heat demand flexibility. Paper presented at The 4th Sustainable Thermal Energy Management International Conference , Alkmar, Netherlands.10 p.
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title = "Domestic thermal storage requirements for heat demand flexibility",
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.",
keywords = "thermal storage, flexible demand, housing , sizing , building simulation",
author = "John Allison and Keith Bell and Joe Clarke and Andrew Cowie and Ahmed Elsayed and Graeme Flett and Oluleye Gbemi and Adam Hawkes and Graeme Hawker and Nick Kelly and {Manuela Marinho de Castro}, Maria and Tim Sharpe and Andy Shea and Paul Strachan",
year = "2017",
month = "3",
day = "14",
language = "English",
pages = "1--10",
note = "The 4th Sustainable Thermal Energy Management International Conference , SusTEM 2017 ; Conference date: 28-06-2017 Through 30-06-2017",
url = "http://webstore.ncl.ac.uk/conferences-and-events/-conferences-events/faculty-of-science-agriculture-engineering/sir-joseph-swan-centre-for-energy-research/the-4th-sustainable-thermal-energy-management-international-conference-sustem-2017",

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Allison, J, Bell, K, Clarke, J, Cowie, A, Elsayed, A, Flett, G, Gbemi, O, Hawkes, A, Hawker, G, Kelly, N, Manuela Marinho de Castro, M, Sharpe, T, Shea, A & Strachan, P 2017, 'Domestic thermal storage requirements for heat demand flexibility' Paper presented at The 4th Sustainable Thermal Energy Management International Conference , Alkmar, Netherlands, 28/06/17 - 30/06/17, pp. 1-10.

Domestic thermal storage requirements for heat demand flexibility. / Allison, John; Bell, Keith; Clarke, Joe; Cowie, Andrew; Elsayed, Ahmed; Flett, Graeme; Gbemi, Oluleye; Hawkes, Adam; Hawker, Graeme; Kelly, Nick; Manuela Marinho de Castro, Maria; Sharpe, Tim ; Shea, Andy; Strachan, Paul.

2017. 1-10 Paper presented at The 4th Sustainable Thermal Energy Management International Conference , Alkmar, Netherlands.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Domestic thermal storage requirements for heat demand flexibility

AU - Allison,John

AU - Bell,Keith

AU - Clarke,Joe

AU - Cowie,Andrew

AU - Elsayed,Ahmed

AU - Flett,Graeme

AU - Gbemi,Oluleye

AU - Hawkes,Adam

AU - Hawker,Graeme

AU - Kelly,Nick

AU - Manuela Marinho de Castro,Maria

AU - Sharpe,Tim

AU - Shea,Andy

AU - Strachan,Paul

PY - 2017/3/14

Y1 - 2017/3/14

N2 - 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.

AB - 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.

KW - thermal storage

KW - flexible demand

KW - housing

KW - sizing

KW - building simulation

M3 - Paper

SP - 1

EP - 10

ER -

Allison J, Bell K, Clarke J, Cowie A, Elsayed A, Flett G et al. Domestic thermal storage requirements for heat demand flexibility. 2017. Paper presented at The 4th Sustainable Thermal Energy Management International Conference , Alkmar, Netherlands.