High Temperature Air Source Heat Pump Coupled with Thermal Energy Storage: An Analysis of Demand-Side Management Designed for Flattening the Grid Demand

Khoa Le, M Huang, Nikhilkumar Shah, Paul MacArtain, Raymond Byrne, Neil Hewitt

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

High temperature air source heat pumps (HT-ASHPs) have a good potential for retrofitting the domestic built environment in the UK because they can directly replace existing fossil-fuelled boilers without the requirement of modification of the heat distribution systems, which makes them cost-competitive regarding retrofit aspect and allows the UK to attain the carbon cut target. However, a widespread of these heat pumps would pose a challenge to the grid demand. In this study, a demand-side management (DSM) strategy was developed to address this issue. Thermal energy storage (TES) was integrated with HT-ASHPs to perform the developed DSM, which aimed at levelling off the grid demand by means of switching on the heat pump to charge the TES where there was low demand (midnight to 7am) and switching off the heat pump during peak hours (4pm to 7pm). The reference case was a mid-terraced dwelling equipped with traditional wet radiators, which is a typical house in Northern Ireland. TRNSYS simulations were used to run the developed DSM. Different TES sizes and set point temperatures were examined to seek the optimum values. The study also analysed with different electricity tariffs including flat rate, Economy 7 (the electricity is cheaper in night time than daytime) and Powershift (the electricity is divided into three bands: low, normal and peak). Results showed that both the tank size and setpoint temperature strongly affected the heat pump performances. The TES size of 1m3 and set point of 75˚C were the ideal parameters because it could shift wholly the 3-hour peak demand. The effects of the developed DSM on the grid and how the tariffs affected the system have also been discussed in this paper.
LanguageEnglish
Title of host publicationSET2018
Place of PublicationWuhan, China
Number of pages10
Publication statusPublished - Sep 2018
Event17th International Conference on Sustainable Energy Technologies - Wuhan, China
Duration: 21 Aug 201823 Aug 2018
http://set2018.org/

Conference

Conference17th International Conference on Sustainable Energy Technologies
CountryChina
CityWuhan
Period21/08/1823/08/18
Internet address

Fingerprint

Air source heat pumps
Thermal energy
Energy storage
Pumps
Electricity
Temperature
Retrofitting
Radiators
Boilers
Demand side management
Hot Temperature
Carbon
Costs

Keywords

  • high temperature heat pump
  • air source heat pump
  • thermal storage
  • Demand-side management
  • electricity tariffs

Cite this

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title = "High Temperature Air Source Heat Pump Coupled with Thermal Energy Storage: An Analysis of Demand-Side Management Designed for Flattening the Grid Demand",
abstract = "High temperature air source heat pumps (HT-ASHPs) have a good potential for retrofitting the domestic built environment in the UK because they can directly replace existing fossil-fuelled boilers without the requirement of modification of the heat distribution systems, which makes them cost-competitive regarding retrofit aspect and allows the UK to attain the carbon cut target. However, a widespread of these heat pumps would pose a challenge to the grid demand. In this study, a demand-side management (DSM) strategy was developed to address this issue. Thermal energy storage (TES) was integrated with HT-ASHPs to perform the developed DSM, which aimed at levelling off the grid demand by means of switching on the heat pump to charge the TES where there was low demand (midnight to 7am) and switching off the heat pump during peak hours (4pm to 7pm). The reference case was a mid-terraced dwelling equipped with traditional wet radiators, which is a typical house in Northern Ireland. TRNSYS simulations were used to run the developed DSM. Different TES sizes and set point temperatures were examined to seek the optimum values. The study also analysed with different electricity tariffs including flat rate, Economy 7 (the electricity is cheaper in night time than daytime) and Powershift (the electricity is divided into three bands: low, normal and peak). Results showed that both the tank size and setpoint temperature strongly affected the heat pump performances. The TES size of 1m3 and set point of 75˚C were the ideal parameters because it could shift wholly the 3-hour peak demand. The effects of the developed DSM on the grid and how the tariffs affected the system have also been discussed in this paper.",
keywords = "high temperature heat pump, air source heat pump, thermal storage, Demand-side management, electricity tariffs",
author = "Khoa Le and M Huang and Nikhilkumar Shah and Paul MacArtain and Raymond Byrne and Neil Hewitt",
year = "2018",
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Le, K, Huang, M, Shah, N, MacArtain, P, Byrne, R & Hewitt, N 2018, High Temperature Air Source Heat Pump Coupled with Thermal Energy Storage: An Analysis of Demand-Side Management Designed for Flattening the Grid Demand. in SET2018. Wuhan, China, 17th International Conference on Sustainable Energy Technologies, Wuhan, China, 21/08/18.

High Temperature Air Source Heat Pump Coupled with Thermal Energy Storage: An Analysis of Demand-Side Management Designed for Flattening the Grid Demand. / Le, Khoa; Huang, M; Shah, Nikhilkumar; MacArtain, Paul; Byrne, Raymond; Hewitt, Neil.

SET2018. Wuhan, China, 2018.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

TY - GEN

T1 - High Temperature Air Source Heat Pump Coupled with Thermal Energy Storage: An Analysis of Demand-Side Management Designed for Flattening the Grid Demand

AU - Le, Khoa

AU - Huang, M

AU - Shah, Nikhilkumar

AU - MacArtain, Paul

AU - Byrne, Raymond

AU - Hewitt, Neil

PY - 2018/9

Y1 - 2018/9

N2 - High temperature air source heat pumps (HT-ASHPs) have a good potential for retrofitting the domestic built environment in the UK because they can directly replace existing fossil-fuelled boilers without the requirement of modification of the heat distribution systems, which makes them cost-competitive regarding retrofit aspect and allows the UK to attain the carbon cut target. However, a widespread of these heat pumps would pose a challenge to the grid demand. In this study, a demand-side management (DSM) strategy was developed to address this issue. Thermal energy storage (TES) was integrated with HT-ASHPs to perform the developed DSM, which aimed at levelling off the grid demand by means of switching on the heat pump to charge the TES where there was low demand (midnight to 7am) and switching off the heat pump during peak hours (4pm to 7pm). The reference case was a mid-terraced dwelling equipped with traditional wet radiators, which is a typical house in Northern Ireland. TRNSYS simulations were used to run the developed DSM. Different TES sizes and set point temperatures were examined to seek the optimum values. The study also analysed with different electricity tariffs including flat rate, Economy 7 (the electricity is cheaper in night time than daytime) and Powershift (the electricity is divided into three bands: low, normal and peak). Results showed that both the tank size and setpoint temperature strongly affected the heat pump performances. The TES size of 1m3 and set point of 75˚C were the ideal parameters because it could shift wholly the 3-hour peak demand. The effects of the developed DSM on the grid and how the tariffs affected the system have also been discussed in this paper.

AB - High temperature air source heat pumps (HT-ASHPs) have a good potential for retrofitting the domestic built environment in the UK because they can directly replace existing fossil-fuelled boilers without the requirement of modification of the heat distribution systems, which makes them cost-competitive regarding retrofit aspect and allows the UK to attain the carbon cut target. However, a widespread of these heat pumps would pose a challenge to the grid demand. In this study, a demand-side management (DSM) strategy was developed to address this issue. Thermal energy storage (TES) was integrated with HT-ASHPs to perform the developed DSM, which aimed at levelling off the grid demand by means of switching on the heat pump to charge the TES where there was low demand (midnight to 7am) and switching off the heat pump during peak hours (4pm to 7pm). The reference case was a mid-terraced dwelling equipped with traditional wet radiators, which is a typical house in Northern Ireland. TRNSYS simulations were used to run the developed DSM. Different TES sizes and set point temperatures were examined to seek the optimum values. The study also analysed with different electricity tariffs including flat rate, Economy 7 (the electricity is cheaper in night time than daytime) and Powershift (the electricity is divided into three bands: low, normal and peak). Results showed that both the tank size and setpoint temperature strongly affected the heat pump performances. The TES size of 1m3 and set point of 75˚C were the ideal parameters because it could shift wholly the 3-hour peak demand. The effects of the developed DSM on the grid and how the tariffs affected the system have also been discussed in this paper.

KW - high temperature heat pump

KW - air source heat pump

KW - thermal storage

KW - Demand-side management

KW - electricity tariffs

M3 - Conference contribution

BT - SET2018

CY - Wuhan, China

ER -