Simulations on design and system performance of building heating boosted by thermal energy storage (TES) with magnesium hydro carbonates/silica gel

Rickard Erlund, Ron Zevenhoven*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

Abstract

In this paper, a simulations model of a seasonal thermal energy storage (TES) reactor integrated into a house heating system is presented. The water vapour chemisorbing reactor contains a composite material composed of silica gel and hydrated magnesium carbonate (nesquehonite, MgCO3·3H2O) that can be produced by a carbon capture and storage by mineralisation process. The performance of the TES to supply winter heat instead of electrical resistance heat is analysed. Dividing the reactor into a few units (connected in series) for better heat output and storage capacity as developed by the authors is compared to one unit or parallel unit solutions. The heating system components are an exhaust air heat pump, solar collectors and a heat recovery ventilation unit (HRV). The TES is used as heat source during colder periods, which implies improved efficiency and coefficient of performance (COP). Around 70% of electrical resistance heat, assisting an exhaust air heat pump during cold periods, can be substituted with heat from the TES according to the simulation model. Connecting three units in series will increase the usable storage capacity possibilities with by a 49% higher heat output.
Original languageEnglish
Article number4520
Number of pages14
JournalEnergies
Volume13
Issue number17
DOIs
Publication statusPublished - 1 Sep 2020
MoE publication typeA1 Journal article-refereed

Keywords

  • thermal energy storage
  • hydrated magnesium carbonate
  • simulation
  • heating system
  • silica gel
  • exhaust air heat pump

Fingerprint

Dive into the research topics of 'Simulations on design and system performance of building heating boosted by thermal energy storage (TES) with magnesium hydro carbonates/silica gel'. Together they form a unique fingerprint.

Cite this