Seasonal solar thermal energy storage using thermochemical sorption in domestic dwellings in the UK

Zhiwei Ma, Huashan Bao, Anthony Paul Roskilly

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

The present paper explored the potential of the seasonal solar thermal energy storage (SSTES) system using ammonia-based chemisorption for domestic application in the UK. The dynamic charging/discharging performance of the SSTES has been simulated using the real weather data with the solar thermal collector models, the domestic heating demand model and the chemisorption model. The selection of working salts has significantly influence on the system design and dynamic performance. The CaCl 2 -4/8NH 3 chemisorption can satisfy almost 100% of space heating demand when using low temperature hating facility during discharging stage, however, due to its relatively higher desorption temperature and limited sunlight available in the Newcastle-upon-Tyne the required solar collectors area exceeds the commonly available space of dwelling roof. The NaBr-0/5.25NH 3 chemisorption is only able to contribute 18.6% of heating demand because the temperature of the discharged heat cannot reach the required level for most of the time in the heating season. The best scenario studied was using BaCl 2 -0/8NH 3 chemisorption SSTES (45.2 m 3 storage volume) combined with low temperature heating facilities and a 30.5 m 2 solar collector, which can cover about 57.4% of space heating for a dwelling with a heat loss coefficient at 150 W/K.

Original languageEnglish
Pages (from-to)213-222
Number of pages10
JournalEnergy
Volume166
Early online date12 Oct 2018
DOIs
Publication statusPublished - 1 Jan 2019

Keywords

  • Domestic heating demand
  • Seasonal solar thermal energy storage
  • Simulation
  • Solar heat
  • Thermochemical sorption

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Pollution
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

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