Techno-economic analysis of latent heat thermal energy storage integrated heat pump for indoor heating

• DOI: 10.1016/j.energy.2024.131291
• Publication Date: 2024-04-16T18:03:21Z
• Authors: Lianying Shan; Andrew Martin; Justin NingWei Chiu
• Keywords: Phase-change material; Coefficient of performance

Latent heat thermal energy storage (LHTES) implemented in residential heating systems has attracted attention for its role peak/load shifting. A novel layout integrating LHTES with a pump is proposed to store low grade during off-peak demand period, later used as source the on-peak period. This assessed according different seasons, height-to-diameter (H/D) ratios, mass ratios of inflow water radiator return water, and levelized cost (LCOE). The results show that an overall increased amount power input required when utilizing LHTES, while it can shift 2.8∼3.6 kW electricity from off-peak. case H/D ratio 1.7 shows slight reductions costs LCOE compared 0.6. Considering costs, 50% performs better December 2022 10% January 2023 due operating conditions. integrated system are 1.0 %∼2.1% higher than those typical limitations rated capacity lower effectiveness shell-and-tube exchanger.