Solar Hot Water Systems Using Latent Heat Thermal Energy Storage: Perspectives and Challenges

Domestic water heating accounts for 15% to 27% of the total energy consumption in buildings in Australia. Over the past two decades, the latent heat thermal energy storage (LHTES) system has been widely investigated as a way to reduce fossil fuel consumption and increase the share of renewable energ...

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Main Authors: Nishant Modi, Xiaolin Wang, Michael Negnevitsky
Format: Article
Language:English
Published: MDPI AG 2023-02-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/16/4/1969
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author Nishant Modi
Xiaolin Wang
Michael Negnevitsky
author_facet Nishant Modi
Xiaolin Wang
Michael Negnevitsky
author_sort Nishant Modi
collection DOAJ
description Domestic water heating accounts for 15% to 27% of the total energy consumption in buildings in Australia. Over the past two decades, the latent heat thermal energy storage (LHTES) system has been widely investigated as a way to reduce fossil fuel consumption and increase the share of renewable energy in solar water heating. However, the research has concentrated on the geometric optimisation of the LHTES heat exchanger for the past few years, and this might not be sufficient for commercialisation. Moreover, recent review papers mainly discussed the development of a particular heat-transfer improvement technique. This paper presents perspectives on various solar hot water systems using LHTES to shift focus to on-demand performance studies, as well as structure optimisation studies for faster commercialisation. Future challenges are also discussed. Since the topic is an active area of research, this paper focuses on references that showcase the overall performance of LHTES-assisted solar hot water systems and cannot include all published work in the discussion. This perspective paper provides directional insights to researchers for developing an energy-efficient solar hot water system using LHTES.
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spelling doaj.art-3dd8bd91a73540d7b1d9f507ed39c2732023-11-16T20:20:22ZengMDPI AGEnergies1996-10732023-02-01164196910.3390/en16041969Solar Hot Water Systems Using Latent Heat Thermal Energy Storage: Perspectives and ChallengesNishant Modi0Xiaolin Wang1Michael Negnevitsky2School of Engineering, University of Tasmania, Hobart, TAS 7005, AustraliaSchool of Engineering, University of Tasmania, Hobart, TAS 7005, AustraliaSchool of Engineering, University of Tasmania, Hobart, TAS 7005, AustraliaDomestic water heating accounts for 15% to 27% of the total energy consumption in buildings in Australia. Over the past two decades, the latent heat thermal energy storage (LHTES) system has been widely investigated as a way to reduce fossil fuel consumption and increase the share of renewable energy in solar water heating. However, the research has concentrated on the geometric optimisation of the LHTES heat exchanger for the past few years, and this might not be sufficient for commercialisation. Moreover, recent review papers mainly discussed the development of a particular heat-transfer improvement technique. This paper presents perspectives on various solar hot water systems using LHTES to shift focus to on-demand performance studies, as well as structure optimisation studies for faster commercialisation. Future challenges are also discussed. Since the topic is an active area of research, this paper focuses on references that showcase the overall performance of LHTES-assisted solar hot water systems and cannot include all published work in the discussion. This perspective paper provides directional insights to researchers for developing an energy-efficient solar hot water system using LHTES.https://www.mdpi.com/1996-1073/16/4/1969heat pipelatent heat thermal energy storagephase-change materialNEPCMsolar energysolar water heating
spellingShingle Nishant Modi
Xiaolin Wang
Michael Negnevitsky
Solar Hot Water Systems Using Latent Heat Thermal Energy Storage: Perspectives and Challenges
Energies
heat pipe
latent heat thermal energy storage
phase-change material
NEPCM
solar energy
solar water heating
title Solar Hot Water Systems Using Latent Heat Thermal Energy Storage: Perspectives and Challenges
title_full Solar Hot Water Systems Using Latent Heat Thermal Energy Storage: Perspectives and Challenges
title_fullStr Solar Hot Water Systems Using Latent Heat Thermal Energy Storage: Perspectives and Challenges
title_full_unstemmed Solar Hot Water Systems Using Latent Heat Thermal Energy Storage: Perspectives and Challenges
title_short Solar Hot Water Systems Using Latent Heat Thermal Energy Storage: Perspectives and Challenges
title_sort solar hot water systems using latent heat thermal energy storage perspectives and challenges
topic heat pipe
latent heat thermal energy storage
phase-change material
NEPCM
solar energy
solar water heating
url https://www.mdpi.com/1996-1073/16/4/1969
work_keys_str_mv AT nishantmodi solarhotwatersystemsusinglatentheatthermalenergystorageperspectivesandchallenges
AT xiaolinwang solarhotwatersystemsusinglatentheatthermalenergystorageperspectivesandchallenges
AT michaelnegnevitsky solarhotwatersystemsusinglatentheatthermalenergystorageperspectivesandchallenges