Investigation of an innovative three-phase thermochemical reactor for building’s application

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Abstract

To tackle climate change worldwide, increasing the share of renewable energy in buildings sector is essential. While the dynamic nature of the renewables is an obstacle for improving its efficiency. In this context, thermal energy storage technologies are to store the renewables and act as a continuous clean energy supply to meet building’s demand. Thermochemical energy storage stands out in advantages including high energy storage density and low thermal loss in long term storage. For a thermochemical energy storage system, the thermochemical reactor is critical. This paper illustrates the drawback of the current thermochemical reactors applied in buildings, including: (1) high air flow pressure drop of air flow while providing robust support for thermochemical material, (2) low thermal conductivity of the material reducing reactor performance, (3) the extract/supply energy from/to the reactor effectively in charging and discharging. To tackle these challenges, this paper proposes an innovative three-phase thermochemical reactor and numerically investigates its performance in charging and discharging processes. The reactor features side opening for air flow and thermochemical material support. To extract heat effectively and enhance heat and mass transfer within the reactor, a fin copper pipe is integrated in the reactor. The reactor performance analysis show that the heat and mass transfer performance has been improved by 129% and 55% in charging and by 77% for COP and 13% mass transfer performance in discharging.
Original languageEnglish
JournalApplied Energy
Publication statusAccepted/In press - 2020

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Energy storage
Mass transfer
Air
Copper pipe
Heat transfer
airflow
Fins (heat exchange)
mass transfer
Thermal energy
Climate change
Pressure drop
Thermal conductivity
heat transfer
reactor
thermal conductivity
pressure drop
pipe
copper
Hot Temperature
climate change

Cite this

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title = "Investigation of an innovative three-phase thermochemical reactor for building’s application",
abstract = "To tackle climate change worldwide, increasing the share of renewable energy in buildings sector is essential. While the dynamic nature of the renewables is an obstacle for improving its efficiency. In this context, thermal energy storage technologies are to store the renewables and act as a continuous clean energy supply to meet building’s demand. Thermochemical energy storage stands out in advantages including high energy storage density and low thermal loss in long term storage. For a thermochemical energy storage system, the thermochemical reactor is critical. This paper illustrates the drawback of the current thermochemical reactors applied in buildings, including: (1) high air flow pressure drop of air flow while providing robust support for thermochemical material, (2) low thermal conductivity of the material reducing reactor performance, (3) the extract/supply energy from/to the reactor effectively in charging and discharging. To tackle these challenges, this paper proposes an innovative three-phase thermochemical reactor and numerically investigates its performance in charging and discharging processes. The reactor features side opening for air flow and thermochemical material support. To extract heat effectively and enhance heat and mass transfer within the reactor, a fin copper pipe is integrated in the reactor. The reactor performance analysis show that the heat and mass transfer performance has been improved by 129{\%} and 55{\%} in charging and by 77{\%} for COP and 13{\%} mass transfer performance in discharging.",
author = "Shuli Liu",
year = "2020",
language = "English",
journal = "Applied Energy",
issn = "0306-2619",
publisher = "Elsevier",

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T1 - Investigation of an innovative three-phase thermochemical reactor for building’s application

AU - Liu, Shuli

PY - 2020

Y1 - 2020

N2 - To tackle climate change worldwide, increasing the share of renewable energy in buildings sector is essential. While the dynamic nature of the renewables is an obstacle for improving its efficiency. In this context, thermal energy storage technologies are to store the renewables and act as a continuous clean energy supply to meet building’s demand. Thermochemical energy storage stands out in advantages including high energy storage density and low thermal loss in long term storage. For a thermochemical energy storage system, the thermochemical reactor is critical. This paper illustrates the drawback of the current thermochemical reactors applied in buildings, including: (1) high air flow pressure drop of air flow while providing robust support for thermochemical material, (2) low thermal conductivity of the material reducing reactor performance, (3) the extract/supply energy from/to the reactor effectively in charging and discharging. To tackle these challenges, this paper proposes an innovative three-phase thermochemical reactor and numerically investigates its performance in charging and discharging processes. The reactor features side opening for air flow and thermochemical material support. To extract heat effectively and enhance heat and mass transfer within the reactor, a fin copper pipe is integrated in the reactor. The reactor performance analysis show that the heat and mass transfer performance has been improved by 129% and 55% in charging and by 77% for COP and 13% mass transfer performance in discharging.

AB - To tackle climate change worldwide, increasing the share of renewable energy in buildings sector is essential. While the dynamic nature of the renewables is an obstacle for improving its efficiency. In this context, thermal energy storage technologies are to store the renewables and act as a continuous clean energy supply to meet building’s demand. Thermochemical energy storage stands out in advantages including high energy storage density and low thermal loss in long term storage. For a thermochemical energy storage system, the thermochemical reactor is critical. This paper illustrates the drawback of the current thermochemical reactors applied in buildings, including: (1) high air flow pressure drop of air flow while providing robust support for thermochemical material, (2) low thermal conductivity of the material reducing reactor performance, (3) the extract/supply energy from/to the reactor effectively in charging and discharging. To tackle these challenges, this paper proposes an innovative three-phase thermochemical reactor and numerically investigates its performance in charging and discharging processes. The reactor features side opening for air flow and thermochemical material support. To extract heat effectively and enhance heat and mass transfer within the reactor, a fin copper pipe is integrated in the reactor. The reactor performance analysis show that the heat and mass transfer performance has been improved by 129% and 55% in charging and by 77% for COP and 13% mass transfer performance in discharging.

M3 - Article

JO - Applied Energy

JF - Applied Energy

SN - 0306-2619

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