Performance evaluation of an open thermochemical energy storage system integrated with flat plate solar collector

Mukherjee, Ankit; Majumdar, Rudrodip; Saha, Sandip K.; Subramaniam, Chandramouli; Kumar, Lalit

doi:10.1016/j.applthermaleng.2020.115218

Cited by 31 publications

(6 citation statements)

References 42 publications

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“…This section examines the impact of the sesquihydrate–double salt transformation on the system’s energy density. In a large system, the conversion often proceeds through a reaction front . It means that the material close to the inlet of the reactor is exposed to humid air until the entire reactor volume is converted.…”

Section: Resultsmentioning

confidence: 99%

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Impact of Atmospheric CO₂ on Thermochemical Heat Storage Capabilities of K₂CO₃

et al. 2022

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This work investigates the reactions occurring in K 2 CO 3 − H 2 O−CO 2 under ambient CO 2 pressures in temperature and vapor pressure ranges applicable for domestic thermochemical heat storage. The investigation shows that depending on reaction conditions, the primary product of a reaction isis preferred far above the equilibrium conditions for the hydration reaction. On the other hand, the formation of double salt is preferred at conditions where hydration reaction is inhibited or impossible, as the thermogravimetric measurements identified a new phase transition line below the hydration equilibrium line. The combined X-ray diffraction, thermogravimetric analysis, and Fourier-transform infrared spectroscopy study indicates that this transition line corresponds to the formation of K 2 CO 3 •2KHCO 3 , which was not observed in any earlier study. In view of thermochemical heat storage, the formation of K 2 CO 3 •2KHCO 3 •(1.5H 2 O) increases the minimum charging temperature by approximately 40 °C. Nevertheless, the energy density and cyclability of the storage material can be preserved if the double salt is decomposed after each cycle.

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Section: Resultsmentioning

confidence: 99%

“…In a large system, the conversion often proceeds through a reaction front. 34 It means that the material close to the inlet of the reactor is exposed to humid air until the entire reactor volume is converted. It has two immediate consequences for the system.…”

Section: Resultsmentioning

confidence: 99%

Impact of Atmospheric CO₂ on Thermochemical Heat Storage Capabilities of K₂CO₃

et al. 2022

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“…Aside from the above two points, efforts have also been made from the perspective of system-level optimisation. For example, the TCES system can be integrated with additional components such as the air-source heat pump [36] and solar collector [40] to reduce the external power consumption during the charging process and thus increase the system efficiency.…”

Section: Introductionmentioning

confidence: 99%

Modelling analysis of a solar-driven thermochemical energy storage unit combined with heat recovery

Zhang

Chen

et al. 2023

Renewable Energy

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“…Previous experimental and numerical studies [9][10] explained the effect of the reactor design on the pressure drop across the TCES reactor bed, and subsequently, the auxiliary power consumption. Mukherjee et al [11] numerically analyzed the thermal performance by varying the aspect ratio of the reactor bed and the air flow rate through the bed. The parametric analysis indicated that the reactor design affects not only the additional power requirement but the thermal performance of the reactor as well.…”

Section: Introductionmentioning

confidence: 99%

Thermochemical Energy Storage Using Radial Flow Annular Reactor for Attaining Lower Pressure Drop

Pujari¹,

Majumdar²,

Saha³

2023

World Congress on Momentum, Heat and Mass Transfer

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Thermochemical energy storage (TCES) is gaining attention for seasonal heat storage and space heating applications due to its high thermal energy density and reliable heat retention over a reasonably long period without significant losses. Salt hydrate and moist air-based solid-gas reactive pairs have been proved to be particularly useful for space heating. The auxiliary power required in the form of electrical energy for blowing the air through the packed bed reactor is an important consideration since it depends on various design parameters of the system. A radial flow annular reactor configuration is proposed in the present study. It shows a 65%-80% reduction in the flow work requirement. The parameters, such as the flow direction and flow rate, need to be optimized for better performance and to ensure lesser flow work requirements.

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Performance evaluation of an open thermochemical energy storage system integrated with flat plate solar collector

Cited by 31 publications

References 42 publications

Impact of Atmospheric CO₂ on Thermochemical Heat Storage Capabilities of K₂CO₃

Impact of Atmospheric CO₂ on Thermochemical Heat Storage Capabilities of K₂CO₃

Modelling analysis of a solar-driven thermochemical energy storage unit combined with heat recovery

Thermochemical Energy Storage Using Radial Flow Annular Reactor for Attaining Lower Pressure Drop

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Performance evaluation of an open thermochemical energy storage system integrated with flat plate solar collector

Cited by 31 publications

References 42 publications

Impact of Atmospheric CO2 on Thermochemical Heat Storage Capabilities of K2CO3

Impact of Atmospheric CO2 on Thermochemical Heat Storage Capabilities of K2CO3

Modelling analysis of a solar-driven thermochemical energy storage unit combined with heat recovery

Thermochemical Energy Storage Using Radial Flow Annular Reactor for Attaining Lower Pressure Drop

Contact Info

Product

Resources

About

Impact of Atmospheric CO₂ on Thermochemical Heat Storage Capabilities of K₂CO₃

Impact of Atmospheric CO₂ on Thermochemical Heat Storage Capabilities of K₂CO₃