Thermal stability evaluation of selected zeolites for sustainable thermochemical energy storage

Padamurthy, Ankammarao; Nandanavanam, Jalaiah; Parameshwaran, R.

doi:10.1080/15567036.2021.1880502

Cited by 9 publications

(10 citation statements)

References 38 publications

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“…The mass changes due to the desorption and adsorption processes are observed to be slightly more for zeolite 13X against the zeolite 4A. This can be attributed to the favourable structural properties (eg, surface area, pore volume) offered by the zeolite 13X 34 . As can be seen from Figure 7A, the mass changes for zeolite 13X during the desorption process range from 145 to 195 g (average 165 g), which is equivalent to approximately 5%‐7% (average 5.9%) of the initial mass.…”

Section: Resultsmentioning

confidence: 90%

“…This can be attributed to the favourable structural properties (eg, surface area, pore volume) offered by the zeolite 13X. 34 As can be seen from Figure 7A, the mass changes for zeolite 13X during the desorption process range from 145 to 195 g (average 165 g), which is equivalent to approximately 5%-7% (average 5.9%) of the initial mass. The average mass loss stands close to 50% of the maximum possible sorption capacity noticed on the DTG curves (11.6% for heating up to 95 C, shown in Figure 3).…”

Section: Mass Changementioning

confidence: 93%

“…These zeolites were selected based on their favourable energy storage retrieval characteristics. Through characterization study, these materials were found to be suitable for building's space heating applications 34 …”

Section: Methodsmentioning

confidence: 99%

“…Through characterization study, these materials were found to be suitable for building's space heating applications. 34…”

Section: Methodsmentioning

confidence: 99%

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Sustainable and open sorption system for low‐temperature heat storage applications

Padamurthy

Nandanavanam

Parameshwaran

2022

Intl J of Energy Research

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Summary In the present study, an open sorption thermochemical energy storage (TCES) system was developed and investigated experimentally for low‐temperature heat storage applications using zeolites. Desorption and adsorption experiments were carried out sequentially for 15 cycles to study the energy storage and retrieval characteristics. Further, the performance characteristics were analysed to find the system's suitability for intended applications. The charging and discharging processes were carried out respectively at around 95°C and room temperature, for zeolite 13X and zeolite 4A. Zeolite 13X exhibited better average total energy storage density during the desorption and adsorption and they are respectively 129.4 and 57 kWh/m3. The average cumulative energy storage efficiency for zeolite 13X and zeolite 4A are respectively 44.1% and 24%. Similarly, the average exergy efficiency for zeolite 13X and zeolite 4A are respectively 21.5% and 11%. For the tested thermochemical materials (TCMs), the deviations in mass change due to multi‐cycle test‐run was small and hence suitable for long‐term usage without concern about their stability. The present study has demonstrated the technical competence in utilizing the energy sources (eg, solar energy, industrial waste heat) towards low‐temperature heat storage applications, viz. building's space heating and water heating.

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Section: Resultsmentioning

confidence: 90%

Section: Mass Changementioning

confidence: 93%

Section: Methodsmentioning

confidence: 99%

“…Through characterization study, these materials were found to be suitable for building's space heating applications. 34…”

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Sustainable and open sorption system for low‐temperature heat storage applications

Padamurthy

Nandanavanam

Parameshwaran

2022

Intl J of Energy Research

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“…Development of advanced technologies for storing the waste heat, excess renewable electricity and solar thermal energy is crucial to reduce the reliance on fossil fuels. 1 Among the available technologies, sensible and latent heat storage is well emerged where significant advances were achieved. On the other hand, thermochemical heat storage (THS) is an emerging heat storage method, attracting attention due to its merits of providing higher energy storage density ( E d ) and long-term heat storage opportunity.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of a solar-charged sorption thermal battery

Nejhad

Aydın

2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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In the present study, an integrated solar-driven sorption energy storage unit was investigated under real climatic conditions in Famagusta, North Cyprus. Vermiculite–CaCl2 was selected as the working material due to its high energy density, good cyclic ability and low cost. Three series of charging–discharging experiments were performed employing the developed solar-driven thermochemical heat storage system. The discharging tests were performed during the night for duration of 5 h. During the discharging experiments, temperature and relative humidity of inlet air were between 21 and 24°C and 80% and 90%, respectively. Under these conditions, the average energy output over three cycles was found to be 2.1 kWh, with an average energy storage density of 156 kWh/m3. A manufactured parabolic solar concentrator was utilized to provide the required thermal energy in the charging process. Hence, the average surface temperature of the reactor was in the range of 78°C–83°C. The average solar energy supply and desorption energy utilized in the charging process were 5.56 and 1.75 kWh, respectively. The rate of moisture desorption was 6.5 g/min while the thermo-cyclic efficiency was 38%.

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Assessment of selected salt hydrates for thermochemical energy storage applications

Padamurthy

Nandanavanam

Parameshwaran

2022

Materials Today: Proceedings

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Thermal stability evaluation of selected zeolites for sustainable thermochemical energy storage

Cited by 9 publications

References 38 publications

Sustainable and open sorption system for low‐temperature heat storage applications

Sustainable and open sorption system for low‐temperature heat storage applications

Experimental investigation of a solar-charged sorption thermal battery

Assessment of selected salt hydrates for thermochemical energy storage applications

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