Performance evaluation of simple and heat recovery adsorption cooling system using measured NH 3 sorption characteristics of halide salts

Sharma, Rakesh; Kumar, E. Anil

doi:10.1016/j.applthermaleng.2017.03.085

Cited by 22 publications

(5 citation statements)

References 25 publications

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“…The

{COP}_{\max}

values are in the order of BaCl 2 > BaCl 2 ‐ENG > SrCl 2 ‐ENG > CaCl 2 > SrCl 2 > MnCl 2 > CaCl 2 ‐ENG > MnCl 2 ‐ENG. The theoretical COP values of all the composite‐based ACS is lower than its pure form of salt‐based ACS, except for SrCl 2 , due to SrCl 2 having a reaction enthalpy of 66.6 kJ/mol, 9 and the composite has 47.23 kJ/mol, 17 which is lower than the pure SrCl 2 reaction enthalpy. However, the actual performance of composite‐based ACS is better due to a decrease in adsorption and desorption process time, resulting in an overall cycle time reduction, attributed to improved heat transfer characteristics of the salt.…”

Section: Resultsmentioning

confidence: 88%

“…Numerous gas-solid pairs, including water-silica gel, water-zeolite, carbon dioxide-activated carbon, ammonia-activated carbon, and ammonia-halide salts, are gaining popularity due to their high sorption capacity, increased availability, and a wide range of working temperatures. 7,8 Sharma and E. Anil 9 investigated the theoretical performance of adsorption thermodynamic cycles by measuring the sorption characteristics of various halide salts. It was discovered that the coefficient of performance of a CaCl 2 adsorbent-based simple ACS is greater than that of MnCl 2 , SrCl 2 , and FeCl 2 adsorbent beds.…”

mentioning

confidence: 99%

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Thermodynamic analysis of adsorption cooling system using composite halide salts

Anilkumar,

Sharma,

Kumar

2024

Energy Storage

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In the development of an adsorption cooling system, it has been observed that halide composites exhibit less hysteresis than pure halide salts. Therefore, it is important to thermodynamically analyze the composite salt‐based adsorption cooling system (ACS) to understand its performance. In this study, we conduct a thermodynamic first‐law and second‐law analysis of ACS using reactive salts such as BaCl2, BaCl2‐ENG, CaCl2‐ENG, SrCl2‐ENG, and MnCl2‐ENG, with ammonia as the refrigerant. We compared the coefficient of performance (COP) with that of a pure halide salt‐based ACS. The theoretical COP of the ACS at a mass ratio of 4 is estimated as 0.45, 0.4, 0.27, 0.37, and 0.22, and the second‐law efficiency is estimated as 44.28%, 38.76%, 20.71%, 16.26%, and 6.92% for BaCl2, BaCl2‐ENG, CaCl2‐ENG, SrCl2‐ENG, and MnCl2‐ENG reactive salts, respectively. Among the different salts, BaCl2 shows the highest COP. However, the COP values are lower than the maximum theoretical coefficient of performance (COPmax) due to the sensible mass of the reactor, and COP values decrease with an increase in the mass ratio due to an increase in sensible mass. It is noteworthy that the COP of the pure salt‐based ACS is higher than that of the composite salt‐based ACS because the ammonia uptake of pure salt is greater than that of the composite salt.

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“…The

{COP}_{\max}

Section: Resultsmentioning

confidence: 88%

mentioning

confidence: 99%

Thermodynamic analysis of adsorption cooling system using composite halide salts

Anilkumar,

Sharma,

Kumar

2024

Energy Storage

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“…Sharma et al [16] in their work analysed sorption materials in the form of halide salts such as CaCl 2 , SrCl 2 , MnCl 2, and FeCl 2 . Of the salts analysed, only two selected salts operate at desorption temperatures of 80-100 • C. Nevertheless, it is the CaCl 2 salt that shows the best adsorption performance among the analysed compounds.…”

Section: Adsorbents and Their Influence On A System Performancementioning

confidence: 99%

Adsorbents, Working Pairs and Coated Beds for Natural Refrigerants in Adsorption Chillers—State of the Art

et al. 2021

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Adsorption refrigeration systems are promising, sustainable solutions for many cooling applications. The operating range and the performance of an adsorption cooling cycle are strongly dependent on the properties of adsorbents, adsorbates, and bed coatings. Therefore, further research and analysis may lead to improved performance of adsorption coolers. In this paper, studies on working pairs using natural refrigerants and the properties of adsorbent coatings were reviewed. The selected working pairs were then thermodynamically characterised and ranked in terms of refrigerant evaporation temperature values. This was found to be a key parameter affecting the applicability of a given adsorbent/adsorbate pair and the value of SCP (Specific Cooling Power), COP (Coefficient of Performance) parameters, which are now commonly used comparison criteria of adsorption chillers. In the analysis of the coating studies, the focus was on the effect of individual parameters on the performance of the cooling system and the effect of using coated beds compared to packed beds. It was found that a fundamental problem in comparing the performance of different cooling systems is the use of different operating conditions during the tests. Therefore, the analysis compares the performance of the systems along with the most important thermodynamic cycle parameters for the latest studies.

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“…On the other hand, thermal absorption, in which heat is transformed across different substrates (e.g., from liquid bulk water or NH 3 to vapor sorbents), is nowadays gaining momentum. [12][13][14] The cooling is produced by the phase change of the liquids and the sorbents are regenerated to complete a cycle. The thermal absorption is capable of on-demand and targeted cooling with more flexibility in controlling its cooling power and thus performance than sky cooling.…”

Section: Introductionmentioning

confidence: 99%

Conversion and storage of solar energy for cooling

Wang

Shi

Zhang

et al. 2022

Energy Environ. Sci.

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Performance evaluation of simple and heat recovery adsorption cooling system using measured NH 3 sorption characteristics of halide salts

Cited by 22 publications

References 25 publications

Thermodynamic analysis of adsorption cooling system using composite halide salts

Thermodynamic analysis of adsorption cooling system using composite halide salts

Adsorbents, Working Pairs and Coated Beds for Natural Refrigerants in Adsorption Chillers—State of the Art

Conversion and storage of solar energy for cooling

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