Reallocation of adsorption and desorption times for optimisation of cooling cycles

Aristov, Yu. I.; Ovoshchnikov, D.S.; Freni, Angelo; Restuccia, G.

doi:10.1016/j.ijrefrig.2010.07.019

Cited by 132 publications

(23 citation statements)

References 16 publications

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“…Zeolite coated concept (5 plates) Finned flat tube þ loose grains [10] Finned tube þ consolidated [11] Exchanger Obtained results, in terms of temperature distribution are showed in Fig. 10.…”

Section: Exchanger Typementioning

confidence: 97%

Innovative zeolite coatings on graphite plates for advanced adsorbers

Vasta

Giacoppo

Calabrese

et al. 2014

Applied Thermal Engineering

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Section: Exchanger Typementioning

confidence: 97%

Innovative zeolite coatings on graphite plates for advanced adsorbers

Vasta

Giacoppo

Calabrese

et al. 2014

Applied Thermal Engineering

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“…Not only that in proposed case, it was observed that adsorption time is more than twice longer than the desorption time as well as the sum of desorption time, pre-cooling and pre-heating time. Aristov et al [31] also gave similar practical recommendations to manage cooling cycles with non-equal durations of adsorption and desorption time. Due to the longer adsorption time the total adsorption of the proposed cycle is higher than that of the the former cycle.…”

Section: Proposed Formermentioning

confidence: 99%

Design and Performance of an Innovative Four-Bed, Three-Stage Adsorption Cycle

et al. 2013

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Abstract:The design of a four-bed three-stage adsorption cycle has been proposed to reduce the volume of the six-bed three-stage adsorption cycle. A simulation model for the proposed innovative cycle was developed to analyse the influence of cycle time on the system performance identifying the specific cooling power (SCP) and coefficient of performance (COP). A particle swarm optimization (PSO) technique was used to optimize the cycle time enabling us to maximize the SCP. PSO results showed that the optimal cycle time was decreased with heat source temperature and SCP value was proportional to heat source temperature. It was found that the proposed cycle could be driven by waste heat as low as 40 °C, along with coolant at 30 °C. Comparative study of optimized result indicated that the proposed cycle increased the performance significantly over a whole range of temperatures from 40 to 70 °C and reduced two adsorbent beds, compared to the six-bed three-stage cycle. Keywords

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“…For instance, lithium nitrate was introduced into silica gel [76] and vermiculite [75] matrices and tested in typical AHS cycle (Fig. 5).…”

Section: Adsorptive Inter-seasonal Heat Storagementioning

confidence: 99%

“…This can be obtained by using new advanced heat exchangers [78,81,90], heat pipes [91], coating a heat exchanger fins with an adsorbent [60,61], etc. ; -optimization of AHS cycles due to a proper choice of durations of isobaric stages [76], heat and mass recovery [92], cascade cycles [93], etc. ; -improvement of AHS hardwire [94], first of all, an evaporator that operates at low temperature and pressure [88].…”

Section: Future Randd For Ahs Optimizationmentioning

confidence: 99%

Current progress in adsorption technologies for low-energy buildings

Aristov

2015

Future Cities and Environment

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More than half of the world's population currently lives in cities. An essential constituent of future sustainable cities is energy efficient and ecologically sound buildings which ensure high levels of comfort and convenience without reducing the standards of living. At present, a significant part of primary fossil fuels is spent for heating/cooling of buildings, thus, greatly contributing to total GHG emissions. In this paper, typical heat losses in dwellings are considered taking the United Kingdom and the Russian Federation as examples. The role of adsorption-based technologies for more rational use of heat in buildings is discussed. Fundamentals of inter-seasonal adsorptive heat storage (AHS) are briefly considered. A tentative upper limit of the AHS storage density is estimated. Current practice of inter-seasonal AHS and novel smart adsorbents promising for this emerging technology are overviewed. Since a portion of the heat losses in ventilation system significantly increases in modern buildings, a new approach to regenerating heat and moisture in this system is discussed. Finally, optimization trends of the AHS in buildings are briefly considered.

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Reallocation of adsorption and desorption times for optimisation of cooling cycles

Cited by 132 publications

References 16 publications

Innovative zeolite coatings on graphite plates for advanced adsorbers

Innovative zeolite coatings on graphite plates for advanced adsorbers

Design and Performance of an Innovative Four-Bed, Three-Stage Adsorption Cycle

Current progress in adsorption technologies for low-energy buildings

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