Dynamics of Water Vapour Adsorption by a Monolayer of Loose AQSOA™-FAM-Z02 Grains: Indication of Inseparably Coupled Heat and Mass Transfer Full article
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Energy
ISSN: 0360-5442 , E-ISSN: 1873-6785 |
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| Output data | Year: 2016, Volume: 114, Pages: 767-773 Pages count : 7 DOI: 10.1016/j.energy.2016.08.056 | ||||
| Tags | Adsorption chillers, Adsorption dynamics, Dynamic optimization, Heat & mass transfer, Specific cooling power | ||||
| Authors |
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| Affiliations |
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Funding (2)
| 1 | Federal Agency for Scientific Organizations | V.46.2.4. |
| 2 | Russian Foundation for Basic Research | 14-08-01186 |
Abstract:
Dynamics of water adsorption in an adsorption chiller (AC) determines the specific cooling power and the AC size. The dynamics, in its turn, strongly depends on the configuration of an “adsorbent – heat exchanger” (Ad-HEx). Here we considered the simplest, monolayer, configuration of the Ad-HEx and studied the water ad-/desorption dynamics as a function of the grain size (0.2–2.1 mm), temperature drop (16–36 °C), and pressure (7–47 mbar) for a commercial adsorbent AQSOA™-FAM-Z02. The dynamics was measured by a Volumetric Large Temperature Jump method under typical conditions of isobaric stages of real AC cycle.
It is found that the initial part of all kinetic curves is exponential and can be described by a single characteristic time τ. This time depends on the grain size R as τ ∼ Rα, where the index α is constant over the whole range of the grain sizes, and its value is 1.33 and 1.20 for adsorption and desorption runs, respectively. The α-constancy may indicate an inseparable coupling of heat and mass transfer in the monolayer configuration of AQSOA™-FAM-Z02 adsorbent bed. For grains of about 2 mm size, quite acceptable initial power (>2 kW/kg) is obtained. Thus, the monolayer configurations may result in fast adsorption dynamics, reasonable specific power and compact AC units.
Cite:
Girnik I.S.
, Aristov Y.I.
Dynamics of Water Vapour Adsorption by a Monolayer of Loose AQSOA™-FAM-Z02 Grains: Indication of Inseparably Coupled Heat and Mass Transfer
Energy. 2016. V.114. P.767-773. DOI: 10.1016/j.energy.2016.08.056 WOS Scopus РИНЦ ANCAN OpenAlex
Dynamics of Water Vapour Adsorption by a Monolayer of Loose AQSOA™-FAM-Z02 Grains: Indication of Inseparably Coupled Heat and Mass Transfer
Energy. 2016. V.114. P.767-773. DOI: 10.1016/j.energy.2016.08.056 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
| Submitted: | Nov 6, 2015 |
| Accepted: | Aug 16, 2016 |
| Published online: | Aug 25, 2016 |
| Published print: | Nov 1, 2016 |
Identifiers:
| Web of science: | WOS:000387194800060 |
| Scopus: | 2-s2.0-84983548882 |
| Elibrary: | 27140545 |
| Chemical Abstracts: | 2016:1410462 |
| Chemical Abstracts (print): | 172:283929 |
| OpenAlex: | W2509641276 |