Dynamic Study of Adsorbers by a New Gravimetric Version of the Large Temperature Jump Method | Sciact - CRIS-system of Boreskov Institute of Catalysis

Dynamic Study of Adsorbers by a New Gravimetric Version of the Large Temperature Jump Method Full article

Journal

Applied Energy
ISSN: 0306-2619 , E-ISSN: 1872-9118

Output data

Year: 2014, Volume: 113, Number: SI, Pages: 1244-1251 Pages count : 8 DOI: 10.1016/j.apenergy.2013.09.005

Tags

Adsorbers optimization, Adsorption cooling system, Gravimetric measurements, Sorption kinetics

Authors

Sapienza Alessio ¹ , Santamaria Salvatore ¹ , Frazzica Andrea ¹ , Freni Angelo ¹ , Aristov Yuri I. ²

Affiliations

1	CNR-ITAE – Istituto di Tecnologie Avanzate per l’Energia ‘‘Nicola Giordano’’, Salita S. Lucia sopra Contesse 5, Messina 98126, Italy
2	Boreskov Institute of Catalysis/Russian Academy of Sciences (BIC/RAS), Pr. Lavrentieva 5, 630090 Novosibirsk, Russia

This paper presents a new experimental setup devoted to measure the ad-/desorption kinetics of an Ad-HEX (adsorbent + heat exchanger) under typical boundary conditions of an Adsorption Heat Transformer (AHT) as well as the results of the first test campaign carried out. The experimental apparatus can be considered as a gravimetric version of the known Large Temperature Jump method. In fact, the dynamic evolution of the uptake during the isobaric ad-/desorption stages is directly measured by a weighing system suitable to work in the range of 5–600 g of sample mass (adsorbent + HEX) with the accuracy ±0.1 g and the time response shorter than 0.1 s The experimental campaign was conducted on an Ad-HEX composed of granules of a commercial SAPO-34 adsorbent placed on a flat type aluminum HEX, under operating conditions reproducing two different thermodynamic cycles (Th = 90 °C, Te = 10 °C, Tc = 30 and 35 °C), typical for adsorption air conditioning. The influence of the grain size (ranging from 0.350 to 2.5 mm) on the adsorption dynamics both in monolayer and multilayer configurations at variable and constant “heat transfer surface/adsorbent mass” ratios (S/m) was studied. The results showed that, for the Ad-HEX configurations tested, the adsorption dynamics can be properly described by a modified Linear Driving Force approach by the use of a single temperature-invariant characteristic time τ. The invariance of the specific cooling power was revealed when the S/m ratio was kept constant (S/m = 1.23 m2/kg). This ratio is found to be a useful parameter for both assessment of the dynamic perfection and optimization of various Ad-HEX configurations.

Sapienza A. , Santamaria S. , Frazzica A. , Freni A. , Aristov Y.I.
Dynamic Study of Adsorbers by a New Gravimetric Version of the Large Temperature Jump Method
Applied Energy. 2014. V.113. NSI. P.1244-1251. DOI: 10.1016/j.apenergy.2013.09.005 WOS Scopus РИНЦ ANCAN OpenAlex

Submitted:	Mar 4, 2013
Accepted:	Sep 3, 2013
Published online:	Sep 27, 2013
Published print:	Jan 1, 2014

Web of science:	WOS:000329952500120
Scopus:	2-s2.0-84884716494
Elibrary:	20509614
Chemical Abstracts:	2013:1739035
Chemical Abstracts (print):	161:292092
OpenAlex:	W2024343852

DB	Citing
Web of science	59
Scopus	65
Elibrary	63
OpenAlex	69