Title
Experimental study on Egyptian biomass combustion in circulating fluidized bed
Authors
Mahmoud A Youssef, Seddik S Wahid, Maher A Mohamed, Ahmed A Askalany
Publication date
2009/12/31
Journal name
Applied Energy
Volume
86
Issue
12
Pages
2644-2650
Publisher
Elsevier
Description
The present study investigates the combustion of four kinds of biomass in a circulating
fluidized bed. The combustion chamber is a steel cylinder with 145mm inner diameter and
2m height. Tests were conducted on wheat straw, sawdust-wood, cottonseed burs, and
corncobs. Excess air was varied for each fuel. Temperature, heat flux and gas emissions
were measured along the combustion chamber and at the chimney inlet. Results showed
that sawdust-wood produces the highest values of CO emissions (about 3000mg/Nm3). ...
Total citations
Cited by 22
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Scholar articles
Experimental study on Egyptian biomass combustion in circulating fluidized bed
MA Youssef, SS Wahid, MA Mohamed, AA Askalany - Applied Energy, 2009
Cited by 22 - Related articles - All 8 versions
Title
A review on adsorption cooling systems with adsorbent carbon
Authors
Ahmed A Askalany, M Salem, IM Ismail, Ahmed Hamza H Ali, MG Morsy
Publication date
2012/1/31
Journal name
Renewable and Sustainable Energy Reviews
Volume
16
Issue
1
Pages
493-500
Publisher
Pergamon
Description
This study introduces a review for the potential cooling systems which uses carbon materials
as an adsorbent. Also, the adsorption carbon pairs (pairs where the carbon is the adsorbent)
which is still under researches were reviewed. The maximum COP (coefficient of
performance) of the cooling systems was 0.8 for activated carbon/ethanol pair. The study
concluded that the performances of the potential adsorption cooling systems using carbon
are still not satisfied. It was concluded that there is an opportunity for the adsorption ...
Total citations
Cited by 14
Citations per year
Title
An overview on adsorption pairs for cooling
Authors
Ahmed A Askalany, M Salem, IM Ismael, AHH Ali, MG Morsy, Bidyut B Saha
Publication date
2013/3/31
Journal name
Renewable and Sustainable Energy Reviews
Volume
19
Pages
565-572
Publisher
Pergamon
Description
This study is a survey for working adsorbent–refrigerant pairs and the new pairs for potential
applications. The study introduces a classification for the adsorption cooling systems and a
comparison between them based on the employed adsorption pairs. The comparison is on
the basis of the limits of use such as coefficient of performance (COP), driving temperature,
evaporation temperature and specific cooling power (SCP). The study also introduces a
review of the most promising new adsorption pairs. The new pairs are introduced from the ...
Total citations
Cited by 10
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Scholar articles
An overview on adsorption pairs for cooling
AA Askalany, M Salem, IM Ismael, AHH Ali, MG Morsy… - Renewable and Sustainable Energy Reviews,
2013
Cited by 10 - Related articles - All 6 versions
Title
Experimental study on adsorption–desorption characteristics of granular activated
carbon/R134a pair
Authors
Ahmed A Askalany, M Salem, IM Ismail, Ahmed Hamza H Ali, MG Morsy
Publication date
2012/5/31
Journal name
International Journal of Refrigeration
Volume
35
Issue
3
Pages
494-498
Publisher
Elsevier
Description
Experimental runs were done to estimate the adsorption characteristics of granular activated
carbon (GAC)/R134a pair. A laboratory scale test rig was designed and built to run the
experiments. The adsorption capacity of the GAC was studied at different temperatures 25°
C, 35° C, 45° C and 65° C. Pressure and time were recorded during the experiments. The
maximum adsorption capacity was found to be 1.68 kgR134akgcarbon− 1 at 25° C after
1000s. The activation energy and the exponential constant were estimated to be ...
Total citations
Cited by 10
Citations per year
Scholar articles
Experimental study on adsorption–desorption characteristics of granular activated carbon/R134a pair
AA Askalany, M Salem, IM Ismail, AHH Ali, MG Morsy - International Journal of Refrigeration, 2012
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Title
Hybrid adsorption cooling systems–An overview
Authors
Ahmed A Askalany, Bidyut B Saha, Keishi Kariya, Ibrahim M Ismail, Mahmoud Salem, Ahmed HH Ali,
Mahmoud G Morsy
Publication date
2012/10/31
Journal name
Renewable and Sustainable Energy Reviews
Volume
16
Issue
8
Pages
5787-5801
Publisher
Pergamon
Description
With sharp rising global energy demand posing a rapid development in sustainable cooling
systems is required. Hybrid adsorption cooling cycle is considered as one of the sustainable
cooling systems. The present study introduces a survey of hybrid adsorption cooling systems
in order to stand on its fact and clarify the future trend. The survey sectioned the hybrid
adsorption systems into three sections;(i) assisted technology,(ii) application, and (iii) heat
source type. The hybrid system which uses vapor compression with adsorption employing ...
Total citations
Cited by 4
Citations per year
Scholar articles
Hybrid adsorption cooling systems–An overview
AA Askalany, BB Saha, K Kariya, IM Ismail, M Salem… - Renewable and Sustainable Energy Reviews,
2012
Cited by 4 - Related articles - All 7 versions
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Title
Adsorption Isotherms and Heat of Adsorption of Difluoromethane on Activated Carbons
Authors
Ahmed A Askalany, Bidyut B Saha, Kutub Uddin, Takahiko Miyzaki, Shigeru Koyama, Kandadai
Srinivasan, Ibrahim M Ismail
Publication date
2013/9/13
Journal name
Journal of Chemical & Engineering Data
Volume
58
Issue
10
Pages
2828-2834
Publisher
American Chemical Society
Description
Experimental adsorption data of difluoromethane (HFC-32) on activated carbon in powder
(ACP) and fiber (ACF) forms over a range of (25 to 75)° C and pressures up to 1400 kPa are
reported. The data are fitted to Tóth and Dubinin–Astakhov isotherm equations. Adsorbed
phase volume is derived from the data. Isosteric heats of adsorption are extracted, and their
dependence on relative loading and relative pressure is analyzed.
Total citations
Cited by 2
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Adsorption Isotherms and Heat of Adsorption of Difluoromethane on Activated Carbons
AA Askalany, BB Saha, K Uddin, T Miyzaki, S Koyama… - Journal of Chemical & Engineering Data, 2013
Cited by 2 - Related articles - All 3 versions
Title
Adsorption cooling system employing granular activated carbon–R134a pair for
renewable energy applications
Authors
Ahmed A Askalany, Bidyut B Saha, Mahmoud S Ahmed, Ibrahim M Ismail
Publication date
2013/5/31
Journal name
International Journal of Refrigeration
Volume
36
Issue
3
Pages
1037-1044
Publisher
Elsevier
Description
An adsorption cooling system has been designed and built employing granular activated
carbon (GAC)–R134a as adsorbent–refrigerant pair. The performance of the system has
been determined using a cycle simulation computer program written in Fortran. The
performance of the system has been determined varying driving heat source inlet
temperatures and delivered evaporator temperatures. The maximum driving heat source
temperature is kept below 100° C to utilize solar thermal energy or waste heat sources. ...
Total citations
Cited by 2
Citations per year
Scholar articles
Adsorption cooling system employing granular activated carbon–R134a pair for renewable energy
applications
AA Askalany, BB Saha, MS Ahmed, IM Ismail - International Journal of Refrigeration, 2013
Cited by 2 - Related articles - All 3 versions
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Title
Adsorption isotherms and kinetics of HFC410A onto activated carbons
Authors
Ahmed A Askalany, Bidyut B Saha, Ibrahim M Ismail
Publication date
2014/5/29
Journal name
Applied Thermal Engineering
Publisher
Pergamon
Description
Abstract Experimental and theoretical adsorption isotherms and kinetics data of HFC410A
onto activated carbons are reported. Activated carbon powder of type Maxsorb III and
activated carbon fiber of type A-20 have been used as adsorbents. An experimental
apparatus has been designed and built and experimental investigation has been carried out
at five adsorption temperatures in the range of 10-50 C. Experimental data has been fitted
with Tóth and Dubinin-Astakhov (DA) adsorption isotherm models and linear driving force ...
Scholar articles
Adsorption isotherms and kinetics of HFC410A onto activated carbons
AA Askalany, BB Saha, IM Ismail - Applied Therm