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International Journal of Scientific and Engineering Research
ISSN Online 2229-5518
ISSN Print: 2229-5518 8    
Website: http://www.ijser.org
scirp IJSER >> Volume 3,Issue 8,August 2012
Experimental Analysis on the use of Mango nuts as Adsorbents for Solid Adsorption Refrigeration
Full Text(PDF, )  PP.758-766  
A. Kwaghger, E.I. Kuchaand H.A. Iortyer
:Methanol, Mango nuts, Experimental analysis, COP, Experimental rig
The performance analysis (stability of desorption and adsorption equilibrium, refrigeration effect and the COP) were determined using MNAC and compared with CAC at 1.0, 0.8, 0.6 and 0.4g/g initial adsorbate capacity under same experimental conditions and were found comparable with each other. MNAC and CAC both exhibited stable desorption and adsorption equilibrium. The refrigeration effect achieved was only suitable for chilling water from 28 - 20, 28- 19, 28- 19.5 and 28- 20oC for MNAC- methanol and 28- 19, 28- 18, 28- 19 28- 19.50C for CAC- methanol at the studied initial adsorbate capacities, this low performance was linked to vacuum control, low thermal conductivity necessitating low refrigerant desorption quantity with consequent effect on the quantity re- adsorbed at the evaporator that cause cool production. The COPs for MNAC- methanol at the investigated adsorbate capacities were 0.079, 0.044, 0.028 and 0.030. Those for CAC- methanol were 0.074, 0.029, 0.019 and 0.017 respectively, this compared favourably with other works. Mango nuts activated carbon can thus be suitable replacement as activated carbon for adsorption refrigeration application.
[1]. Houghton, J.T., Y. Ding, D. J.Griggs, M. Noguer, P. J. VanderLinden, X. Dai, K. Maskell, C. A. Johnson. (2001). Climate Change 2001: The Scientific Basis, Published for the Intergovernmental Panel on Climate Change, Cambridge University Press.

[2]. Saha, B. B., S. Koyama, T. Kashiwagi, A. Akisawa, K.C. Ng, H.T. Chua. (2003). Waste heat driven dualmode, multi-stage, multi-bed regenerative adsorption system.International J. of Refrigerant 26, 749–757.

[3]. Okonogi, S.,C. Duangrat, S. Anuchpreeda, S. Tachakittirungrod and S. Chowwanapoonpohn. (2007). Comparison of antioxidant capacities and cytotoxicities of certain fruit peels.Food Chem. 10. 839- 846.

[4]. Kwaghger, A., E. I. Kucha and H. A. Iortyer. (2012). Optimization of conditions for the preparation of activated carbon from Mango nuts using CaCl2.Int. J. of Environment and Bioenergy. 1(3): 146-16.

[5]. Li, M.., H.B. Huang, R.Z. Wang, W.D. Cai and W.M. Yang. (2004). Experimental study on adsorbent of activated carbon with refrigerant of methanol and ethanol for solar ice maker.Renewable Energy.29: 2235- 2244.

[6]. Wang, L.W., R.Z. Wang, Z.S. Lu, C.J. Chen, K. Wang, and J.Y. Wu. (2006). The performance of two adsorption ice making test units using activated carbon and carbon composite as adsorbent. Carbon. 44: 2671-2680.

[7]. Follin, S. (1996). Influence of microporous characteristics of activated carbon on the performance of adsorption cycle for refrigeration. Ind. and Eng. Chem. Research.Vol 35 pp 2632- 2639.

[8]. Anyanwu, E.E. (2003). Thermophysical properties of activated carbon methanol , adsorbent/ adsorbate pair for adsorption refrigeration application. J. Sci. Eng. Tech. 10 (2): 4996- 5006.

[9]. Li, M and R. Z. Wang. (2002). A study of the effect of collector and environmental papameters on the performance of a solar powered solid adsorption refrigerator.Renewable Energy.27: 369- 382.

[10]. Leite, A and M. Daguenet (2000).Performance of a new solid adsorption ice maker with solar energy regeneration.Energy Conversion and Management.41:1625– 47.

[11]. Anyanwu, E. E. and C. I. Ezekwe. (2003). Design, construction and test run of solid adsorption solar refrigerator using activated carbon/methanol as adsorbent/ adsorbate pair. Energy Conservation and Management. 44: 2879-2892.

[12]. Boubakri, A. (1992) Experimental studies of adsorptive solar powered ice makers in Agadia (Morocco) 1 and 2.Renewable Energy 2: 7- 22.

[13]. Hu, E.J. (1997). The study of thermal decomposition of methanol in solar powered adsorption refrigeration systems.Solar Energy Vol. 62, No. 5, pp325- 329.

[14]. Yuan, Z.H. (1988). Charcoal methanol adsorption refrigeration. M. Eng. Thesis. Asian Institute of Technology, Bangkok.

[15]. Gacciolaa, G and G. Restuccia. (1994). Progress on adsorption heat pump.Heat Recovery System & CHP 14(4): 409- 20

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