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Design improvements for a collector/generator/adsorber of a solid adsorption solar refrigerator

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  • Ogueke, N.V.
  • Anyanwu, E.E.

Abstract

A study of the effects of different collector design parameters on the performances of a solar powered solid adsorption refrigerator is presented. The refrigerator uses activated carbon/methanol as the adsorbent/refrigerant pair. The study was undertaken using a computer simulation program developed from a transient analysis of the system. The parameters tested are the collector plate emissivity/absorptivity combination, adsorbent packing density, tube spacing, outer tube outside diameter, adsorbent thermal conductivity, heat transfer coefficient at adsorbent/tube interface, and adsorbent tube/collector plate materials combination. Two performance indicators namely, condensate yield and coefficient of performance (COP) were used in the study as figures of merit. A multiple regression technique was used to correlate the performance indicators with the collector parameters through a quadratic relation. Consequently an objective function, suitable for selecting optimal values of the parameters is defined, subject to specified constraints. Selecting the COP as the preferred indicator parameter, optimization was then carried out. Improvements in the ranges of 29–38% for COP and 26–35% for condensate yield were obtained with optimal choices of tube spacing, adsorbent packing density and collector plate/adsorbent tube material combinations.

Suggested Citation

  • Ogueke, N.V. & Anyanwu, E.E., 2008. "Design improvements for a collector/generator/adsorber of a solid adsorption solar refrigerator," Renewable Energy, Elsevier, vol. 33(11), pages 2428-2440.
  • Handle: RePEc:eee:renene:v:33:y:2008:i:11:p:2428-2440
    DOI: 10.1016/j.renene.2008.02.007
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    References listed on IDEAS

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    1. Eltom, O.M.M. & Sayigh, A.A.M., 1994. "A simple method to enhance thermal conductivity of charcoal using some additives," Renewable Energy, Elsevier, vol. 4(1), pages 113-118.
    2. Anyanwu, E.E. & Ogueke, N.V., 2005. "Thermodynamic design procedure for solid adsorption solar refrigerator," Renewable Energy, Elsevier, vol. 30(1), pages 81-96.
    3. Jing, Hu & Exell, R.H.B., 1994. "Simulation and sensitivity analysis of an intermittent solar-powered charcoal/methanol refrigerator," Renewable Energy, Elsevier, vol. 4(1), pages 133-149.
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    2. Hassan, H.Z. & Mohamad, A.A., 2013. "Thermodynamic analysis and theoretical study of a continuous operation solar-powered adsorption refrigeration system," Energy, Elsevier, vol. 61(C), pages 167-178.
    3. Mahesh, A., 2017. "Solar collectors and adsorption materials aspects of cooling system," Renewable and Sustainable Energy Reviews, Elsevier, vol. 73(C), pages 1300-1312.
    4. Alahmer, Ali & Ajib, Salman & Wang, Xiaolin, 2019. "Comprehensive strategies for performance improvement of adsorption air conditioning systems: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 99(C), pages 138-158.
    5. N’Tsoukpoe, Kokouvi Edem & Yamegueu, Daniel & Bassole, Justin, 2014. "Solar sorption refrigeration in Africa," Renewable and Sustainable Energy Reviews, Elsevier, vol. 35(C), pages 318-335.
    6. Sah, Ramesh P. & Choudhury, Biplab & Das, Ranadip K., 2016. "A review on low grade heat powered adsorption cooling systems for ice production," Renewable and Sustainable Energy Reviews, Elsevier, vol. 62(C), pages 109-120.
    7. Habib, Khairul & Choudhury, Biplab & Chatterjee, Pradip Kumar & Saha, Bidyut Baran, 2013. "Study on a solar heat driven dual-mode adsorption chiller," Energy, Elsevier, vol. 63(C), pages 133-141.
    8. Hassan, H.Z. & Mohamad, A.A. & Bennacer, R., 2011. "Simulation of an adsorption solar cooling system," Energy, Elsevier, vol. 36(1), pages 530-537.
    9. Sah, Ramesh P. & Choudhury, Biplab & Das, Ranadip K., 2015. "A review on adsorption cooling systems with silica gel and carbon as adsorbents," Renewable and Sustainable Energy Reviews, Elsevier, vol. 45(C), pages 123-134.
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    11. Fernandes, M.S. & Brites, G.J.V.N. & Costa, J.J. & Gaspar, A.R. & Costa, V.A.F., 2014. "Review and future trends of solar adsorption refrigeration systems," Renewable and Sustainable Energy Reviews, Elsevier, vol. 39(C), pages 102-123.
    12. Hassan, H.Z. & Mohamad, A.A., 2012. "A review on solar-powered closed physisorption cooling systems," Renewable and Sustainable Energy Reviews, Elsevier, vol. 16(5), pages 2516-2538.
    13. Afshar, O. & Saidur, R. & Hasanuzzaman, M. & Jameel, M., 2012. "A review of thermodynamics and heat transfer in solar refrigeration system," Renewable and Sustainable Energy Reviews, Elsevier, vol. 16(8), pages 5639-5648.
    14. Goyal, Parash & Baredar, Prashant & Mittal, Arvind & Siddiqui, Ameenur. R., 2016. "Adsorption refrigeration technology – An overview of theory and its solar energy applications," Renewable and Sustainable Energy Reviews, Elsevier, vol. 53(C), pages 1389-1410.

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