Analytical Performance Evaluation of Hybrid Desiccant Air Conditioning Systems.
Elzahaby, A., Fouad, M., Kabeel, A., Khalil, A., Bassuoni, M. (2020). Analytical Performance Evaluation of Hybrid Desiccant Air Conditioning Systems.. EKB Journal Management System, 33(4), 25-43. doi: 10.21608/bfemu.2020.127811
A. Elzahaby; M. Fouad; A. E. Kabeel; A. Khalil; M. M. Bassuoni. "Analytical Performance Evaluation of Hybrid Desiccant Air Conditioning Systems.". EKB Journal Management System, 33, 4, 2020, 25-43. doi: 10.21608/bfemu.2020.127811
Elzahaby, A., Fouad, M., Kabeel, A., Khalil, A., Bassuoni, M. (2020). 'Analytical Performance Evaluation of Hybrid Desiccant Air Conditioning Systems.', EKB Journal Management System, 33(4), pp. 25-43. doi: 10.21608/bfemu.2020.127811
Elzahaby, A., Fouad, M., Kabeel, A., Khalil, A., Bassuoni, M. Analytical Performance Evaluation of Hybrid Desiccant Air Conditioning Systems.. EKB Journal Management System, 2020; 33(4): 25-43. doi: 10.21608/bfemu.2020.127811

Analytical Performance Evaluation of Hybrid Desiccant Air Conditioning Systems.

MEJ- Mansoura Engineering Journal
Article 4, Volume 33, Issue 4, December 2008, Page 25-43  XML PDF (2.69 MB)
Document Type: Research Studies
DOI: 10.21608/bfemu.2020.127811
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Authors
A. Elzahaby* 1; M. Fouad2; A. E. Kabeel1; A. Khalil3; M. M. Bassuoni4
1Mechanical Power Engineering Department., Faculty of Engineering., Tanta University., Tanta., Egypt
2Mechanical Power Engineering Department., Faculty of Engineering., Cairo University., Cairo., Egypt
3Mechanical Power Engineering Department., Faculty of Engineering., Tanta University., Tanta.,Egypt
4Mechanical Power Engineering Department., Faculty of Enginering., Tanta University., Tanta., Egypt
Abstract
Atheoretical evaluation of a hybrid desiccant air conditioning in post and pre·  cooling arrangements is studied and compared versus the traditional vapor  compression system {VCS- The performance of the rotary desiccant wheel Is  also studied as the heart of the hybrid desiccant cooling system. Lithium chloride IS applied as the working desiccant material In this investigation. A  mathematical model of coupled heal and mass transfer of the desiccant wheel  is presented and numerically solved. The model validity is check against other   work and results are in good agreement. Effect of rotary wheel speed ,  number of transfer units (NTU) and the desiccant surface area to volume on  the performance of the wheel are investigated. The effect of regeneration air  velocity and temperature, slot diameter, evaporator an d condenser  effectiveness and dehumidification effectiveness on the system performance  is also studied. The post cooling hybrid system is found 10 be an energy  efficient system, it saves up to 30% of cooling coil capacity compared to  traditional VCS. The COP of the post cooling arrangement, is nearly twice that  of VCS with reheat. The pre cooling arrangement supplies air at lower dew  point temperature (down to 6°C) with an increase of COP up 10 80%  compared to VCS with reheat. 
Keywords
hybrid desiccant system: vapor compression system: rotary desiccant wheel
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