Absorbsiyonlu (LiBr-su) Nem Alma Sisteminin Isıl Performans Değerlerinin Deneysel Olarak Araştırılması

Bu çalışmada, mekanik nem alma sistemlerinin yerine kullanılabilecek, nem alma ve rejenerasyon kolonlarında, daha önce kullanılmamış, polikarbonat dolgu malzemesi kullanılan bir açık sıvı nem alma sisteminin deneysel olarak araştırılmıştır. Sıvı desikant olarak kütlece %45'lik LiBr-su (Lityum bromürsu) çözeltisi kullanılan sistemde dolgu malzemeleri, 6 mm kalınlıklarındaki polikarbonat levhaların 30°, 45° ve 60° kanal açısı oluşturacak şekilde kesilmesiyle oluşturulmuştur. Sözü geçen kanal açılarının, hava hızının ve sıvı desikant debisinin sistemin nem alma verimine, elektriksel ve ısıl performans katsayısına etkisi incelenmiştir

Experimental Investigation of Thermal Performance Values of Absorption (LiBr-aq) Dehumidification System

In this study, an open liquid desiccant dehumidification system, using polycarbonate packing material in dehumidification and regenerator columns, has not been used previously, which can be used instead of mechanical dehumidification systems, was experimentally investigated. The packing material of the system, using 45 mass percent LiBr-aq (Lithium bromide-water) solution as desiccant, was formed by cutting polycarbonate sheets 6 mm thickness to form 30°, 45° and 60° channel angles. The effect of these channel angles, air velocity and liquid desiccant flow rate on dehumidification efficiency, electrical and thermal coefficient of performance were investigated

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  • 1. Xu, M., Duan, Y., Xin, F., Huai, X., Li, X., 2014. Design of an Isopropanol-acetoneHydrogen Chemical Heat Pump with Exothermic Reactors in Series, Applied Thermal Engineering, 71, p. 445-449.
  • 2. Zhai, X. Q., Wang, R. Z., 2009. A Review for Absorbtion and Adsorbtion Solar Cooling Systems in China, Renewable and Sustainable Energy Reviews, 13, p. 1523-1531.
  • 3. Yadav, Y. K., Kaushik, S. C., 1991. Psychrometric Techno-economics Assessment and Parametric Studies of Vapor-Compression and Solid/liquid Desiccant Hybrid Solar Space Conditioning System, Heat Recovery Systems & CHP, 11, p. 563-572.
  • 4. Khalid Ahmed, C. S., Gandhidasan, P., AlFarayedhi, A. A., 1997. Simulation of a Hybrid Liquid Desiccant Based Air-conditioning System, Applied Thermal Engineering, 17, p. 125-134,
  • 5. Desiccant Cooling: State-of-the-Art Assesment” Erişim adresi: http://web.ornl.gov/sci/ees/etsd/btric/eere_resea rch_reports/thermally_activated_technologies/d esiccant_systems/performance_evaluations/nrel _tp_254_4147/nrel_tp_254_4147.pdf Erişim Tarihi: 22.11.2016.
  • 6. Lof, G. O. G., 1955. Cooling with solar energy, Congress on solar energy, p. 171-189, TucsonArizona.
  • 7. Factor, H. M., Grossman, G. A., 1980. Packed Bed Dehumidifier/regenerator for Solar Air Conditioning with Liquid Desiccants, Solar Energy, 24, p. 541-550.
  • 8. Longo, A. G., Gasparella A., 2009. Experimental Analysis on Desiccant Regeneration in a Packed Column with Structure and Random Packing, Solar energy, 83, p. 511-521.
  • 9. Öberg, V., Goswami, D. Y., 1998. A Review of Liquid Desiccant Cooling, Advances in Solar Energy, 12, p. 431-470.
  • 10. Salarian, H., Ghadamian, H., Assadi K. M., Ataei, A., 2011. An Experimental and Modeling Study of a Dehumidification Tower, International Journal of the Physical Sciences, 6, 12, p. 2852-2860.
  • 11. Poling, B. E., Prausnitz, J. M., O’Connell, J. P., 2001. The Properties of Gases and Liquids, 5th Edition, Appendix A, McGraw-Hill, New York.
  • 12. Koronaki, I. P., Christodoulaki, R. I., Papaefthimiou, V. D., Rogdakis, E. D., 2013. Thermodynamic Analysis of a Counter Flow Adiabatic Dehumidifier with Different Liquid Desiccant Materials, Applied Thermal Engineering, 50, p. 361-373.
  • 13. ASME PTC 19.1-2013, 2014. Test Uncertainty: Performance Test Codes, The American Society of Mechanical Engineers, New York.
Çukurova Üniversitesi Mühendislik-Mimarlik Fakültesi Dergisi-Cover
  • ISSN: 1019-1011
  • Yayın Aralığı: Yılda 4 Sayı
  • Başlangıç: 1986
  • Yayıncı: ÇUKUROVA ÜNİVERSİTESİ MÜHENDİSLİK FAKÜLTESİ