SIVI DESİKANT NEM ALMA SİSTEMİNİN TASARIMI VE PERFORMANSININ GELİŞTİRİLMESİ
Yıl 2017,
Cilt: 32 Sayı: 3, 0 - 0, 07.09.2017
Ertuğrul Cihan
,
Barış Kavasoğulları
,
Hasan Demir
Öz
Bu çalışmada, mekanik nem alma sistemlerinin yerine kullanılabilecek bir sıvı desikant nem alma sisteminin tasarımı yapılarak termodinamik analizi yapılmıştır. Tasarlanan ve imalatı yapılan açık sıvı nem alma sisteminin ana parçaları absorber, rejeneratör ve ısı değiştiricileridir. Çalışması yapılan açık sıvı nem alma sisteminde dolgu malzemesi daha önce kullanılmamış polikarbon levhalardan hazırlanmıştır. Polikarbon dolgu malzemeleri kanal açıları 30o olacak şekilde hazırlanmıştır. Sistemde sıvı desikant olarak LiBr-Su (Lityum bromür-su) çözeltisi kullanılarak sistemin nem alma verimi, entalpi verimi ve duyulur ısı oranı parametreleri açısından performans incelemesi yapılmıştır. Analiz sonucunda sıvı desikant nem alma sisteminin nem alma verimi yaklaşık %15 olarak bulunmuştur.
Kaynakça
- Luo Y., Yang H., Lu L., Qi R., A review of the mathematical models for predicting the heat and mass transfer process in the liquid desiccant dehumidifier, Renewable and Sustainable Energy Reviews, 31, 587-599, 2014.
- Mei L., Dai Y.J., A technical review on use of liquid-desiccant dehumidification for air-conditioning application, Renewable and Sustainable Energy Reviews, 12, 662-689, 2008.
- Demir V., Gunhan T., Sencan S.A., Ekren O., Bilgen H., Erek A., Experimental investigation of cooling performance of milk cooling tank with the vapor compressed and solar absorption (LiCl-H2O) cooling system, Journal of the Faculty of Engineering and Architecture of Gazi University, 31 (1), 29-37, 2016.
- Aktaş M., Gönen E., Bay leaves drying in a humidity controlled heat pump dryer, Journal of the Faculty of Engineering and Architecture of Gazi University, 29 (2), 433-441, 2014.
- Atılgan A.İ., Türkmen U., Comparison of exergy and thermoeconomic analysis for variable refrigerant flow (vrf) system with different refrigerants, Journal of the Faculty of Engineering and Architecture of Gazi University, 32 (2), 343-353, 2017.
- Ünal Ş., Erdinç M.T., Kutlu Ç., Thermodynamic analysis of a refrigeration system with double evaporators and ejector, Journal of the Faculty of Engineering and Architecture of Gazi University, 31 (4), 1039-1047, 2016.
- Oruç V., Devecioğlu A.G., Effect on the thermodynamic performance using N20 and R444B refrigerants instead of R22 in a vapor compression refrigeration system, Journal of the Faculty of Engineering and Architecture of Gazi University, 31 (4), 859-869, 2016.
- Ronghui Qi., Lin L., Yu H., Energy performance of solar-assisted liquid desiccant air-conditioning system for commercial building in main climate zones, Energy Conversion and Management, 88, 749-757, 2014.
- Liu J., Zhang T., Liu X., Jiang J., Experimental analysis of an internally-cooled/heated liquid desiccant dehumidifier/regenerator made of thermally conductive plastic, Energy and Buildings, 88, 75-86, 2015.
- Cheng Q., Zhang X., Review of solar regeneration methods for liquid desiccant air-conditioning system, Energy and Buildings, 67, 426-433, 2013.
- Mohan B.S., Tiwari S., Maiya M. P., Experimental investigations on performance of liquid desiccant-vapor compression hybrid air conditioner, Applied Thermal Engineering, 77, 153-162, 2015.
- Khalid Ahmed C.S., Gandhidasan P., Al-Farayedhi A.A., Simulation of a hybrid liquid desiccant based air-conditioning system, Applied Thermal Engineering, 17 (2), 125-134, 1997.
- Gommed K., Grossman G., Experimental investigation of a liquid desiccant system for solar cooling and dehumidification, Solar Energy, 81, 131-138, 2007.
- She X., Yin Y., Zhang X., Thermodynamic analysis of a novel energy-efficient refrigeration system subcooled by liquid desiccant dehumidification and evaporation, Energy Conversion and Management, 78, 286-296, 2014.
- Longo G.A., Gasparella A., Experimental analysis on desiccant regeneration in a packed column with structured and random packing, Solar Energy, 83, 511-521, 2009.
- Potnis S. V., Lenz T. G., Dimensionless mass transfer correlations for packed-bed liquid desiccant contactors, Industrial and Engineering Chemistry, 35, 4185-4193, 1996.
- Jain S., Bansal P.K., Performance analysis of liquid desiccant dehumidification systems, International Journal of Refrigeration, 30, 861-872, 2007.
- Klein S.A., Engineering Equation Solver, Academic Version 9.901, F-Chart Software, 2015.
- Koronaki I.P., Christodoulaki R.I., Papaefthimiou V.D., Rogdakis E.D., Thermodynamic analysis of a counter flow adiabatic dehumidifier with different liquid desiccant materials, Applied Thermal Engineering, 50, 361-373, 2013.
- ASME PTC 19.1-2013, Test Uncertainty: performance test codes, The American Society of Mechanical Engineers, New York, 2014.
- McNevin C., Harrison S.J., Multi-stage air conditioner: Experimental performance and model development, Building and Environment, 114, 45-55, 2017.
- Jain S., Tripathi S., Das R.S., Experimental performance of a liquid desiccant dehumidification system under tropical climates, Energy Conversion and Management, 52, 2461-2466, 2011.