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Combined Heat and Mass Transfer Analysis for a Desiccant Unit with LiCl/H₂O solution
페드로 미구엘 아그레다 기론(Pedro Miguel Agreda Giron),정청우(Chung-Woo Jung),강용태(Yong-Tae Kang) 대한설비공학회 2011 대한설비공학회 학술발표대회논문집 Vol.2011 No.7
The analysis presented focuses on the combined heat and mass transfer while the dehumidification of air is done in a packed plate dehumidifier. The coolant flows counter-current with the LiCl/H₂O solution and the air flows in a cross-flow for the humidity absorption of the air. The equilibrium LiCl concentration in the resulting solution is directly related to the relative humidity of the air. The Chilton and Colburn analogy is applied to analyze dehumidification process for a control volume; in addition to calculate the cross flow system, the concept stated by Bowman et al. is applied.
Pedro Miguel Agreda Giron(페드로 미구엘 아그레다 기론),Chung Woo Jung(정청우),Gi Soo Kim(김기수),Bong-Chul Chung(정봉철),Yong Tae Kang(강용태) 대한기계학회 2010 대한기계학회 춘추학술대회 Vol.2010 No.11
Low temperature waste heat is spare in nature and its amount is huge. The heat pump system in this research is based on the hybrid combination of compression and absorption systems in order to recycle various kinds of industrial waste heat effectively. The objective of this paper is to analyze the combined heat and mass transfer for ammonia-water absorption process within a plate heat exchanger. Bubble absorption process is considered with a cocurrent flow between the liquid and the vapor flow. NH₃/H₂O solution is used as the working fluid and water as the cooling fluid. The initial flow conditions applied on the working fluid are crucial on how the system works. It is found that the heat transfer of the cooling water has more influence than that of ammonia solution on the system performance.