Effect of solution temperature and absorber pressure in R134a–DMAC system using horizontal tubular absorbers

L. Harikrishnan, Shaligram Tiwari and M.P. Maiya

International Journal of Low-Carbon Technologies, 2011, vol. 8, issue 1, 20-28

Abstract: Investigations are carried out to study the heat and mass transfer characteristics of a falling film horizontal absorber by employing a two-dimensional numerical technique. The potential refrigerant, R134a (1,1,1,2-tetrafluroethane), is absorbed by the falling film of the R134a–DMAC (dimethylacetamide) solution. The variations of performance parameters along the tube surface are presented for different solution inlet temperatures and absorber pressures. The mass flux at the interface is observed to be higher at higher solution temperature and absorber pressure. The variation of the interface to bulk fluid and bulk fluid to wall heat transfer coefficient, overall heat transfer coefficient and mass transfer coefficient are studied for different solution temperatures and absorber pressures. Copyright , Oxford University Press.

Date: 2011
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