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Comparing absorption characteristics of R134a into DMAC and DMF for a falling film horizontal tube absorber.
Number: pap. ID: 364
Author(s) : YADA K. K., HARIKRISHNAN L., TIWARI S., et al.
Summary
The present work is a comparative study of heat and mass transfer behaviour during the absorption of R134a (1, 1, 1, 2 tetrafluroethane) vapour into absorbents, DMAC (N, N-Dimethylacetamide) and DMF (N, N-Dimethylformamide). Initially, the authors have investigated the heat and mass transfer characteristics for absorption of R134a into DMF for a falling film horizontal tubular absorber by employing a two-dimensional numerical technique. The related governing equations are solved using a developed computer code in MATLAB. Then, a comparison of absorption characteristics of R134a-DMAC and R134a-DMF is made. For the mean value of operating condition considered, the R134a-DMF solution absorbs more due to higher diffusion coefficient value of DMF than DMAC. The mass transfer coefficient is observed to decrease at a steeper rate at the entrance of the first tube for both working fluids, after which gradual decrease in the mass transfer coefficient is observed further downstream.
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Details
- Original title: Comparing absorption characteristics of R134a into DMAC and DMF for a falling film horizontal tube absorber.
- Record ID : 30002726
- Languages: English
- Source: Proceedings of the 23rd IIR International Congress of Refrigeration: Prague, Czech Republic, August 21-26, 2011. Overarching theme: Refrigeration for Sustainable Development.
- Publication date: 2011/08/21
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