Comparative performance of HFC134a- and HCFC22-based vapour absorption refrigeration systems

Experimental studies on R134a-DMAC hot water based vapour absorption refrigeration systems

“…Number of investigators have considered and reported data for R134a as refrigerant with different absorbents for VARS [4][5][6]. It was experimentally found that Dimethyl Acetamide (DMAC) was found to be a very promising solvent for HCFC22 in VARS applications, and felt that the performance of HCFC134a-DMAC solution in VARS should be investigated [7]. Hence this study is focused on the experimental investigations on R134a-DMAC based absorption refrigeration systems.…”

Investigations on R134a–DMAC vapour absorption refrigeration system with add-on components

“…Due to high ozone depletion potential the possibility of making refrigerants with chlorine and bromine was discarded. R134a is a refrigerant which is capable of producing cold at subezero temperatures and can be used even where ammonia cannot be used [3]. DMAC is a good absorbent of R134a.…”

“…Depending on the rectifier efficiency some amount of DMAC escapes to the condenser and results in residual liquid in State points as shown in Fig. 1 Greek letters 3 Void fraction m Dynamic viscosity (kg m À1 s À1 )…”