Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5017041 | International Journal of Refrigeration | 2017 | 31 Pages |
Abstract
A diffusion absorption refrigerator (DAR) operating with mixed fluoride refrigerants was built to obtain low refrigerating temperature at low generating temperature. Two groups of mixed fluoride refrigerants, R23/R134a and R23/R32/R134a, were tested experimentally. The N,N-dimethylformamide (DMF) and helium were used as the absorbent and inert gas, respectively. For the DAR with R23/R134a, the refrigerating temperature was not obviously influenced by the concentration of R23 in the mixed refrigerant vapor or the amounts of helium. For the DAR with R23/R32/R134a, an optimal concentration of R32 in the mixed refrigerant vapor and an optimal pressure were both found to achieve the lowest refrigerating temperature which was â28.8â°C at a generating temperature of 106.9â°C, and a refrigerating temperature of â23.7â°C was obtained at an extraordinarily low generating temperature of 83.3â°C. It showed the promising potentials of DAR operating with mixed fluoride refrigerants in applications of low temperature refrigeration and efficient utilization of the low-grade thermal energy.
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Physical Sciences and Engineering
Engineering
Mechanical Engineering
Authors
S.K. Wang, J. Wang, Q. Wang, Y.L. Wang, J.Y. Zhao, G.M. Chen,