HCFC22-based absorption cooling systems, part III: Effects of different absorbers and condenser temperatures
✍ Scribed by M. Fatouh; S. Srinivasa Murthy
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 668 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0363-907X
No coin nor oath required. For personal study only.
✦ Synopsis
Generally in a vapour absorption refrigeration system (VARS) heat rejection temperatures at absorber (T,) and condenser (T,) are taken to be equal. However, different temperatures can exist when the cooling water flows in series through the two components. Under such situations, it is essential to know which of Ta and T, has greater influence on the performance of the VARS.
Here the influence of different T, and T, on the performance of a single-stage VARS working with HCFC22 as a refrigerant and three organic solvents, namely DMA, DMF and DEMTEG, as absorbents is studied. Results are obtained over a wide range of operating temperatures. To improve the performance of HCFC22-based VARS, results reveal that (i) the cooling water in parallel pipe connections should be used at low values of temperatures at evaporator, cooling water and heat source, and (ii) cooling water should first flow through condenser and then through the absorber when evaporator and heat source temperatures are high over the complete range of cooling water temperatures. COP,,, is more sensitive to T, than to T,.