A comparative study on the GAX based absorption refrigeration systems: SGAX, GAXH and GAX-E

Mehr, A.S.; Yari, Mortaza; Mahmoudi, S.M.S.; Soroureddin, Amir

doi:10.1016/j.applthermaleng.2012.03.033

Cited by 19 publications

(1 citation statement)

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“…The comparatively higher exergy destruction in the ejector might be because of the friction at different parts of the ejector and the nature of mixing process. 18,19 As the evaporator temperature increases, the condenser exergy destruction increases due to the increase in temperature difference between the refrigerant and cooling water. However, the exergy destruction in the ejector decreases with increasing evaporator temperature (pressure) due to the less irreversibility occurring in the mixing process (the pressure difference between the primary and secondary decreases with increasing evaporator temperature).…”

Section: Resultsmentioning

confidence: 99%

An experimental and theoretical study of a jet-pump refrigeration system designed using a new two-dimensional model for the entrainment region of the ejector

Soroureddin

Mehr

Mahmoudi

et al. 2013

Proceedings of the Institution of Mechanical Engineers, Part A:

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The performance of an ejector refrigeration cycle is investigated both theoretically and experimentally. By applying the equations for the conservation of mass, energy, and momentum as well as that for the exergy balance, for each component in the cycle, a new two-dimensional thermodynamic model is developed. The influence of flow viscosity is taken into account by assuming a two-dimensional flow near the ejector inner wall. Results indicate that the cycle coefficient of performance decreases with increasing generator temperature and the second law efficiency increases with increasing evaporator temperature and/or decreasing generator temperature. It is found that the maximum relative error occurred in calculating the entrainment ratio is 7.52%. Exergy analysis revealed that the ejector has almost the highest contribution in the total exergy destruction. In addition, increasing the evaporator temperature from 2 to 15.5 C results in a decrease in ejector exergy destruction by up to 8%.

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Section: Resultsmentioning

confidence: 99%