abstract: minimizing the work consumed in refrigeration system is the most effective measure to reduce the cost of products in sub-ambient chemical processes. the introduction of mixed working fluids into refrigeration system in place of pure working fluids is a recent advancement applied in the field. due to the lack of systematic design method for mixed refrigerant cycle (mrc), conventional a...

This paper aims at studying a trigeneration system, based on an internal combustion engine and a steam ejector refrigeration system. The designed cycle is to generate cooling and heating energies, and supply power simultaneously. The cycle is studied from thermodynamics point of view and for this purpose, the first law of thermodynamics is applied to all components of the cycle. The efficiency ...

A combined refrigeration and power cycle, which uses ammonia-water as the working fluid, is proposed by combining Rankine and vapour absorption cycles with an advantage of varying refrigeration capacity to power output ratio. The study investigates the usage of low temperature heat sources for the cycle operation. Results of parametric analysis are presented, which show the scope for optimizati...

Dual fuel engines with LNG as have become a feasible solution for ship power units in the current situation, but their efficiency needs to be further enhanced meet increasingly stringent emission requirements. This paper designs dual-loop system, including supercritical CO2 cycle and thermally driven ejector refrigeration cycle, recovering exhaust gas charge air heat of marine dual engine. The ...

• Thermo-ecological problem of Ericsson refrigeration cycle is developed and solved. Multi-objective optimization refrigerating investigated. Investigation the effect operating parameters on system performance. sensitivity design variables thermo-ecological objective. In present work, a multi-objective study an irreversible carried out to evaluate cryogenic refrigerator based thermal ecological...

Despite the many advantages, ejector refrigeration systems have not been able to penetrate market because of two prevailing reasons: low coefficient performance and relevant influence operation on whole system. Indeed, depends local flow phenomena occurring within ejector. Thus, improving relies understanding fluid dynamic at "component-scale" integrating such information "system-scale". This p...

Three combined power and refrigeration system are introduced to compare and analyze for a defined demand and same fuel consumption based on thermodynamic parameters in a 24 hours period. Gas turbine and/or steam turbine are used for power generation and also ejector refrigeration cycle is used to produce cooling. These three systems are named as GER, SER and GSER. The results of three systems a...

The relative low COP of transcritical CO2 systems caused by the throttle valve limited the further development. The replacement of a throttle valve with a turboexpander, an ejector or a vortex tube is leading to the way for improving the COP of a transcritical CO2 system. In this paper, a transcritical carbon dioxide refrigeration cycle with different expansion devices was analyzed theoreticall...