201500404 Thermodynamic and Exergoeconomic Analyses

Ayed alshammari, 201500404
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Thermodynamic and Exergoeconomic Analyses of a Novel Combined Cycle Comprised of
Vapor-Compression Refrigeration and Organic Rankine Cycles
Nima Javanshir, S. M. Seyed Mahmoudi, and Marc A. Rosen
In this research journal, a power cogeneration cycle/refrigeration containing organic Rankine
cycles and vapor-compression refrigeration is planned and examined. The proposed cycle is
demonstrated and assessed from thermo-economic and thermodynamic perspectives through the
software named as Engineering Equation Solver (EES). The features of thermodynamics, along
with exergy price charges for all streams are originated distinctly. Exergy and thermal
productivities of 57.9% and 27.2%, correspondingly, are found for the power cogeneration cycle
by the occupied liquid R143a. The outcomes designate about the arrangement by using R134a
displays the lowermost exergy and thermal productivities amongst additionally employed
liquids, although the systems utilizing R143a and R22 display the maximum exergy and energy
proficiencies, correspondingly. The turbine and boiler subsidize the maximum to the entire
exergy obliteration frequency.
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Ayed alshammari, 201500404
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A review on exergy analysis of vapor compression refrigeration system
J.U. Ahamed∗, R. Saidur, H.H. Masjuki
The research evaluates the potentials of analyses in exergy field investigation at numerous
operational subdivisions where the vapor compression refrigeration systems are utilized. Now, it
is originated that exergy should be contingent on condensing temperature, evaporating
temperature, compressor, and sub-cooling pressure. It moreover is contingent on ecological
temperature. Combinations of R134a and hydrocarbons also elaborate on improved routine in
terms of further refrigerants. Nano fluid and nano lubricant is the main reason to decrease
the energy fatalities in the compressor incidentally. Exergy proficiency can be enhanced through
the sub-cooling process at a temperature of more than 5 ◦ C and lowering the temperature
difference for shrinking and vaporizing temperature. It can be augmented by growing reference
temperature too.
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Ayed alshammari, 201500404
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Exergy Analysis of Vapor Compression Refrigeration System Using R12 and R134a as
Refrigerants
Mohan Chandrasekharan
This research deals with the comparative study of the refrigerant effect on the modest vapor
compression refrigeration system performance. This analysis is founded on the refrigerants
elements named as R134a and R12. A computational model based on exergy and energy
investigation is offered for effect’s study of the degree of sub-cooling and evaporating
temperature, exegetic proficiency, and coefficient of performance of the refrigerator.
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Ayed alshammari, 201500404
Exergy Analysis of Vapor Compression Refrigeration System with Using R-
407C and R-410A
Jyoti Soni
An estimation model founded on exergy and energy study is offered the impacts survey on the
degree of subcooling, vaporizing temperatures, liquid-vapor heat exchanger efficiency on the
COP and dead state temperatures, second law of EDR and proficiency of the vapor compression
refrigeration cycle for R-410A and R-407C. The assumptions show in the study are shown
below.
1. The exergetic efficiency and COP of R-407C are enhanced than R-410A.
2. The net upsurge in R-407C exergetic competence is 7.02% for 10°C subcooling, and R-410A
is 8.01% at 10°C temperature subcooling.
3. With an upsurge in dead state temperatures, exergetic efficiency upsurges, and EDR decreases
though the factor of performance residues continuous.
4. With the upsurge inefficiency of exergetic efficiency and liquid-vapor heat exchanger, COP
reduces though EDR upsurges.
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