Conventional and advanced exergy analysis of parallel and series compression-ejection hybrid refrigeration system for a household refrigerator with R290

Zhao, Hongxia; Yuan, Tianpeng; Gao, Jia Jia; Wang, Xinli; Yan, Jia

doi:10.1016/j.energy.2018.10.135

Cited by 40 publications

(6 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The exergy balance equations of components of the CRS are also illustrated in Table 6 [34,58], while the other performance parameters are found by Eqs. (4)-( 6) [17,19,36,39,40,47,62].…”

Section: Exergy Termsmentioning

confidence: 99%

“…This can be facilitated by creating a solution procedure flow chart in Figure 2 to make it possible to follow the CRS analysis, as inspired by Ref. [40].…”

Section: Advanced Exergy Analysismentioning

confidence: 99%

“…If the unavoidable part of the exergy destruction of the k th component is well-known, the avoidable part of the exergy destruction is obtained by Eq. ( 13) [40].…”

Section: Identification Of An Optimal Ltc Condenser Temperature For E...mentioning

confidence: 99%

See 2 more Smart Citations

An application of conventional and advanced exergy approaches on a R41/R1233ZD(E) cascade refrigeration system under optimum conditions

AKTEMUR

HACIPASAOGLU

2022

Journal of Thermal Engineering

View full text Add to dashboard Cite

Painstaking adjustment of an optimum low-temperature cycle (LTC) condenser temperature allows cascade refrigeration system (CRS) to operate at maximum performance. This study exhibits an original approach because, for the first time, advanced exergy analysis is implemented under an optimum LTC condenser temperature of CRS operating with R41/R1233zd(E) as an environmentally-friendly refrigerant pair. Under the auspices of advanced exergy analysis, there is endogenous exergy destruction of 50.43% and exogenous exergy destruction of 49.57% within total exergy destruction. It is pointed out that the interactions between the CRS components (external irreversibilities) are partly less than exergy destruction that occurs within components (internal irreversibilities). The avoidable part within total exergy destruction, which is greater than the unavoidable part, indicates that components have a high improvement potential with a value of 56.31%. Furthermore, LTC compressor depends significantly on other components, as it has the largest exogenous part of exergy destruction with 75.82%. The results indicate that the CRS's exergy efficiency, which can be determined based on conventional exergy analysis, is only 36%. However, this increases to 68% with the improvements needed for the components.

show abstract

“…The exergy balance equations of components of the CRS are also illustrated in Table 6 [34,58], while the other performance parameters are found by Eqs. (4)-( 6) [17,19,36,39,40,47,62].…”

Section: Exergy Termsmentioning

confidence: 99%

“…This can be facilitated by creating a solution procedure flow chart in Figure 2 to make it possible to follow the CRS analysis, as inspired by Ref. [40].…”

Section: Advanced Exergy Analysismentioning

confidence: 99%

See 1 more Smart Citation

An application of conventional and advanced exergy approaches on a R41/R1233ZD(E) cascade refrigeration system under optimum conditions

AKTEMUR

HACIPASAOGLU

2022

Journal of Thermal Engineering

View full text Add to dashboard Cite

show abstract

“…Chen et al [19] indicated that 50% of total exergy destruction arises from the ejector, while the generator causes 25%. Zhao et al [20] studied parallel and series compressor-ejector arrangements showing that the highest avoidable endogenous exergy destruction ratio is reported to both compressor and ejector. Gullo [21] applied advanced exergy analysis to transcritical R744 supermarket refrigeration systems with three arrangements: parallel compression, parallel compression with two-phase ejectors-overfed evaporators, and without two-phase ejectors.…”

Section: Introductionmentioning

confidence: 99%

Conventional and Advanced Exergoeconomic Analysis of a Compound Ejector-Heat Pump for Simultaneous Cooling and Heating

et al. 2021

View full text Add to dashboard Cite

This work focused on a compound PV/T waste heat driven ejector-heat pump system for simultaneous data centre cooling and waste heat recovery for district heating. The system uses PV/T waste heat as the generator’s heat source, acting with the vapour generated in an evaporative condenser as the ejector drive force. Conventional and advanced exergy and advanced exergoeconomic analyses are used to determine the cause and avoidable degree of the components’ exergy destruction rate and cost rates. Regarding the conventional exergy analysis for the whole system, the compressor represents the largest exergy destruction source of 26%. On the other hand, the generator shows the lowest sources (2%). The advanced exergy analysis indicates that 59.4% of the whole system thermodynamical inefficiencies can be avoided by further design optimisation. The compressor has the highest contribution to the destruction in the avoidable exergy destruction rate (21%), followed by the ejector (18%) and condenser (8%). Moreover, the advanced exergoeconomic results prove that 51% of the system costs are unavoidable. In system components cost comparison, the highest cost comes from the condenser, 30%. In the same context, the ejector has the lowest exergoeconomic factor, and it should be getting more attention to reduce the irreversibility by design improving. On the contrary, the evaporator has the highest exergoeconomic factor (94%).

show abstract

“…Sanaye et al [22] have presented a new refrigeration system, a combination of a vapor compression refrigeration cycle and an ejector refrigeration cycle. Zhao et al [23]have done conventional exergy and advanced exergy analysis for both the ejector refrigeration cycle and the compressor refrigeration cycle. Esmaeilzadehazimi et al [24]analyzed an MHD-Magneto hydrodynamic-cycle using 4E analysis.…”

Section: Introductionmentioning

confidence: 99%

Comparative 4E and advanced exergy analyses and multi-objective optimization of refrigeration cycles with a heat recovery system

Mofrad

Zandi

Salehi

et al. 2020

International Journal of Thermodynamics

View full text Add to dashboard Cite

This paper aims to provide comprehensive 4E (energy, exergy, exergoeconomic, and exergoenvironmental) and advanced exergy analyses of the Refrigeration Cycle (RC) and Heat Recovery Refrigeration Cycle (HRRC) and comparison of the performance with R744 (CO2) and R744A (N2O) working fluids. Moreover, multi-objective optimization of the systems has been considered to define the optimal conditions and the best cycle from various perspectives. In HRRC, heat recovery is used as a heat source for an organic Rankine cycle. The energy and exergy analysis results show that utilizing HRRC with both refrigerants increases the coefficient of performance (COP) and exergy efficiency. COP and exergy efficiency for HRRC-R744 have been obtained 2.82 and 30.7%, respectively. Due to the better thermodynamic performance of HRRC, other analyses have been performed on this cycle. Exergoeconomic analysis results show that using R744A leads to an increase in the total product cost. Total product cost with R744 and R744A have been calculated by 1.56 $/h and 1.96$/h, respectively. Additionally, to obtain the processes' environmental impact, Life Cycle Assessment (LCA) is used. Exergoenvironmental analysis showed that using R744A increases the product environmental impact by 32%. Owning to the high amount of endogenous exergy destruction rate in the compressor and ejector compared to other equipment, they have more priority for improvement. Multi-objective optimization has been performed with exergy efficiency and total product cost objective functions as well as COP and product environmental impact for both refrigerants, which indicates that HRRC-R744 has better performance economically and environmentally. In optimal condition, the value of exergy efficiency, total product cost, COP, and the product environmental impact have been accounted for by 28.51%, 1.44 $/h, 2.76, and 149.01 mpts/h, respectively.

show abstract

Conventional and advanced exergy analysis of parallel and series compression-ejection hybrid refrigeration system for a household refrigerator with R290

Cited by 40 publications

References 37 publications

An application of conventional and advanced exergy approaches on a R41/R1233ZD(E) cascade refrigeration system under optimum conditions

An application of conventional and advanced exergy approaches on a R41/R1233ZD(E) cascade refrigeration system under optimum conditions

Conventional and Advanced Exergoeconomic Analysis of a Compound Ejector-Heat Pump for Simultaneous Cooling and Heating

Comparative 4E and advanced exergy analyses and multi-objective optimization of refrigeration cycles with a heat recovery system

Contact Info

Product

Resources

About