NLP model based thermoeconomic optimization of vapor compression–absorption cascaded refrigeration system

Jain, Vaibhav; Sachdeva, Gulshan; Kachhwaha, Surendra Singh

doi:10.1016/j.enconman.2014.12.095

Cited by 53 publications

(16 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Theoretical and experimental investigations were carried out over the CS evaporating temperature ranging from -100 to -170°C. Jain et al [11] addressed the size and cost estimation of vapor compression-absorption cascaded refrigeration system (VCACRS) for water chilling application taking R410a and water-LiBr as refrigerants in compression and absorption section respectively. The results showed that the cascading of compression-absorption systems becomes attractive for lower rate of interest and increase life span and operational period.…”

Section: Introductionmentioning

confidence: 99%

Performance comparison between a conventional vapor compression and compression-absorption single-stage and double-stage systems used for refrigeration

Colorado

Rivera

2015

Applied Thermal Engineering

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Performance comparison between a conventional vapor compression and compression-absorption single-stage and double-stage systems used for refrigeration

Colorado

Rivera

2015

Applied Thermal Engineering

View full text Add to dashboard Cite

“…Jain et al showed that electric power consumption in vapor compression absorption (LiBr-H 2 O) cascaded refrigeration system is reduced by 61% and coefficient of performance (COP) of compression section is improved by 155% as compared with equivalent vapor compression refrigeration system [5]. Also Jain et al have studied on thermo-economic optimization of this cycle and found that this cycle decreases the total annual cost by 11.9% [6]. In addition, Jain et al, in their recent study have analyzed thermo-economic and environmental optimization of this cycle and found that the multi objective optimization is better than the thermoeconomic optimization [7].…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic Analysis of a Cascade Refrigeration System

Karaali

2016

Acta Phys. Pol. A

View full text Add to dashboard Cite

There is a need for cooling by using the waste heat energy in food industry. Absorption cycles can be driven by waste thermal, geothermal, solar or industrial processes energies. In this study, cascade refrigeration system is thermodynamically modeled, and analyzed by using first law of thermodynamics, and exergy method. Thermodynamic properties such as pressure, temperature, entropy, enthalpy, exergy, mass flow rate in each stream are calculated for 50, 75, 100• C and for 0.8, 1.0, and 1.5 MPa pump pressure. A computer program is used that was prepared in FORTRAN by the author for the analyses. It is found that the compression-absorption cascade cooling cycle is appropriate for most of the kind of waste heat applications. Increase of the generator inlet heat temperature increases the generator inlet heat, the absorber outlet heat and the condenser 2 outlet heat energies and decreases the coefficient of performance of the absorption and the overall cycles. The generator heat decreases with increase of the pump pressure. Also increase of the pump pressure decreases the coefficient of performance of the absorption and the overall cycles. Increase of the pump pressure and the generator temperature decreases the exergetic coefficient of performance. Increase of the generator temperature and pump pressure increases the generator inlet exergy. It is concluded that increase of the generator temperature and the pump pressure increases the total destructed exergy of the cycle.

show abstract

“…Jain et al [12] investigated the size and cost of a VC-VA cascaded refrigeration system for a waterchilling facility that used R410a and LiBr/H2O as refrigerants in the compression and absorption divisions. The main objective of the optimization was to minimize the total annual cost of the system.…”

Section: Introductionmentioning

confidence: 99%

Parametric Study of Energy, Exergy and Thermoeconomic Analyses on Vapor-Compression System Cascaded With Libr/Water and Nh3/Water Absorbtion Cascade Refrigeration Cycle

Dalkılıç¹

2017

ANADOLU UNIVERSITY JOURNAL OF SCIENCE AND TECHNOLOGY a - Applied Sciences and Engineering

View full text Add to dashboard Cite

Energy savings on cooling systems can be achieved using novel refrigeration cycles. To this end, vapor-compression/vaporabsorption cascade refrigeration systems may be a substitute for single-stage vapor-compression refrigeration systems. These cycles can use renewable energy sources such as geothermal and solar heat energy as well as waste heat from processes to provide cooling, and they also require less electrical energy than vapor-compression cycles with alternative refrigerants. In this study, vapor-compression and vapor-absorption cascade systems undergo second-law analysis for various cooling capacities. While lithium bromide-water and NH3/H2O are the working fluids in the vapor-absorption part, various refrigerants are used in the vapor-compression section. The refrigerants R134a and R600a as well as R410A and R407C are tested in the study. The effects on the coefficient of system performance (COP) of alterations in cooling capacity, superheating, and subcooling in the vapor-compression part; temperature in the generator and absorber; and degree of overlap in cascade condenser in the vaporabsorption part. The results were validated by values given in the literature. Improvements in the COPs of the vapor compression, vapor absorption, and cascade systems were obtained separately. According to the analyses, cascade systems' COP increases with generator and evaporator temperatures and also increase as condenser and absorber temperatures decrease. Moreover, the generator had the highest exergy-destruction rates, followed by the condenser and absorber, respectively. Electricity consumption and payback period were also determined by considering the various parameters of the study.

show abstract

NLP model based thermoeconomic optimization of vapor compression–absorption cascaded refrigeration system

Cited by 53 publications

References 34 publications

Performance comparison between a conventional vapor compression and compression-absorption single-stage and double-stage systems used for refrigeration

Performance comparison between a conventional vapor compression and compression-absorption single-stage and double-stage systems used for refrigeration

Thermodynamic Analysis of a Cascade Refrigeration System

Parametric Study of Energy, Exergy and Thermoeconomic Analyses on Vapor-Compression System Cascaded With Libr/Water and Nh3/Water Absorbtion Cascade Refrigeration Cycle

Contact Info

Product

Resources

About