Comparative study of air source and ground source heat pumps in 10 coldest Russian cities based on energy-exergy-economic-environmental analysis

Никитин, А. А.; Deymi–Dashtebayaz, Mahdi; Muraveinikov, S. S.; Nikitina, Veronika; Farahnak, Mehdi

doi:10.1016/j.jclepro.2021.128979

Cited by 50 publications

(3 citation statements)

References 36 publications

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“…Since there is usually a conflict between these objectives, in order to obtain the optimal solution, a multi-objective optimization algorithm must be used between the conflicting objectives. In this study, using the Pareto optimal solution and based on the TOPSIS method, which is used to select the final optimal parameters in the Pareto frontier as a multi-objective decision-making method, the proposed system optimizes [57,58]. The equations for the optimization method are as follows [39]:…”

Section: -1-optimization Methods and Objective Functionsmentioning

confidence: 99%

Modeling and multi-objective optimization of a combined cooling, fresh water and power system for gas turbine waste heat recovery

Norani

Deymi–Dashtebayaz

Gholizadeh

et al. 2022

Preprint

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Increasing the efficiency of gas turbine cycle (GTC)-based energy systems and reducing the irreversibility of its processes is one of the challenges that researchers are considering today. The use of waste energy of GTC and inlet air cooling to it are two techniques that help to increase the efficiency of energy production of these systems while the simultaneous it use has been less considered in multiple-generation systems. In this study, a new GTC-based tri-generation system consisting of organic rankine cycle (ORC), thermoelectric generator (TEG), reverse osmosis (RO), and absorption refrigeration cycle (ARC) subsystems is presented. This system simultaneously generates electricity, freshwater, and cooling. The total cooling capacity is used in two parts: user demand and inlet air cooling to the GTC compressor. Tri-generation system was examined from three views energy, exergy and exergoeconomic. The results of the thermodynamic analysis showed that the simultaneous use of two waste heat recovery and inlet air cooling of GTC techniques in the tri-generation system reduces the exergy destruction cost rate of the system while increasing the total energy and exergy efficiencies. To improve system performance after a parametric study, a three-objective optimization was performed using the TOPSIS method. The comparison of the results of optimal and design conditions showed that the exergy destruction rate of the system has decreased in optimal conditions and the highest rate of exergy destruction, which is related to the GTC combustion chamber component, has decreased by 66.8 kW. In addition, the total capital cost rate of the system in optimal conditions was reduced by 0.33 kW compared to the design conditions. According to the optimal results, the best performance of the system is in the conditions of the compressor pressure ratio of GTC 8.795 and the turbine inlet temperature of GTC 1505 K that the system has COP 0.74, total exergy efficiency 55.51%, and total product cost rate 32.28 $/h.

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Section: -1-optimization Methods and Objective Functionsmentioning

confidence: 99%

Modeling and multi-objective optimization of a combined cooling, fresh water and power system for gas turbine waste heat recovery

Norani

Deymi–Dashtebayaz

Gholizadeh

et al. 2022

Preprint

Self Cite

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“…The results showed that R41-R161 and R41-R1234ze had the highest COP. Nikitin et al [39] conducted a comparative study of energy, exergy, economic, and environmental analysis of the 10 coldest Russian cities using the Pareto front curve and found Saint Petersburg would benefit from using air-source heat pump (ASHP) systems, while Khabarovsk city would benefit from using groundsource heat pump (GSHP) systems. Dashtebayaz et al [40] studied the efficiency of five HFC refrigerants on geothermal heat pumps to optimise system design, finding R-134a had the highest efficiency and R-125 the lowest.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Simulation Study of the Latest HFC/HFO and Blend of Refrigerants in Vapour Compression Refrigeration System as an Alternative of R134a

et al. 2023

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Experimental and simulation investigation of the performance and characteristics of different refrigerants and blends of refrigerants is carried out to replace the existing refrigerant R134a for a vapour compression refrigeration system. The performance of VCRS systems was improved by several researchers by introducing the concept of mixing the family of refrigerants with low GWP in the working circuit. This research paper presents the performance results of different refrigerants and blends of refrigerants that can replace the R134a it is also an attempt to cover the mechanism and possible combination of different blends of refrigerants to improve the effectiveness as well as efficiency of the refrigeration system. Detailed analysis of different parameters of heat transfer and predictions of low-GWP refrigerants, including the HFO (hydro fluoro-olefin) class and the HC (hydrocarbon) class through energy and exergy analysis of commercial refrigerants such as R134a is performed. Results are obtained by using an experimental test rig and the input parameters of the experiments are kept the same with the simulation software (CYCLE_D-HX 2.0) and validated with the results to replace R134a.

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“…As reviewed in previous sub-section, a limited number of studies have compared the optimal operating conditions of refrigeration systems working with R22 and its substitutes. Although, there are some studies focused on performance optimization of compression refrigeration cycles using environmentally-friendly alternatives with low global warming potential and zero ozone depletion potential [33][34][35] but as discussed, it comes at a significant cost in terms of capital investment, time and effort. It is estimated that the potential savings available in replacement of R22 by R417A can be utilized to retrofit the current infrastructures toward standardization and modernization of refrigeration industry in developing countries like Iran.…”

mentioning

confidence: 99%

Experimental optimization of replacing R22 with R417A without any other changes in configuration of residential air‐conditioning systems based on energy and exergy analysis

Deymi–Dashtebayaz

Farahnak

Tayyeban

et al. 2022

Env Prog and Sustain Energy

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In this paper, the optimal refrigerant mass charge amount of R417A, as a substitute for R22, was experimentally investigated in a split-type air-conditioner with no changes in system configuration. Experiments were conducted for both refrigerants over a range of mass charge from 500 to 850 g in a 12,000 Btuh À1 split air-conditioner as the case study which is a conventional refrigeration system in residential sector of Iran. In order to study the effect of refrigerant mass charge on performance of refrigeration cycle, energy and exergy analysis were performed to determine cooling capacity, energy efficiency ratio (EER) and exergy efficiency.Results showed that the maximum EER for R22 and R417A are 2.48 and 2.41, and the maximum exergy efficiencies obtained for R22 and R417A are around 7.3% and 7%, respectively. Based on both EER and exergy efficiency, the optimum mass charge for R22 and R417A refrigerants are around 640 g and 650 g, respectively. In addition, it was found that under optimal charge conditions, the cooling capacity, EER and exergy efficiency of the system while working with R417A are lower than R22, just by 2.5%, 3%, and 4.5% respectively. Comparison results indicate that R417A can be considered as a suitable substitute for R22, which can almost provide the same performance without need to change the system components.

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Comparative study of air source and ground source heat pumps in 10 coldest Russian cities based on energy-exergy-economic-environmental analysis

Cited by 50 publications

References 36 publications

Modeling and multi-objective optimization of a combined cooling, fresh water and power system for gas turbine waste heat recovery

Modeling and multi-objective optimization of a combined cooling, fresh water and power system for gas turbine waste heat recovery

Experimental and Simulation Study of the Latest HFC/HFO and Blend of Refrigerants in Vapour Compression Refrigeration System as an Alternative of R134a

Experimental optimization of replacing R22 with R417A without any other changes in configuration of residential air‐conditioning systems based on energy and exergy analysis

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