Thermodynamic performance analysis of a vapor compression–absorption cascaded refrigeration system

“…However, this still has to be with a cooling capacity that adequately produces thermal comfort. What this entails has been set out by various authors (MUI et al, 2010;RAYMOND et al, 2011;BILAL et al, 2013;QURESHI et al, 2013;HASSAN, 2013;JAIN et al, 2014;FARAJI et al, 2014). Various configurations of air conditioning can be used depending on the local environmental parameters involved (VAKILOROAYA et al, 2014a;SAG et al, 2015) and also, on the type of water pumping system, the thermal load, the compression system, the condensed water cooling system and control systems (QI; DENG, 2009).…”

Section: Introductionmentioning

confidence: 99%

“…The concept of a Green building, also called a sustainable building, is about creating structures and using processes that are environmentally responsible and resource-efficient throughout a building's life-cycle, in an optimal way (JUDELSON, 2007;MA;WANG, 2009;SETYOWATI et al, 2013). So that buildings are considered green, they must follow strict precepts and determinations such as meeting national and international green standards for: construction, air quality; energy use; water use; labor safety and hygiene of the work environment; use of environmentally friendly materials; ergonomic fixtures and fittings; correct treatment of solid waste and controlling emissions.…”

Section: Introductionmentioning

confidence: 99%

“…Different authors have analyzed the First and Second Laws of Thermodynamics to measure the performance of mechanical cooling systems and absorption systems and target thermal comfort (KEÇEBAS, 2013;JAIN et al, 2013;ATTAR et al, 2014;OCHOA et al, 2014a;OCHOA et al, 2014b;OCHOA et al, 2014c;LIN et al, 2014;AMINYAVARI et al, 2014;ALLEYNE, 2015).…”

Section: Introductionmentioning

confidence: 99%

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<b>Comparative study of air conditioning systems with vapor compression chillers using the concept of green buildings

2015

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ABSTRACT. This paper sets out to compare two different cooling systems that use vapor compression chillers for air conditioning environments. It was proposed to compare different operations in isolated and combined action operations. These operations are evaluated in the concepts of green buildings. A mathematical model was developed based on the principles of mass and energy conservation and complemented by various functions so as to determine the thermophysical properties and efficiencies of the compressors. The equations of the model were solved by the EES (Engineering Equation Solver) program. The model evaluates the influence of the main HVAC operating parameters of the chilled water system when operating under three different configurations. The results showed that the system with a differentiated compression presents a COP equal to that of the system with screw chillers in the range 0-300 RTs, and a COP hat is on average 9% higher in the range 400-800 RTs.Keywords: centrifugal chiller, screw chiller, energy, simulation, COP.Estudo comparativo de sistemas de ar condicionado com chillers de compressão de vapor com o conceito de edifícios verdes RESUMO. O presente trabalho se propõe a comparar dois sistemas de refrigeração diferentes usando chiller de compressão de vapor, para a climatização de ambientes. Foi proposto operações diferentes para a comparação em operações isoladas e ações combinadas. Essas operações são avaliadas nos conceitos de edifícios verdes. Foi desenvolvido um modelo matemático baseado nos princípios de conservação de massa e energia e complementado por várias funções, de modo a determinar as propriedades termofísicas e eficiências dos compressores. As equações do modelo foram resolvidos pelo programa EES (Engineering Equation Solver). O modelo avalia a influência dos parâmetros operacionais principais do sistema de refrigeração de água gelada operando em três configurações diferentes. Os resultados mostraram que o sistema com compressão diferenciada apresenta COP igual ao do sistema com chillers parafuso na faixa de 0 a 300 TRs, e um COP superior em média de 9% na faixa de 400 a 800 TRs.Palavras-chave: chiller centrifugo, chiller de parafuso, energia, simulação, COP.

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“…Other types of hybrid air conditioning are cascade vapour compression with absorption cycle type proposed by Jain et al [36], solar-biomass hybrid system studied by Prasartkaew and Kumar [37] and solar absorption and vapour compression based hybrid air conditioning investigated by Ortiz et al [38], Rosiek and Batlles [39] and Diaconu [40].…”

Section: Hybrid Air Conditioningmentioning

confidence: 99%

A review on the recent development of solar absorption and vapour compression based hybrid air conditioning with low temperature storage

Noor

Azim

Azran

et al. 2016

MATEC Web of Conferences

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Abstract. Conventional air conditioners or vapour compression systems are main contributors to energy consumption in modern buildings. There are common environmental issues emanating from vapour compression system such as greenhouse gas emission and heat wastage. These problems can be reduced by adaptation of solar energy components to vapour compression system. However, intermittence input of daily solar radiation was the main issue of solar energy system. This paper presents the recent studies on hybrid air conditioning system. In addition, the basic vapour compression system and components involved in the solar air conditioning system are discussed. Introduction of low temperature storage can be an interactive solution and improved economically which portray different modes of operating strategies. Yet, very few studies have examined on optimal operating strategies of the hybrid system. Finally, the findings of this review will help suggest optimization of solar absorption and vapour compression based hybrid air conditioning system for future work while considering both economic and environmental factors.

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Thermodynamic performance analysis of a vapor compression–absorption cascaded refrigeration system

Cited by 113 publications

References 31 publications

Exergy Analysis of the Refrigerating System of a Ship Operating in Variable Sea Water Temperature Conditions

Exergy Analysis of the Refrigerating System of a Ship Operating in Variable Sea Water Temperature Conditions

<b>Comparative study of air conditioning systems with vapor compression chillers using the concept of green buildings

A review on the recent development of solar absorption and vapour compression based hybrid air conditioning with low temperature storage

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