Visualitza Departament: Enginyeria Mecànica i Construcció per autoria "ce793ccc-1c84-42bf-8709-8581fb60fcdc"
Ara mostrant els elements 61-80 d 89
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Modeling of a PCM TES Tank Used as an Alternative Heat Sink for a Water Chiller. Analysis of Performance and Energy Savings
Real Fernández, Antonio; Navarro-Esbrí, Joaquín; Mota-Babiloni, Adrián; Barragán Cervera, Angel; Doménech Ballester, Luis; Sánchez, Fernando; Maiorino, Angelo; APREA, CIRO MDPI (2019-09-24)Phase change materials (PCMs) can be used in refrigeration systems to redistribute the thermal load. The main advantages of the overall system are a more stable energy performance, energy savings, and the use of the ... -
Modelling and evaluation of a high-temperature heat pump two-stage cascade with refrigerant mixtures as a fossil fuel boiler alternative for industry decarbonization
Navarro-Esbrí, Joaquín; Fernández-Moreno, Adrián; Mota-Babiloni, Adrián Elsevier (2022-05-22)High-Temperature Heat Pump (HTHP) is becoming a feasible technology for decarbonization, being proposed as an alternative to fossil fuel boilers in several industrial, commercial, and urban applications. This work presents ... -
Multi-objective optimization of a novel reversible High-Temperature Heat Pump-Organic Rankine Cycle (HTHP-ORC) for industrial low-grade waste heat recovery
Mateu-Royo, Carlos; Mota-Babiloni, Adrián; Navarro-Esbrí, Joaquín; Peris, Bernardo; Moles, Fran; Amat-Albuixech, Marta Elsevier (2019-08-08)Nowadays, a high amount of industrial thermal energy is still lost due to the lack of competitive solutions for energy revalorization. Facing this challenge, this paper presents a novel technology, based on a reversible ... -
Novel compound waste heat-solar driven ejector-compression heat pump for simultaneous cooling and heating using environmentally friendly refrigerants
Al-Sayyab, Ali; Mota-Babiloni, Adrián; Navarro-Esbrí, Joaquín Elsevier (2021-01-15)This work investigates the theoretical performance of a novel compound waste heat-solar driven ejector-solar assisted heat pump for simultaneous heating and cooling purposes. The system utilizes waste heat from three different ... -
Novel molecules as working fluids for refrigeration, heat pump and organic Rankine cycle systems
Gimenez-Prades, P.; Navarro-Esbrí, Joaquín; Arpagaus, Cordin; Fernandez-Moreno, A.; Mota-Babiloni, Adrián Elsevier (2022-10)Hydrofluorocarbons (HFCs), one of the most used working fluids in HVAC&R and ORC applications, are being phased down rapidly because of their high global warming potential (GWP). Consequently, this sector is looking for ... -
Optimal refrigerant mixture in single-stage high-temperature heat pumps based on a multiparameter evaluation
Fernández-Moreno, Adrián; Mota-Babiloni, Adrián; Giménez-Prades, Pau; Navarro-Esbrí, Joaquín Elsevier Ltd (2022-01-25)High-temperature heat pumps (HTHPs) are compression systems that convert residual heat to high-grade heat used in several industrial applications. Refrigerants for HTHPs are still not explored, and most studies consider ... -
Optimisation of high-temperature heat pump cascades with internal heat exchangers using refrigerants with low global warming potential
Mota-Babiloni, Adrián; Mateu-Royo, Carlos; Navarro-Esbrí, Joaquín; Moles, Fran; Amat-Albuixech, Marta; Barragán Cervera, Angel Elsevier (2018-12-15)High-temperature heat pumps (HTHPs) based on vapour compression can be used for industrial low-grade waste heat valorisation, which can aid in mitigating climate change. Currently, the performance of HTHPs ... -
Performance evaluation of an Organic Rankine Cycle (ORC) for power applications from low grade heat sources
Peris, Bernardo; Navarro-Esbrí, Joaquín; Moles, Fran; Martí, José Pascual; Mota-Babiloni, Adrián Elsevier (2015-01-22)In this paper the performance of an Organic Rankine Cycle (ORC) module, which was designed and built for a specific power application, is experimentally characterized. The ORC tested satisfies the main specifications for ... -
Performance evaluation of modified compound organic Rankine-vapour compression cycle with two cooling levels, heating, and power generation
Al-Sayyab, Ali; Mota-Babiloni, Adrián; Navarro-Esbrí, Joaquín Elsevier (2023)This work analyses a novel combined organic Rankine-compound ejector vapour compression cycle for power, cooling and heating production using a low-grade ground heat source as the primary heat source. Ultra-low global ... -
Refrigerant R32 as lower GWP working fluid in residential air conditioning systems in Europe and the USA
Mota-Babiloni, Adrián; Navarro-Esbrí, Joaquín; Makhnatch, Pavel; Moles, Fran Elsevier (2017)Because air conditioning and heat pump systems contribute greatly to greenhouse gas emissions, equipment with both lower global warming potential (GWP) working fluids and a higher level of performance should be used. R32 ... -
Renewable and waste heat applications for heating, cooling, and power generation based on advanced configurations
Al-Sayyab, Ali; Mota-Babiloni, Adrián; Navarro-Esbrí, Joaquín Elsevier (2023)Using renewable heat energy sources, recovering the waste heat, and enhancing the processes and energy efficiency can reduce the electricity dependency of several industrial applications. Renewable and waste heat have ... -
Semi-empirical analysis of HFC supermarket refrigeration retrofit with advanced configurations from energy, environmental, and economic perspectives
Mota-Babiloni, Adrián; Giménez-Prades, Pau; Makhnatch, Pavel; Rogstam, Jörgen; Fernández-Moreno, Adrián; Navarro-Esbrí, Joaquín Elsevier B.V. (2022-02-23)F-gas phase-down schedules will remove most of the HFCs (hydrofluorocarbons) used in refrigeration systems in the short term. Besides refrigerant substitution, configuration modifications can be considered in existing ... -
Semi-empirical and environmental assessment of the low GWP refrigerant HCFO-1224yd(Z) to replace HFC-245fa in high temperature heat pumps
Mateu-Royo, Carlos; Mota-Babiloni, Adrián; Navarro-Esbrí, Joaquín Elsevier (2021-02-22)This paper investigates a promising low-GWP refrigerant, HCFO-1224yd(Z), as an environmentally friendly replacement for HFC-245fa in high temperature heat pumps (HTHPs). First, the thermophysical properties of both fluids ... -
Shell-and-tube evaporator model performance with different two-phase flow heat transfer correlations. Experimental analysis using R134a and R1234yf
Navarro-Esbrí, Joaquín; Moles, Fran; Peris, Bernardo; Barragán Cervera, Angel; Mendoza-Miranda, Juan Manuel; Mota-Babiloni, Adrián; Belman, Juan Elsevier (2014-01)This work presents a model of a shell-and-tube evaporator using R1234yf and R134a as working fluids. The model uses the effectiveness-NTU method to predict the evaporation pressure and the refrigerant and secondary fluid ... -
Small capacity absorption systems for cooling and power with a scroll expander and ammonia based working fluids
Mendoza, Luis Carlos; Ayou, Dereje S.; Navarro-Esbrí, Joaquín; Bruno, Joan Carles; Coronas, Alberto Elsevier (2014-11)Up to now, the use of ammonia/water absorption cycles has been mainly limited to the production of refrigeration or air conditioning but due to the relatively high generator pressure some authors have proposed the integration ... -
Techno-economic analysis of a PV/T waste heat–driven compound ejector-heat pump for simultaneous data centre cooling and district heating using low global warming potential refrigerants
Al-Sayyab, Ali; Navarro-Esbrí, Joaquín; Barragán Cervera, Angel; Mota-Babiloni, Adrián Springer Nature (2022-08-05)A comprehensive techno-economic evaluation is evaluated based on an innovative compound ejector-heat pump system with PV/T (photovoltaic thermal) waste heat-driven. The aim of the system is simultaneous data centre cooling ... -
Ternary refrigerant blends for ultra-low temperature refrigeration
Mota-Babiloni, Adrián; Fernández-Moreno, Adrián; Giménez-Prades, Pau; Udroiu, Cosmin-Mihai; Navarro-Esbrí, Joaquín Elsevier (2023)The absence of GWP limitation for refrigerants operating in vapour compression systems with a target temperature below –50 ◦C has caused slower market development. Therefore, while typical refrigeration applications have ... -
Theoretical comparison of low GWP alternatives for different refrigeration configurations taking R404A as baseline
Mota-Babiloni, Adrián; Navarro-Esbrí, Joaquín; Barragán Cervera, Angel; Molés Ribera, Francisco; Peris, Bernardo Elsevier (2014-04-25)Six refrigerants are evaluated as low GWP replacements for R404A using different configurations, including two-stage system architectures. These refrigerants are selected according to similar characteristics to R404A, and ... -
Theoretical energy performance evaluation of different single stage vapour compression refrigeration configurations using R1234yf and R1234ze(E) as working fluids
Molés, Francisco; Navarro-Esbrí, Joaquín; Peris, Bernardo; Mota-Babiloni, Adrián; Barragán Cervera, Angel Elsevier (2014-05-10)R1234yf and R1234ze(E) have been proposed as alternatives for R134a in order to work with low GWP refrigerants, but this replacement results generally in a decrease of the performance. For this reason, it is interesting ... -
Theoretical evaluation of different high-temperature heat pump configurations for low-grade waste heat recovery
Mateu-Royo, Carlos; Navarro-Esbrí, Joaquín; Mota-Babiloni, Adrián; Amat-Albuixech, Marta; Moles, Fran Elsevier (2018-06)The introduction of high-temperature heat pumps for waste heat recovery with low GWP refrigerants can reduce the greenhouse gas emissions in the industrial sector. This article evaluates the energy performance and the ...