Browsing EMC_Articles by Author "ce793ccc-1c84-42bf-8709-8581fb60fcdc"
Now showing items 21-40 of 82
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Drop-in analysis of an internal heat exchanger in a vapour compression system using R1234ze(E) and R450A as alternatives for R134a
Mota-Babiloni, Adrián; Navarro-Esbrí, Joaquín; Barragán Cervera, Angel; Moles, Fran; Peris, Bernardo Elsevier (2015-10)The IHX (internal heat exchanger) is introduced in some refrigeration systems in order to achieve higher energy performances. Results obtained vary greatly depending on the refrigerant used and working conditions. This ... -
Drop-in energy performance evaluation of R1234yf and R1234ze(E) in a vapor compression system as R134a replacements
Mota-Babiloni, Adrián; Navarro-Esbrí, Joaquín; Barragán Cervera, Angel; Moles, Fran; Peris, Bernardo Elsevier (2014-10)This paper presents an energy performance evaluation of two low-GWP refrigerants, R1234yf and R1234ze(E), as drop-in replacements for R134a. Tests are carried out in a monitored vapor compression system combining different ... -
Dual fluid trigeneration combined organic Rankine-compound ejector-multi evaporator vapour compression system
Al-Sayyab, Ali; Mota-Babiloni, Adrián; Barragán Cervera, Angel; Navarro-Esbrí, Joaquín Elsevier (2022-07-02)This article evaluates the energy and exergy performance of a novel dual fluid combined organic Rankine-compound ejector multi evaporators vapour compression system (ORCEMES) for power, cooling and heating purposes. Six ... -
Dynamic model of a shell-and-tube condenser. Analysis of the mean void fraction correlation influence on the model performance
Milián, V.; Navarro-Esbrí, Joaquín; Ginestar, D.; Moles, Fran; Peris, Bernardo Elsevier (2013)A moving-boundary dynamic model of a shell-and-tube condenser is presented. Within this approach, the mean void fraction is a relevant parameter which is obtained, in this work, using different correlations proposed in the ... -
Effect of mean void fraction correlations on a shell-and-tube evaporator dynamic model performance
Navarro-Esbrí, Joaquín; Milián, Víctor; Mota-Babiloni, Adrián; Molés, Francisco; Verdú, Gumersindo Taylor and Francis (2015-08-22)In this article, the influence of different mean void fraction correlations on a shell-and-tube evaporator dynamic model performance has been evaluated. The model proposed is based on the moving-boundary approach and ... -
Energy, exergy, and environmental (3E) analysis of a compound ejector-heat pump with low GWP refrigerants for simultaneous data center cooling and district heating
Al-Sayyab, Ali; Navarro-Esbrí, Joaquín; Mota-Babiloni, Adrián Elsevier Ltd. (2021-10-05)This work presents an energy, exergy, and environmental evaluation of a novel compound PV/T (photovoltaic thermal) waste heat driven ejector-heat pump system for simultaneous data center cooling and waste heat recovery for ... -
Evaluación de alternativas al R404A en tuberías de sistemas de refrigeración
Mota-Babiloni, Adrián; Navarro-Esbrí, Joaquín; Barragán Cervera, Angel; Molés Ribera, Francisco; PERIS PEREZ, BERNARDO Editorial UNED (2015)Debido a normativas aprobadas recientemente en algunos países desarrollados, los refrigerantes de alto GWP (Global Warming. Potential) van a ser retirados o grabados con altos impuestos. En este artículo se obtiene la ... -
Evaluación energética de los refrigerantes R1234yf y R152a como alternativa al R134a en sistemas de refrigeración
Navarro-Esbrí, Joaquín; Mota-Babiloni, Adrián; Peris, Bernardo; Moles, Fran; Mendoza-Miranda, Juan Manuel; Belman, Juan; Rubio Arana, Jose Cuauhtémoc Universidad Nacional de Educación a Distancia (2013)En este artículo se presenta la evaluación del desempeño teórico de los refrigerantes R1234yf y R152a como alternativas al R134a para ciclos de refrigeración. La evaluación se realiza para un ciclo de simple etapa en un ... -
Evaluation of R448A and R450A as low-GWP alternatives for R404A and R134a using a micro-fin tube evaporator model
Mendoza-Miranda, Juan Manuel; Mota-Babiloni, Adrián; Navarro-Esbrí, Joaquín Elsevier (2016-04-05)When retrofitting new refrigerants in an existing vapour compression system, their adaptation to the heat exchangers is a major concern. R450A and R448A are commercial non-flammable mixtures with low GWP developed to replace ... -
Experimental analysis of a high temperature heat pump prototype with low global warming potential refrigerant R-1336mzz(Z) for heating production above 155 °C
Navarro-Esbrí, Joaquín; Mota-Babiloni, Adrián Elsevier (2023-02-06)There is an urgent need to reduce fossil fuel dependency on heating processes in many sectors, highlighting industries. Vapour compression heat pumps are the most promising technologies for decarbonisation in high temperature ... -
Experimental analysis of R1234yf as a drop-in replacement for R134a in a vapor compression system
Navarro-Esbrí, Joaquín; Mendoza-Miranda, Juan Manuel; Mota-Babiloni, Adrián; Barragán Cervera, Angel; Belman, Juan (2013-05)This paper presents an experimental analysis of a vapor compression system using R1234yf as a drop-in replacement for R134a. In this work, we compare the energy performance of both refrigerants, R134a and R1234yf, in a ... -
Experimental analysis of the internal heat exchanger influence on a vapour compression system performance working with R1234yf as a drop-in replacement for R134a
Navarro-Esbrí, Joaquín; Moles, Fran; Barragán Cervera, Angel Elsevier (2013-09-25)This paper presents an experimental analysis of the influence of an internal heat exchanger on the performance of a vapour compression system using R1234yf as a drop-in replacement for R134a. In this work, we compare the ... -
Experimental assessment of R134a and its lower GWP alternative R513A
Mota-Babiloni, Adrián; Makhnatch, Pavel; Khodabandeh, Rahmatollah; Navarro-Esbrí, Joaquín Elsevier (2017-02)Lower GWP refrigerants are essential to mitigate the impact of refrigeration systems on climate change. HFO/HFC mixtures are currently considered to replace HFCs in refrigeration and air conditioning systems. The aim of ... -
Experimental characterization of an ORC (organic Rankine cycle) for power and CHP (combined heat and power) applications from low grade heat sources
Peris, Bernardo; Navarro-Esbrí, Joaquín; Moles, Fran; González, Manuel; Mota-Babiloni, Adrián Elsevier (2015-03)An ORC (organic Rankine cycle) module, designed and built for a specific CHP (combined heat and power)) application, is tested in this paper. The aim of the work is to characterize the system performance in the operating ... -
Experimental characterization of an Organic Rankine Cycle (ORC) for micro-scale CHP applications
Peris, Bernardo; Navarro-Esbrí, Joaquín; Moles, Fran; Martí, José Pascual; Mota-Babiloni, Adrián Elsevier (2015-03-25)This work conducts an experimental characterization of an Organic Rankine Cycle (ORC) module along the operating conditions expected for micro Combined Heat and Power (CHP) applications. For this, a monitored test bench ... -
Experimental comparison of HFO-1234ze(E) and R-515B to replace HFC-134a in heat pump water heaters and moderately high temperature heat pumps
Mota-Babiloni, Adrián; Mateu-Royo, Carlos; Navarro-Esbrí, Joaquín; Barragán Cervera, Angel Elsevier (2021-09)Heat pumps are gaining interest to replace fossil fuel burners with the increase of the share of renewable sources in the electricity generation mix. Moreover, low global warming potential (GWP) alternatives offer a ... -
Experimental drop-in replacement of R404A for warm countries using the low GWP mixtures R454C and R455A
Mota-Babiloni, Adrián; Haro-Ortuño, Jorge; Navarro-Esbrí, Joaquín; Barragán Cervera, Angel Elsevier (2018-05)This article presents an analysis of the feasibility of R454C and R455A, two new low global warming potential (GWP of 148) refrigerants, in vapor compression refrigeration systems as alternatives to R404A for warm countries. ... -
Experimental evaluation of HCFO-1233zd-E as HFC-245fa replacement in an Organic Rankine Cycle system for low temperature heat sources
Moles, Fran; Navarro-Esbrí, Joaquín; Peris, Bernardo; Mota-Babiloni, Adrián Elsevier (2016-04-05)In this work an experimental evaluation of the working fluid HCFO-1233zd-E as HFC-245fa replacement in ORC systems for low temperature heat sources has been conducted. A fully monitored ORC module has been used to test ... -
Experimental evaluation of R448A as R404A lower-GWP alternative in refrigeration systems
Mota-Babiloni, Adrián; Navarro-Esbrí, Joaquín; Peris, Bernardo; Moles, Fran; Verdú, Gumersindo Elsevier (2015-11)Due to the adoption of EU Regulation No 517/2014, R404A is going to be banned in Europe in most of refrigeration applications, in which is typically used, due to its very high GWP value, 3943. In this paper an experimental ... -
Experimental evaluation of system modifications to increase R1234ze(E) cooling capacity
Mota-Babiloni, Adrián; Navarro-Esbrí, Joaquín; Mendoza-Miranda, Juan Manuel; Peris, Bernardo Elsevier (2017)The GWP limitations are being progressively introduced in Europe through Regulation EU No 517/201, phasing out R134a in most of its refrigeration and air conditioning applications. Pure hydrofluoroolefins are proposed to ...