Listar Departament: Enginyeria Mecànica i Construcció por autoría "09c8f899-d843-4a5c-bc99-3910cc3f052b"
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A novel method to measure the energy efficiency and performance of an auto-cascade refrigeration cycle
Llopis, Rodrigo; Martínez Ángeles, Manel; García-Valero, Marc Elsevier (2023-10)Auto-cascade refrigeration systems are the most used cycles to maintain spaces at ultra-low temperature conditions (-80 to −60 °C). The interest in these systems has risen due to the need to maintain and distribute COVID-19 ... -
Energy performance assessment of an auto-cascade cycle for ultra-low temperatures with the pair R1150 - R600a
Llopis, Rodrigo; Martínez Ángeles, Manel; Calleja-Anta, Daniel; Nebot-Andres, Laura Elsevier (2024-03-01) -
Evaluation of CO2-doped blends in single-stage with IHX and parallel compression refrigeration architectures
Martínez Ángeles, Manel; Sicco, Estefanía; Toffoletti, Gabriele; Nebot-Andres, Laura; Sánchez García-Vacas, Daniel; Cabello López, Ramón; CORTELLA, Giovanni; Llopis, Rodrigo Elsevier (2023-07)CO2 is the standard for medium to large-sized commercial applications, as it combines security and low environmental impact. However, it requires the use of advanced and complex cycles. Recently, CO2-doping (the addition ... -
Evaluation of zerotropic mixtures as refrigerants in a dedicated subcooling system of a CO2 refrigeration plant
Toffoletti, Gabriele; Nebot Andrés, Laura; Martínez Ángeles, Manel; CORTELLA, Giovanni; Llopis, Rodrigo Universidad Politécnica de Cartagena (2022)Prof. Baomin Dai suggested in 2018 that the use of zeotropic mixtures with high glide could provide energy improvements as refrigerants in dedicated mechanical subcooling systems for CO2 plants due to matching of temperature ... -
Experimental assessment of CO2/R-152a mixtures in a refrigeration plant with integrated mechanical subcooling
Martínez Ángeles, Manel; Nebot-Andres, Laura; Calleja-Anta, Daniel; Llopis, Rodrigo Science Direct (2024-02-01)During the last years, CO2 utilization has grown in the refrigeration sector, especially in medium and large size plants. These cycles have implemented complex architectures to improve their energetic performance and be ... -
Experimental evaluation of CO2/R-152a mixtures in arefrigeration plant with and without IHX
Sicco, Estefanía; Martínez Ángeles, Manel; Toffoletti, G.; Nebot-Andres, Laura; Sánchez García-Vacas, Daniel; Cabello López, Ramón; CORTELLA, Giovanni; Llopis, Rodrigo Elsevier Ltd (2024-03-01)In recent years, CO2-based mixtures have been considered as a way to improve the performance of refrigerating plants using pure CO2 as refrigerant. Combining CO2 with a fluid with higher critical temperature generates a ... -
Mejora energética de sistemas de subenfriamiento mecánico en plantas de refrigeración con CO2
Nebot Andrés, Laura; Calleja-Anta, Daniel; Sánchez García-Vacas, Daniel; Cabello López, Ramón; Martínez Ángeles, Manel; Llopis, Rodrigo Universidad Politécnica de Cartagena (2022)El subenfriamiento se está popularizando en los últimos años como solución de mejora energética de los sistemas de refrigeración con CO2. En concreto, los sistemas de subenfriamiento mecánico muestran un potencial de mejora ... -
Optimizing R152a/R600 and R290/R600 mixtures for superior energy performance in vapor compression systems: Promising alternatives to Isobutane (R600a)
Calleja-Anta, Daniel; Martínez Ángeles, Manel; Nebot-Andres, Laura; Sánchez, Daniel; Llopis, Rodrigo Elsevier (2024-06-15)This study presents an experimental investigation into the optimal composition of R152a/R600 and R290/R600 mixtures as potential alternatives to isobutane (R600a) in a single-stage vapor compression cycle. The research ...