Results 21 to 30 of about 1,638 (192)
IET Renewable Power Generation, Volume 17, Issue 16, Page 3741-3754, 7 December 2023., 2023 Low global warming potential (GWP) fluids were used to investigate strategies for reducing the effects of global warming and performance compared with hydro fluoro carbons (HFC) fluids. Four different combinations of the sCO2 cycle and ORC, including basic recuperated, pre‐compression, recompression with main compressor intercooling, and partial ...
Yunis Khan, Hakan Caliskan, Hiki Hong
wiley +1 more source
Condensazione di R1234yf in tubo "microfin" di diametro esterno 3 mm [PDF]
, 2022 Il presente lavoro di tesi nasce con lo scopo di studiare la condensazione di R1234yf all’interno di un minitubo alettato internamente di diametro esterno 3 mm analizzandone le prestazioni dal punto di vista dello scambio termico e delle perdite di ...
Bocchese, Matteo
core
Energy Sources and Thermal Management Technologies for Electric Vehicle Batteries: A Technical Review. [PDF]
Glob ChallOverview of Battery Thermal Management System (BTMS) methods, including air, liquid, cold plate, and hybrid cooling strategies—highlighting direct/indirect liquid techniques and hybrid integrations like PCM, refrigerant, and heat pipe systems. Abstract Efficient thermal management of high‐power lithium‐ion batteries (LiBs) is critical for ensuring ...
Rahman MA +6 more
europepmc +2 more sources
Fundamental equation of state for R1234yf
Journal of Physics: Conference Series, 2019 Abstract Unified fundamental equation of state for R1234yf has been developed that satisfies the scaling critical point theory. It has been demonstrated that the proposed equation of state truly represents the peculiarities of the thermodynamic surface from the qualitative and quantitative point of view: first, in the regular part of the
V A Rykov, S V Rykov, A V Sverdlov
openaire +1 more source
Energetic and exergetic performance comparison of an experimental automotive air conditioning system
Journal of Thermal Engineering, 2021 In this study, the energetic and exergetic performance merits of an automotive air condition-ing (AAC) system using R134a and R1234yf have been investigated.
Alpaslan ALKAN, Ahmet KOLIP, Murat HOSOZ
doaj +1 more source
Condensazione di R1234yf in un minitubo microalettato: analisi sperimentale e numerica [PDF]
, 2022 In questo lavoro di tesi è stato analizzato il processo di condensazione del fluido R1234yf in un minitubo microalettato di diametro interno 3.4 mm. Con simulazioni numeriche si è studiato il comportamento di un nuovo schema di sezione sperimentale. La
Parisotto, Francesco
core
Oil Retention and Pressure Drop of R134a, R1234yf and R410A with POE 100 in Suction Lines [PDF]
, 2012 An experimental investigation of oil retention and pressure drop characteristics for R1234yf, R134a and R410A with POE 100 is presented, for horizontal and vertical suction lines of 10.2 mm internal diameter.
Hrnjak, Predrag S. +1 more
core +1 more source
Zhileng xuebao, 2023 In heat pumps, the use of environmentally friendly refrigerants can reduce damage to the ozone layer. Under the condition of low ambient temperature, based on the existing heat pump system, the CO2 transcritical cycle and mechanical subcooling were ...
Zhang Ning +7 more
doaj
Journal of Engineering, 2019 Reducing global warming potential (GWP) of refrigerants is needed to the decrease of ozone-depleting of refrigeration systems leakages. Refrigerant R1234yf is now used to substitute R134a inside mobile air conditioning systems.
Rafah Hussain, Issam Mohammed ali
doaj +1 more source
Energies, 2022 With the increasing global requirements for environmental protection, refrigerants with ODP of 0 and low GWP are widely concerned and applied. In this paper, the CFD numerical method simulates the R134a centrifugal compressor directly replaced by R1234yf
Kexin Yi +5 more
doaj +1 more source