Results 41 to 50 of about 2,030 (213)

Feasibility of Using 2,3,3,3-Tetrafluoropropene (R1234yf) as a Solvent for Solid–Liquid Extraction of Biopharmaceuticals [PDF]

open access: yes, 2003
Tetrafluoropropene (R1234yf) is the most likely replacement for tetrafluoroethane (R134a), a widely used refrigerant, propellant and solvent, characterised by very high global warming potential.
Suberu, J   +4 more
core   +5 more sources

Effect of Tube Expansion on Heat Transfer and Pressure Drop Characteristics During Condensation in Micro-Fin Tubes

open access: yesFrontiers in Energy Research, 2021
Despite of the large number of research dedicated to condensation heat transfer and pressure drop characteristics in pristine micro-fin tubes, experimental investigation on effects of tube expansion have not been reported in the open literature.
Na Liu, Qian Zhao, Zhixiang Lan
doaj   +1 more source

System and component modelling and optimisation for an efficient 10 kWe low-temperature organic Rankine cycle utilising a radial inflow expander [PDF]

open access: yes, 2015
Small-scale (10 kWe) organic Rankine cycles for low temperature applications such as heat recovery and solar power present a significant development opportunity but limited prototypes have been developed.
Sayma, A. I., White, M.
core   +1 more source

A Novel Generator Design Utilised for Conventional Ejector Refrigeration Systems

open access: yesEnergies, 2021
Ejector refrigeration systems are rapidly evolving and are poised to become one of the most preferred cooling systems in the near future. CO2 transcritical refrigeration systems have inherently high working pressures and discharge temperatures, providing
Anas F. A. Elbarghthi   +2 more
doaj   +1 more source

Thermodynamic modelling and analysis of a solar organic Rankine cycle employing thermofluids [PDF]

open access: yes, 2017
This paper presents thermodynamic modelling and simulation study of a small scale saturated solar organic Rankine cycle (ORC) which consists of a stationary, flat plate solar energy collector that is utilised as a vapour generator, a vane expander, a ...
Helvaci, H.U., Khan, Zulfiqar Ahmad
core   +1 more source

R1234ze(E) Flow Boiling inside a 2.5 mm ID Smooth Tube and Comparison against an Equivalent Microfin Tube

open access: yesApplied Sciences, 2021
The air conditioning and refrigeration industry is now dealing with an imminent substitution of widely implemented refrigerants having a non-negligible global warming impact.
Andrea Diani, Luisa Rossetto
doaj   +1 more source

Candidate eco-friendly gas mixtures for MPGDs [PDF]

open access: yes, 2018
Modern gas detectors for detection of particles require F-based gases for optimal performance.Recent regulations demand the use of environmentally unfriendly F-based gases t o be limited or banned. This review studies properties of potential eco-friendly
Ban, Y.   +14 more
core   +1 more source

HFO1234ze(e) As an Alternative Refrigerant for Ejector Cooling Technology

open access: yesEnergies, 2019
The paper presented a mathematical assessment of selected refrigerants for the ejector cooling purpose. R1234ze(e) and R1234yf are the well-known refrigerants of hydrofluoroolefins (HFOs), the fourth-generation halocarbon refrigerants.
Van Vu Nguyen   +2 more
doaj   +1 more source

CFD Based Design for Ejector Cooling System Using HFOS (1234ze(E) and 1234yf)

open access: yesEnergies, 2020
The field of computational fluid dynamics has been rekindled by recent researchers to unleash this powerful tool to predict the ejector design, as well as to analyse and improve its performance.
Anas F A Elbarghthi   +3 more
doaj   +1 more source

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