Results 51 to 60 of about 2,942 (221)
Asia-Pacific Journal of Chemical Engineering, Volume 21, Issue 1, January/February 2026.ABSTRACT This study investigates binary zeotropic mixtures of R744 (CO₂) blended with eco‐friendly refrigerants for medium‐high temperature heat pumps, comparing them with conventional R744/R134a systems. All mixtures meet 60–80 K temperature lift requirements under low‐temperature conditions. A genetic algorithm optimized system parameters using fixed
Lingling Sun +6 more
wiley +1 more source
Comparative study of heat transfer and pressure drop during flow boiling and flow condensation in minichannels [PDF]
, 2014 This paper was presented at the 4th Micro and Nano Flows Conference (MNF2014), which was held at University College, London, UK. The conference was organised by Brunel University and supported by the Italian Union of Thermofluiddynamics, IPEM, the ...
4th Micro and Nano Flows Conference (MNF2014) +4 more
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Working-Fluid replacement in supersonic organic Rankine Cycle Turbines [PDF]
, 2018 In this paper the effect of working-fluid replacement within an organic Rankine cycle turbine is investigated by evaluating the performance of two supersonic stators operating with different working fluids.
Markides, C., Sayma, A. I., White, M.
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Advanced Sustainable Systems, Volume 9, Issue 10, October 2025.A novel hydrogen‐based multi‐generation system integrates CAES, PEME, and ORC for climate‐responsive power generation. Using response surface methodology, the system is optimized for energy efficiency, emissions, and cost. Results highlight its strong performance in temperate climates and its potential for modular, scalable deployment.
Ehsanolah Assareh +5 more
wiley +1 more source
Thermodynamic modelling and analysis of a solar organic Rankine cycle employing thermofluids [PDF]
, 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
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Advanced Sensor Research, Volume 4, Issue 9, September 2025.Due to the synergistic effect of improved catalytic decomposition mechanism and Schottky‐barrier effect, the Pd‐γ‐Al2O3/SnO2 sensor exhibits outstanding response, good stability, selectivity, repeatability, and universality in sensing different Freon gases, which demonstrates its potential for use in Freon refrigeration leakage detection.
Jiahong Wen +7 more
wiley +1 more source
Hittite Journal of Science and Engineering, 2017 I n this paper, the effects of internal heat exchanger IHX effectiveness on the performance parameters of the refrigeration cycle with R1234yf were theoretically investigated.
Mehmet Direk +2 more
doaj +1 more source
Journal of Mechanical Engineering, 2021 The Kyoto protocol emphasized the need of replacement of HFC refrigerant due to their high GWP values that causes pollution in the environment. So in this paper the refrigerants R1234yf, R152a and HFOs/HFCs mixtures of R134a/R152a/R1234yf such as ARM42 ...
Hasheer Shaik Mohammad +2 more
doaj +1 more source
Energies, 2022 The Organic Rankine Cycle (ORC) is commonly accepted as a viable technology to convert from low to medium temperature geothermal energy into electrical energy.
Nenad Mustapić +3 more
doaj +1 more source
Experimental assessment of R134a and its lower GWP alternative R513A [PDF]
, 2017 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.
Khodabandeh, Rahmatollah +3 more
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